WIP - move AI suggestions

.env.api

@@ -2,8 +2,12 @@ NODE_ENV=development
 PORT=3000
 
 DATABASE_URL="mysql://platform:platform@db:3306/platform"
+CENTRAL_DATABASE_URL="mysql://root:asjdnfqTash37faggT@db:3306/central_platform"
 REDIS_URL="redis://redis:6379"
 
 # JWT, multi-tenant hints, etc.
 JWT_SECRET="devsecret"
 TENANCY_STRATEGY="single-db"
+
+
+CENTRAL_SUBDOMAINS="central,admin"

.env.web

@@ -2,4 +2,4 @@ NUXT_PORT=3001
 NUXT_HOST=0.0.0.0
 
 # Point Nuxt to the API container (not localhost)
-NUXT_PUBLIC_API_BASE_URL=http://jupiter.routebox.co:3000
+NUXT_PUBLIC_API_BASE_URL=https://tenant1.routebox.co

DEBUG_INCOMING_CALL.md

@@ -0,0 +1,83 @@
+# Debugging Incoming Call Issue
+
+## Current Problem
+- Hear "Connecting to your call" message (TwiML is executing)
+- No ring on mobile after "Connecting" message
+- Click Accept button does nothing
+- Call never connects
+
+## Root Cause Hypothesis
+The Twilio Device SDK is likely **NOT receiving the incoming call event** from Twilio's Signaling Server. This could be because:
+
+1. **Identity Mismatch**: The Device's identity (from JWT token) doesn't match the `<Client>ID</Client>` in TwiML
+2. **Device Not Registered**: Device registration isn't completing before the call arrives
+3. **Twilio Signaling Issue**: Device isn't connected to Twilio Signaling Server
+
+## How to Debug
+
+### Step 1: Check Device Identity in Console
+When you open the softphone dialog, **open Browser DevTools Console (F12)**
+
+You should see logs like:
+```
+Token received, creating Device...
+Token identity: e6d45fa3-a108-4085-81e5-a8e05e85e6fb
+Token grants: {voice: {...}}
+Registering Twilio Device...
+✓ Twilio Device registered - ready to receive calls
+Device identity: e6d45fa3-a108-4085-81e5-a8e05e85e6fb
+Device state: ready
+```
+
+**Note the Device identity value** - e.g., "e6d45fa3-a108-4085-81e5-a8e05e85e6fb"
+
+### Step 2: Check Backend Logs
+When you make an inbound call, look for backend logs showing:
+
+```
+╔════════════════════════════════════════╗
+║ === INBOUND CALL RECEIVED ===
+╚════════════════════════════════════════╝
+...
+Client IDs to dial: e6d45fa3-a108-4085-81e5-a8e05e85e6fb
+First Client ID format check: "e6d45fa3-a108-4085-81e5-a8e05e85e6fb" (length: 36)
+```
+
+### Step 3: Compare Identities
+The Device identity from frontend console MUST MATCH the Client ID from backend logs.
+
+**If they match**: The issue is with Twilio Signaling or Device SDK configuration
+**If they don't match**: We found the bug - identity mismatch
+
+### Step 4: Monitor Incoming Event
+When you make the inbound call, keep watching the browser console for:
+
+```
+🔔 Twilio Device INCOMING event received: {...}
+```
+
+**If this appears**: The Device SDK IS receiving the call, so the Accept button issue is frontend
+**If this doesn't appear**: The Device SDK is NOT receiving the call, so it's an identity/registration issue
+
+## What Changed
+- Frontend now relies on **Twilio Device SDK `incoming` event** (not Socket.IO) for showing incoming call
+- Added comprehensive logging to Device initialization
+- Added logging to Accept button handler
+- Backend logs Device ID format for comparison
+
+## Next Steps
+
+1. Make an inbound call
+2. Check browser console for the 5 logs above
+3. Check backend logs for Client ID
+4. Look for "🔔 Twilio Device INCOMING event" in browser console
+5. Try clicking Accept and watch console for "📞 Accepting call" logs
+6. Report back with:
+   - Device identity from console
+   - Client ID from backend logs
+   - Whether "🔔 Twilio Device INCOMING event" appears
+   - Whether any accept logs appear
+
+## Important Files
+- Backend: `/backend/src/voice/voice.controller.ts` (lines 205-210 show Client ID logging)
+- Frontend: `/frontend/composables/useSoftphone.ts` (Device initialization and incoming handler)

SOFTPHONE_AI_ASSISTANT.md

@@ -0,0 +1,173 @@
+# Softphone AI Assistant - Complete Implementation
+
+## 🎉 Features Implemented
+
+### ✅ Real-time AI Call Assistant
+- **OpenAI Realtime API Integration** - Listens to live calls and provides suggestions
+- **Audio Streaming** - Twilio Media Streams fork audio to backend for AI processing
+- **Real-time Transcription** - Speech-to-text during calls
+- **Smart Suggestions** - AI analyzes conversation and advises the agent
+
+## 🔧 Architecture
+
+### Backend Flow
+```
+Inbound Call → TwiML (<Start><Stream> + <Dial>) 
+→ Media Stream WebSocket → OpenAI Realtime API 
+→ AI Processing → Socket.IO → Frontend
+```
+
+### Key Components
+
+1. **TwiML Structure** (`voice.controller.ts:226-234`)
+   - `<Start><Stream>` - Forks audio for AI processing
+   - `<Dial><Client>` - Connects call to agent's softphone
+
+2. **OpenAI Integration** (`voice.service.ts:431-519`)
+   - WebSocket connection to `wss://api.openai.com/v1/realtime?model=gpt-4o-realtime-preview-2024-10-01`
+   - Session config with custom instructions for agent assistance
+   - Handles transcripts and generates suggestions
+
+3. **AI Message Handler** (`voice.service.ts:609-707`)
+   - Processes OpenAI events (transcripts, suggestions, audio)
+   - Routes suggestions to frontend via Socket.IO
+   - Saves transcripts to database
+
+4. **Voice Gateway** (`voice.gateway.ts:272-289`)
+   - `notifyAiTranscript()` - Real-time transcript chunks
+   - `notifyAiSuggestion()` - AI suggestions to agent
+
+### Frontend Components
+
+1. **Softphone Dialog** (`SoftphoneDialog.vue:104-135`)
+   - AI Assistant section with badge showing suggestion count
+   - Color-coded suggestions (blue=response, green=action, purple=insight)
+   - Animated highlight for newest suggestion
+
+2. **Softphone Composable** (`useSoftphone.ts:515-535`)
+   - Socket.IO event handlers for `ai:suggestion` and `ai:transcript`
+   - Maintains history of last 10 suggestions
+   - Maintains history of last 50 transcript items
+
+## 📋 AI Prompt Configuration
+
+The AI is instructed to:
+- **Listen, not talk** - It advises the agent, not the caller
+- **Provide concise suggestions** - 1-2 sentences max
+- **Use formatted output**:
+  - `💡 Suggestion: [advice]`
+  - `⚠️ Alert: [important notice]`
+  - `📋 Action: [CRM action]`
+
+## 🎨 UI Features
+
+### Suggestion Types
+- **Response** (Blue) - Suggested replies or approaches
+- **Action** (Green) - Recommended CRM actions
+- **Insight** (Purple) - Important alerts or observations
+
+### Visual Feedback
+- Badge showing number of suggestions
+- Newest suggestion pulses for attention
+- Auto-scrolling suggestion list
+- Timestamp on each suggestion
+
+## 🔍 How to Monitor
+
+### 1. Backend Logs
+```bash
+# Watch for AI events
+docker logs -f neo-backend-1 | grep -E "AI|OpenAI|transcript|suggestion"
+```
+
+Key log markers:
+- `📝 Transcript chunk:` - Real-time speech detection
+- `✅ Final transcript:` - Complete transcript saved
+- `💡 AI Suggestion:` - AI-generated advice
+
+### 2. Database
+```sql
+-- View call transcripts
+SELECT call_sid, ai_transcript, created_at 
+FROM calls 
+ORDER BY created_at DESC 
+LIMIT 5;
+```
+
+### 3. Frontend Console
+- Open browser DevTools Console
+- Watch for: "AI suggestion:", "AI transcript:"
+
+## 🚀 Testing
+
+1. **Make a test call** to your Twilio number
+2. **Accept the call** in the softphone dialog
+3. **Talk during the call** - Say something like "I need to schedule a follow-up"
+4. **Watch the UI** - AI suggestions appear in real-time
+5. **Check logs** - See transcription and suggestion generation
+
+## 📊 Current Status
+
+✅ **Working**:
+- Inbound calls ring softphone
+- Media stream forks audio to backend
+- OpenAI processes audio (1300+ packets/call)
+- AI generates suggestions
+- Suggestions appear in frontend
+- Transcripts saved to database
+
+## 🔧 Configuration
+
+### Required Environment Variables
+```env
+# OpenAI API Key (set in tenant integrations config)
+OPENAI_API_KEY=sk-...
+
+# Optional overrides
+OPENAI_MODEL=gpt-4o-realtime-preview-2024-10-01
+OPENAI_VOICE=alloy
+```
+
+### Tenant Configuration
+Set in Settings > Integrations:
+- OpenAI API Key
+- Model (optional)
+- Voice (optional)
+
+## 🎯 Next Steps (Optional Enhancements)
+
+1. **CRM Tool Execution** - Implement actual tool calls (search contacts, create tasks)
+2. **Audio Response** - Send OpenAI audio back to caller (two-way AI interaction)
+3. **Sentiment Analysis** - Track call sentiment in real-time
+4. **Call Summary** - Generate post-call summary automatically
+5. **Custom Prompts** - Allow agents to customize AI instructions per call type
+
+## 🐛 Troubleshooting
+
+### No suggestions appearing?
+1. Check OpenAI API key is configured
+2. Verify WebSocket connection logs show "OpenAI Realtime connected"
+3. Check frontend Socket.IO connection is established
+4. Verify user ID matches between backend and frontend
+
+### Transcripts not saving?
+1. Check tenant database connection
+2. Verify `calls` table has `ai_transcript` column
+3. Check logs for "Failed to update transcript" errors
+
+### OpenAI connection fails?
+1. Verify API key is valid
+2. Check model name is correct
+3. Review WebSocket close codes in logs
+
+## 📝 Files Modified
+
+**Backend:**
+- `/backend/src/voice/voice.service.ts` - OpenAI integration & AI message handling
+- `/backend/src/voice/voice.controller.ts` - TwiML generation with stream fork
+- `/backend/src/voice/voice.gateway.ts` - Socket.IO event emission
+- `/backend/src/main.ts` - Media stream WebSocket handler
+
+**Frontend:**
+- `/frontend/components/SoftphoneDialog.vue` - AI suggestions UI
+- `/frontend/composables/useSoftphone.ts` - Socket.IO event handlers

backend/.env.example

@@ -0,0 +1,23 @@
+# Central Database (Prisma - stores tenant metadata)
+CENTRAL_DATABASE_URL="mysql://user:password@platform-db:3306/central_platform"
+
+# Database Root Credentials (for tenant provisioning)
+DB_HOST="platform-db"
+DB_PORT="3306"
+DB_ROOT_USER="root"
+DB_ROOT_PASSWORD="root"
+
+# Encryption Key for Tenant Database Passwords (32-byte hex string)
+# Generate with: node -e "console.log(require('crypto').randomBytes(32).toString('hex'))"
+ENCRYPTION_KEY="your-32-byte-hex-encryption-key-here"
+
+# JWT Configuration
+JWT_SECRET="your-jwt-secret"
+JWT_EXPIRES_IN="7d"
+
+# Application
+NODE_ENV="development"
+PORT="3000"
+
+# Central Admin Subdomains (comma-separated list of subdomains that access the central database)
+CENTRAL_SUBDOMAINS="central,admin"

backend/MIGRATION_QUICK_REFERENCE.txt

@@ -0,0 +1,91 @@
+╔══════════════════════════════════════════════════════════════════════╗
+║                  TENANT MIGRATION - QUICK REFERENCE                   ║
+╚══════════════════════════════════════════════════════════════════════╝
+
+📍 LOCATION: /root/neo/backend
+
+┌─────────────────────────────────────────────────────────────────────┐
+│ COMMON COMMANDS                                                      │
+└─────────────────────────────────────────────────────────────────────┘
+
+  Create Migration:
+    $ npm run migrate:make add_my_feature
+  
+  Check Status:
+    $ npm run migrate:status
+  
+  Test on One Tenant:
+    $ npm run migrate:tenant acme-corp
+  
+  Apply to All Tenants:
+    $ npm run migrate:all-tenants
+
+
+┌─────────────────────────────────────────────────────────────────────┐
+│ ALL AVAILABLE COMMANDS                                              │
+└─────────────────────────────────────────────────────────────────────┘
+
+  npm run migrate:make <name>       Create new migration file
+  npm run migrate:status             Check status across all tenants
+  npm run migrate:tenant <slug>      Migrate specific tenant
+  npm run migrate:all-tenants        Migrate all active tenants
+  npm run migrate:latest             Migrate default DB (rarely used)
+  npm run migrate:rollback           Rollback default DB (rarely used)
+
+
+┌─────────────────────────────────────────────────────────────────────┐
+│ TYPICAL WORKFLOW                                                    │
+└─────────────────────────────────────────────────────────────────────┘
+
+  1. Create:    npm run migrate:make add_priority_field
+  2. Edit:      vim migrations/tenant/20250127_*.js
+  3. Test:      npm run migrate:tenant test-company
+  4. Status:    npm run migrate:status
+  5. Deploy:    npm run migrate:all-tenants
+
+
+┌─────────────────────────────────────────────────────────────────────┐
+│ ENVIRONMENT REQUIRED                                                │
+└─────────────────────────────────────────────────────────────────────┘
+
+  export DB_ENCRYPTION_KEY="your-32-character-secret-key!!"
+
+
+┌─────────────────────────────────────────────────────────────────────┐
+│ FILE LOCATIONS                                                      │
+└─────────────────────────────────────────────────────────────────────┘
+
+  Scripts:       backend/scripts/migrate-*.ts
+  Migrations:    backend/migrations/tenant/
+  Config:        backend/knexfile.js
+  Docs:          TENANT_MIGRATION_GUIDE.md
+
+
+┌─────────────────────────────────────────────────────────────────────┐
+│ DOCUMENTATION                                                       │
+└─────────────────────────────────────────────────────────────────────┘
+
+  Quick Guide:   cat TENANT_MIGRATION_GUIDE.md
+  Script Docs:   cat backend/scripts/README.md
+  Complete:      cat TENANT_MIGRATION_IMPLEMENTATION_COMPLETE.md
+
+
+┌─────────────────────────────────────────────────────────────────────┐
+│ TROUBLESHOOTING                                                     │
+└─────────────────────────────────────────────────────────────────────┘
+
+  Missing Prisma Client:
+    $ npx prisma generate --schema=prisma/schema-central.prisma
+  
+  Check Scripts Available:
+    $ npm run | grep migrate
+  
+  Connection Error:
+    - Check DB_ENCRYPTION_KEY matches encryption key
+    - Verify central database is accessible
+    - Ensure tenant databases are online
+
+
+╔══════════════════════════════════════════════════════════════════════╗
+║  For detailed help: cat TENANT_MIGRATION_GUIDE.md                    ║
+╚══════════════════════════════════════════════════════════════════════╝

backend/knexfile.js

@@ -0,0 +1,19 @@
+module.exports = {
+  development: {
+    client: 'mysql2',
+    connection: {
+      host: process.env.DB_HOST || 'localhost',
+      port: parseInt(process.env.DB_PORT) || 3306,
+      user: process.env.DB_USER || 'root',
+      password: process.env.DB_PASSWORD || 'root',
+      database: process.env.DB_NAME || 'tenant_template',
+    },
+    migrations: {
+      directory: './migrations/tenant',
+      tableName: 'knex_migrations',
+    },
+    seeds: {
+      directory: './seeds/tenant',
+    },
+  },
+};

backend/migrations/tenant/20250126000001_create_users_and_rbac.js

@@ -0,0 +1,78 @@
+exports.up = function (knex) {
+  return knex.schema
+    .createTable('users', (table) => {
+      table.uuid('id').primary().defaultTo(knex.raw('(UUID())'));
+      table.string('email', 255).notNullable();
+      table.string('password', 255).notNullable();
+      table.string('firstName', 255);
+      table.string('lastName', 255);
+      table.boolean('isActive').defaultTo(true);
+      table.timestamps(true, true);
+
+      table.unique(['email']);
+      table.index(['email']);
+    })
+    .createTable('roles', (table) => {
+      table.uuid('id').primary().defaultTo(knex.raw('(UUID())'));
+      table.string('name', 255).notNullable();
+      table.string('guardName', 255).defaultTo('api');
+      table.text('description');
+      table.timestamps(true, true);
+
+      table.unique(['name', 'guardName']);
+    })
+    .createTable('permissions', (table) => {
+      table.uuid('id').primary().defaultTo(knex.raw('(UUID())'));
+      table.string('name', 255).notNullable();
+      table.string('guardName', 255).defaultTo('api');
+      table.text('description');
+      table.timestamps(true, true);
+
+      table.unique(['name', 'guardName']);
+    })
+    .createTable('role_permissions', (table) => {
+      table.uuid('id').primary().defaultTo(knex.raw('(UUID())'));
+      table.uuid('roleId').notNullable();
+      table.uuid('permissionId').notNullable();
+      table.timestamps(true, true);
+
+      table
+        .foreign('roleId')
+        .references('id')
+        .inTable('roles')
+        .onDelete('CASCADE');
+      table
+        .foreign('permissionId')
+        .references('id')
+        .inTable('permissions')
+        .onDelete('CASCADE');
+      table.unique(['roleId', 'permissionId']);
+    })
+    .createTable('user_roles', (table) => {
+      table.uuid('id').primary().defaultTo(knex.raw('(UUID())'));
+      table.uuid('userId').notNullable();
+      table.uuid('roleId').notNullable();
+      table.timestamps(true, true);
+
+      table
+        .foreign('userId')
+        .references('id')
+        .inTable('users')
+        .onDelete('CASCADE');
+      table
+        .foreign('roleId')
+        .references('id')
+        .inTable('roles')
+        .onDelete('CASCADE');
+      table.unique(['userId', 'roleId']);
+    });
+};
+
+exports.down = function (knex) {
+  return knex.schema
+    .dropTableIfExists('user_roles')
+    .dropTableIfExists('role_permissions')
+    .dropTableIfExists('permissions')
+    .dropTableIfExists('roles')
+    .dropTableIfExists('users');
+};

backend/migrations/tenant/20250126000002_create_object_definitions.js

@@ -0,0 +1,48 @@
+exports.up = function (knex) {
+  return knex.schema
+    .createTable('object_definitions', (table) => {
+      table.uuid('id').primary().defaultTo(knex.raw('(UUID())'));
+      table.string('apiName', 255).notNullable().unique();
+      table.string('label', 255).notNullable();
+      table.string('pluralLabel', 255);
+      table.text('description');
+      table.boolean('isSystem').defaultTo(false);
+      table.boolean('isCustom').defaultTo(true);
+      table.timestamps(true, true);
+
+      table.index(['apiName']);
+    })
+    .createTable('field_definitions', (table) => {
+      table.uuid('id').primary().defaultTo(knex.raw('(UUID())'));
+      table.uuid('objectDefinitionId').notNullable();
+      table.string('apiName', 255).notNullable();
+      table.string('label', 255).notNullable();
+      table.string('type', 50).notNullable(); // String, Number, Date, Boolean, Reference, etc.
+      table.integer('length');
+      table.integer('precision');
+      table.integer('scale');
+      table.string('referenceObject', 255);
+      table.text('defaultValue');
+      table.text('description');
+      table.boolean('isRequired').defaultTo(false);
+      table.boolean('isUnique').defaultTo(false);
+      table.boolean('isSystem').defaultTo(false);
+      table.boolean('isCustom').defaultTo(true);
+      table.integer('displayOrder').defaultTo(0);
+      table.timestamps(true, true);
+
+      table
+        .foreign('objectDefinitionId')
+        .references('id')
+        .inTable('object_definitions')
+        .onDelete('CASCADE');
+      table.unique(['objectDefinitionId', 'apiName']);
+      table.index(['objectDefinitionId']);
+    });
+};
+
+exports.down = function (knex) {
+  return knex.schema
+    .dropTableIfExists('field_definitions')
+    .dropTableIfExists('object_definitions');
+};

backend/migrations/tenant/20250126000003_create_apps.js

@@ -0,0 +1,35 @@
+exports.up = function (knex) {
+  return knex.schema
+    .createTable('apps', (table) => {
+      table.uuid('id').primary().defaultTo(knex.raw('(UUID())'));
+      table.string('slug', 255).notNullable().unique();
+      table.string('label', 255).notNullable();
+      table.text('description');
+      table.integer('display_order').defaultTo(0);
+      table.timestamps(true, true);
+
+      table.index(['slug']);
+    })
+    .createTable('app_pages', (table) => {
+      table.uuid('id').primary().defaultTo(knex.raw('(UUID())'));
+      table.uuid('app_id').notNullable();
+      table.string('slug', 255).notNullable();
+      table.string('label', 255).notNullable();
+      table.string('type', 50).notNullable(); // List, Detail, Custom
+      table.string('object_api_name', 255);
+      table.integer('display_order').defaultTo(0);
+      table.timestamps(true, true);
+
+      table
+        .foreign('app_id')
+        .references('id')
+        .inTable('apps')
+        .onDelete('CASCADE');
+      table.unique(['app_id', 'slug']);
+      table.index(['app_id']);
+    });
+};
+
+exports.down = function (knex) {
+  return knex.schema.dropTableIfExists('app_pages').dropTableIfExists('apps');
+};

backend/migrations/tenant/20250126000003_create_custom_migrations.js

@@ -0,0 +1,29 @@
+exports.up = function (knex) {
+  return knex.schema.createTable('custom_migrations', (table) => {
+    table.uuid('id').primary().defaultTo(knex.raw('(UUID())'));
+    table.uuid('tenantId').notNullable();
+    table.string('name', 255).notNullable();
+    table.text('description');
+    table.enum('type', [
+      'create_table',
+      'add_column',
+      'alter_column',
+      'add_index',
+      'drop_table',
+      'custom',
+    ]).notNullable();
+    table.text('sql').notNullable();
+    table.enum('status', ['pending', 'executed', 'failed']).defaultTo('pending');
+    table.timestamp('executedAt').nullable();
+    table.text('error').nullable();
+    table.timestamps(true, true);
+
+    table.index(['tenantId']);
+    table.index(['status']);
+    table.index(['created_at']);
+  });
+};
+
+exports.down = function (knex) {
+  return knex.schema.dropTableIfExists('custom_migrations');
+};

backend/migrations/tenant/20250126000004_create_standard_objects.js

@@ -0,0 +1,111 @@
+exports.up = async function (knex) {
+  // Create standard Account object
+  await knex.schema.createTable('accounts', (table) => {
+    table.uuid('id').primary().defaultTo(knex.raw('(UUID())'));
+    table.string('name', 255).notNullable();
+    table.string('website', 255);
+    table.string('phone', 50);
+    table.string('industry', 100);
+    table.uuid('ownerId');
+    table.timestamps(true, true);
+
+    table
+      .foreign('ownerId')
+      .references('id')
+      .inTable('users')
+      .onDelete('SET NULL');
+    table.index(['name']);
+    table.index(['ownerId']);
+  });
+
+  // Insert Account object definition
+  const [objectId] = await knex('object_definitions').insert({
+    id: knex.raw('(UUID())'),
+    apiName: 'Account',
+    label: 'Account',
+    pluralLabel: 'Accounts',
+    description: 'Standard Account object',
+    isSystem: true,
+    isCustom: false,
+    created_at: knex.fn.now(),
+    updated_at: knex.fn.now(),
+  });
+
+  // Insert Account field definitions
+  const objectDefId =
+    objectId ||
+    (await knex('object_definitions').where('apiName', 'Account').first()).id;
+
+  await knex('field_definitions').insert([
+    {
+      id: knex.raw('(UUID())'),
+      objectDefinitionId: objectDefId,
+      apiName: 'name',
+      label: 'Account Name',
+      type: 'String',
+      length: 255,
+      isRequired: true,
+      isSystem: true,
+      isCustom: false,
+      displayOrder: 1,
+      created_at: knex.fn.now(),
+      updated_at: knex.fn.now(),
+    },
+    {
+      id: knex.raw('(UUID())'),
+      objectDefinitionId: objectDefId,
+      apiName: 'website',
+      label: 'Website',
+      type: 'String',
+      length: 255,
+      isSystem: true,
+      isCustom: false,
+      displayOrder: 2,
+      created_at: knex.fn.now(),
+      updated_at: knex.fn.now(),
+    },
+    {
+      id: knex.raw('(UUID())'),
+      objectDefinitionId: objectDefId,
+      apiName: 'phone',
+      label: 'Phone',
+      type: 'String',
+      length: 50,
+      isSystem: true,
+      isCustom: false,
+      displayOrder: 3,
+      created_at: knex.fn.now(),
+      updated_at: knex.fn.now(),
+    },
+    {
+      id: knex.raw('(UUID())'),
+      objectDefinitionId: objectDefId,
+      apiName: 'industry',
+      label: 'Industry',
+      type: 'String',
+      length: 100,
+      isSystem: true,
+      isCustom: false,
+      displayOrder: 4,
+      created_at: knex.fn.now(),
+      updated_at: knex.fn.now(),
+    },
+    {
+      id: knex.raw('(UUID())'),
+      objectDefinitionId: objectDefId,
+      apiName: 'ownerId',
+      label: 'Owner',
+      type: 'Reference',
+      referenceObject: 'User',
+      isSystem: true,
+      isCustom: false,
+      displayOrder: 5,
+      created_at: knex.fn.now(),
+      updated_at: knex.fn.now(),
+    },
+  ]);
+};
+
+exports.down = function (knex) {
+  return knex.schema.dropTableIfExists('accounts');
+};

backend/migrations/tenant/20250126000005_add_ui_metadata_to_fields.js

@@ -0,0 +1,19 @@
+/**
+ * @param { import("knex").Knex } knex
+ * @returns { Promise<void> }
+ */
+exports.up = function(knex) {
+  return knex.schema.table('field_definitions', (table) => {
+    table.jsonb('ui_metadata').nullable().comment('JSON metadata for UI rendering including display options, validation rules, and field-specific configurations');
+  });
+};
+
+/**
+ * @param { import("knex").Knex } knex
+ * @returns { Promise<void> }
+ */
+exports.down = function(knex) {
+  return knex.schema.table('field_definitions', (table) => {
+    table.dropColumn('ui_metadata');
+  });
+};

backend/migrations/tenant/20250126000006_add_name_field_to_objects.js

@@ -0,0 +1,11 @@
+exports.up = function (knex) {
+  return knex.schema.table('object_definitions', (table) => {
+    table.string('nameField', 255).comment('API name of the field to use as record display name');
+  });
+};
+
+exports.down = function (knex) {
+  return knex.schema.table('object_definitions', (table) => {
+    table.dropColumn('nameField');
+  });
+};

backend/migrations/tenant/20250126000007_add_app_id_to_objects.js

@@ -0,0 +1,22 @@
+exports.up = function (knex) {
+  return knex.schema.table('object_definitions', (table) => {
+    table.uuid('app_id').nullable()
+      .comment('Optional: App that this object belongs to');
+    
+    table
+      .foreign('app_id')
+      .references('id')
+      .inTable('apps')
+      .onDelete('SET NULL');
+    
+    table.index(['app_id']);
+  });
+};
+
+exports.down = function (knex) {
+  return knex.schema.table('object_definitions', (table) => {
+    table.dropForeign('app_id');
+    table.dropIndex('app_id');
+    table.dropColumn('app_id');
+  });
+};

backend/migrations/tenant/20250126000008_create_page_layouts.js

@@ -0,0 +1,29 @@
+/**
+ * @param { import("knex").Knex } knex
+ * @returns { Promise<void> }
+ */
+exports.up = function(knex) {
+  return knex.schema.createTable('page_layouts', (table) => {
+    table.uuid('id').primary().defaultTo(knex.raw('(UUID())'));
+    table.string('name').notNullable();
+    table.uuid('object_id').notNullable();
+    table.boolean('is_default').defaultTo(false);
+    table.json('layout_config').notNullable();
+    table.text('description');
+    table.timestamps(true, true);
+
+    // Foreign key to object_definitions
+    table.foreign('object_id').references('id').inTable('object_definitions').onDelete('CASCADE');
+
+    // Index for faster lookups
+    table.index(['object_id', 'is_default']);
+  });
+};
+
+/**
+ * @param { import("knex").Knex } knex
+ * @returns { Promise<void> }
+ */
+exports.down = function(knex) {
+  return knex.schema.dropTable('page_layouts');
+};

backend/migrations/tenant/20250129000001_add_authorization_system.js

@@ -0,0 +1,103 @@
+exports.up = function (knex) {
+  return knex.schema
+    // Add orgWideDefault to object_definitions
+    .alterTable('object_definitions', (table) => {
+      table
+        .enum('orgWideDefault', ['private', 'public_read', 'public_read_write'])
+        .defaultTo('private')
+        .notNullable();
+    })
+    // Create role_object_permissions table
+    .createTable('role_object_permissions', (table) => {
+      table.uuid('id').primary().defaultTo(knex.raw('(UUID())'));
+      table.uuid('roleId').notNullable();
+      table.uuid('objectDefinitionId').notNullable();
+      table.boolean('canCreate').defaultTo(false);
+      table.boolean('canRead').defaultTo(false);
+      table.boolean('canEdit').defaultTo(false);
+      table.boolean('canDelete').defaultTo(false);
+      table.boolean('canViewAll').defaultTo(false);
+      table.boolean('canModifyAll').defaultTo(false);
+      table.timestamps(true, true);
+
+      table
+        .foreign('roleId')
+        .references('id')
+        .inTable('roles')
+        .onDelete('CASCADE');
+      table
+        .foreign('objectDefinitionId')
+        .references('id')
+        .inTable('object_definitions')
+        .onDelete('CASCADE');
+      table.unique(['roleId', 'objectDefinitionId']);
+      table.index(['roleId']);
+      table.index(['objectDefinitionId']);
+    })
+    // Create role_field_permissions table
+    .createTable('role_field_permissions', (table) => {
+      table.uuid('id').primary().defaultTo(knex.raw('(UUID())'));
+      table.uuid('roleId').notNullable();
+      table.uuid('fieldDefinitionId').notNullable();
+      table.boolean('canRead').defaultTo(true);
+      table.boolean('canEdit').defaultTo(true);
+      table.timestamps(true, true);
+
+      table
+        .foreign('roleId')
+        .references('id')
+        .inTable('roles')
+        .onDelete('CASCADE');
+      table
+        .foreign('fieldDefinitionId')
+        .references('id')
+        .inTable('field_definitions')
+        .onDelete('CASCADE');
+      table.unique(['roleId', 'fieldDefinitionId']);
+      table.index(['roleId']);
+      table.index(['fieldDefinitionId']);
+    })
+    // Create record_shares table for sharing specific records
+    .createTable('record_shares', (table) => {
+      table.uuid('id').primary().defaultTo(knex.raw('(UUID())'));
+      table.uuid('objectDefinitionId').notNullable();
+      table.uuid('recordId').notNullable();
+      table.uuid('granteeUserId').notNullable();
+      table.uuid('grantedByUserId').notNullable();
+      table.json('accessLevel').notNullable(); // { canRead, canEdit, canDelete }
+      table.timestamp('expiresAt').nullable();
+      table.timestamp('revokedAt').nullable();
+      table.timestamp('createdAt').defaultTo(knex.fn.now());
+      table.timestamp('updatedAt').defaultTo(knex.fn.now());
+
+      table
+        .foreign('objectDefinitionId')
+        .references('id')
+        .inTable('object_definitions')
+        .onDelete('CASCADE');
+      table
+        .foreign('granteeUserId')
+        .references('id')
+        .inTable('users')
+        .onDelete('CASCADE');
+      table
+        .foreign('grantedByUserId')
+        .references('id')
+        .inTable('users')
+        .onDelete('CASCADE');
+      table.index(['objectDefinitionId', 'recordId']);
+      table.index(['granteeUserId']);
+      table.index(['expiresAt']);
+      table.index(['revokedAt']);
+    });
+};
+
+exports.down = function (knex) {
+  return knex.schema
+    .dropTableIfExists('record_shares')
+    .dropTableIfExists('role_field_permissions')
+    .dropTableIfExists('role_object_permissions')
+    .alterTable('object_definitions', (table) => {
+      table.dropColumn('orgWideDefault');
+    });
+};

backend/migrations/tenant/20250203000001_create_calls_table.js

@@ -0,0 +1,55 @@
+/**
+ * @param { import("knex").Knex } knex
+ * @returns { Promise<void> }
+ */
+exports.up = async function (knex) {
+  // Create calls table for tracking voice calls
+  await knex.schema.createTable('calls', (table) => {
+    table.string('id', 36).primary();
+    table.string('call_sid', 100).unique().notNullable().comment('Twilio call SID');
+    table.enum('direction', ['inbound', 'outbound']).notNullable();
+    table.string('from_number', 20).notNullable();
+    table.string('to_number', 20).notNullable();
+    table.enum('status', [
+      'queued',
+      'ringing',
+      'in-progress',
+      'completed',
+      'busy',
+      'failed',
+      'no-answer',
+      'canceled'
+    ]).notNullable().defaultTo('queued');
+    table.integer('duration_seconds').unsigned().nullable();
+    table.string('recording_url', 500).nullable();
+    table.text('ai_transcript').nullable().comment('Full transcript from OpenAI');
+    table.text('ai_summary').nullable().comment('AI-generated summary');
+    table.json('ai_insights').nullable().comment('Structured insights from AI');
+    table.string('user_id', 36).notNullable().comment('User who handled the call');
+    table.timestamp('started_at').nullable();
+    table.timestamp('ended_at').nullable();
+    table.timestamp('created_at').defaultTo(knex.fn.now());
+    table.timestamp('updated_at').defaultTo(knex.fn.now());
+
+    // Indexes
+    table.index('call_sid');
+    table.index('user_id');
+    table.index('status');
+    table.index('direction');
+    table.index(['created_at', 'user_id']);
+
+    // Foreign key to users table
+    table.foreign('user_id').references('id').inTable('users').onDelete('CASCADE');
+  });
+
+  console.log('✅ Created calls table');
+};
+
+/**
+ * @param { import("knex").Knex } knex
+ * @returns { Promise<void> }
+ */
+exports.down = async function (knex) {
+  await knex.schema.dropTableIfExists('calls');
+  console.log('✅ Dropped calls table');
+};

backend/package.json

@@ -17,36 +17,54 @@
     "test:watch": "jest --watch",
     "test:cov": "jest --coverage",
     "test:debug": "node --inspect-brk -r tsconfig-paths/register -r ts-node/register node_modules/.bin/jest --runInBand",
-    "test:e2e": "jest --config ./test/jest-e2e.json"
+    "test:e2e": "jest --config ./test/jest-e2e.json",
+    "migrate:make": "knex migrate:make --knexfile=knexfile.js",
+    "migrate:latest": "knex migrate:latest --knexfile=knexfile.js",
+    "migrate:rollback": "knex migrate:rollback --knexfile=knexfile.js",
+    "migrate:status": "ts-node -r tsconfig-paths/register scripts/check-migration-status.ts",
+    "migrate:tenant": "ts-node -r tsconfig-paths/register scripts/migrate-tenant.ts",
+    "migrate:all-tenants": "ts-node -r tsconfig-paths/register scripts/migrate-all-tenants.ts"
   },
   "dependencies": {
+    "@casl/ability": "^6.7.5",
+    "@fastify/websocket": "^10.0.1",
+    "@nestjs/bullmq": "^10.1.0",
     "@nestjs/common": "^10.3.0",
+    "@nestjs/config": "^3.1.1",
     "@nestjs/core": "^10.3.0",
-    "@nestjs/platform-fastify": "^10.3.0",
     "@nestjs/jwt": "^10.2.0",
     "@nestjs/passport": "^10.0.3",
-    "@nestjs/config": "^3.1.1",
-    "@nestjs/bullmq": "^10.1.0",
+    "@nestjs/platform-fastify": "^10.3.0",
+    "@nestjs/platform-socket.io": "^10.4.20",
+    "@nestjs/serve-static": "^4.0.2",
+    "@nestjs/websockets": "^10.4.20",
     "@prisma/client": "^5.8.0",
-    "passport": "^0.7.0",
-    "passport-jwt": "^4.0.1",
     "bcrypt": "^5.1.1",
     "bullmq": "^5.1.0",
-    "ioredis": "^5.3.2",
-    "class-validator": "^0.14.1",
     "class-transformer": "^0.5.1",
+    "class-validator": "^0.14.1",
+    "ioredis": "^5.3.2",
+    "knex": "^3.1.0",
+    "mysql2": "^3.15.3",
+    "objection": "^3.1.5",
+    "openai": "^6.15.0",
+    "passport": "^0.7.0",
+    "passport-jwt": "^4.0.1",
     "reflect-metadata": "^0.2.1",
-    "rxjs": "^7.8.1"
+    "rxjs": "^7.8.1",
+    "socket.io": "^4.8.3",
+    "twilio": "^5.11.1",
+    "ws": "^8.18.3"
   },
   "devDependencies": {
     "@nestjs/cli": "^10.3.0",
     "@nestjs/schematics": "^10.1.0",
     "@nestjs/testing": "^10.3.0",
+    "@types/bcrypt": "^5.0.2",
     "@types/express": "^4.17.21",
     "@types/jest": "^29.5.11",
     "@types/node": "^20.11.0",
     "@types/passport-jwt": "^4.0.0",
-    "@types/bcrypt": "^5.0.2",
     "@typescript-eslint/eslint-plugin": "^6.19.0",
     "@typescript-eslint/parser": "^6.19.0",
     "eslint": "^8.56.0",

backend/prisma/migrations/20251126221924_init_central_db/migration.sql

@@ -0,0 +1,116 @@
+/*
+  Warnings:
+
+  - You are about to drop the column `isActive` on the `tenants` table. All the data in the column will be lost.
+  - You are about to drop the `accounts` table. If the table is not empty, all the data it contains will be lost.
+  - You are about to drop the `app_pages` table. If the table is not empty, all the data it contains will be lost.
+  - You are about to drop the `apps` table. If the table is not empty, all the data it contains will be lost.
+  - You are about to drop the `field_definitions` table. If the table is not empty, all the data it contains will be lost.
+  - You are about to drop the `object_definitions` table. If the table is not empty, all the data it contains will be lost.
+  - You are about to drop the `permissions` table. If the table is not empty, all the data it contains will be lost.
+  - You are about to drop the `role_permissions` table. If the table is not empty, all the data it contains will be lost.
+  - You are about to drop the `roles` table. If the table is not empty, all the data it contains will be lost.
+  - You are about to drop the `user_roles` table. If the table is not empty, all the data it contains will be lost.
+  - You are about to drop the `users` table. If the table is not empty, all the data it contains will be lost.
+  - Added the required column `dbHost` to the `tenants` table without a default value. This is not possible if the table is not empty.
+  - Added the required column `dbName` to the `tenants` table without a default value. This is not possible if the table is not empty.
+  - Added the required column `dbPassword` to the `tenants` table without a default value. This is not possible if the table is not empty.
+  - Added the required column `dbUsername` to the `tenants` table without a default value. This is not possible if the table is not empty.
+
+*/
+-- DropForeignKey
+ALTER TABLE `accounts` DROP FOREIGN KEY `accounts_ownerId_fkey`;
+
+-- DropForeignKey
+ALTER TABLE `accounts` DROP FOREIGN KEY `accounts_tenantId_fkey`;
+
+-- DropForeignKey
+ALTER TABLE `app_pages` DROP FOREIGN KEY `app_pages_appId_fkey`;
+
+-- DropForeignKey
+ALTER TABLE `app_pages` DROP FOREIGN KEY `app_pages_objectId_fkey`;
+
+-- DropForeignKey
+ALTER TABLE `apps` DROP FOREIGN KEY `apps_tenantId_fkey`;
+
+-- DropForeignKey
+ALTER TABLE `field_definitions` DROP FOREIGN KEY `field_definitions_objectId_fkey`;
+
+-- DropForeignKey
+ALTER TABLE `object_definitions` DROP FOREIGN KEY `object_definitions_tenantId_fkey`;
+
+-- DropForeignKey
+ALTER TABLE `permissions` DROP FOREIGN KEY `permissions_tenantId_fkey`;
+
+-- DropForeignKey
+ALTER TABLE `role_permissions` DROP FOREIGN KEY `role_permissions_permissionId_fkey`;
+
+-- DropForeignKey
+ALTER TABLE `role_permissions` DROP FOREIGN KEY `role_permissions_roleId_fkey`;
+
+-- DropForeignKey
+ALTER TABLE `roles` DROP FOREIGN KEY `roles_tenantId_fkey`;
+
+-- DropForeignKey
+ALTER TABLE `user_roles` DROP FOREIGN KEY `user_roles_roleId_fkey`;
+
+-- DropForeignKey
+ALTER TABLE `user_roles` DROP FOREIGN KEY `user_roles_userId_fkey`;
+
+-- DropForeignKey
+ALTER TABLE `users` DROP FOREIGN KEY `users_tenantId_fkey`;
+
+-- AlterTable
+ALTER TABLE `tenants` DROP COLUMN `isActive`,
+    ADD COLUMN `dbHost` VARCHAR(191) NOT NULL,
+    ADD COLUMN `dbName` VARCHAR(191) NOT NULL,
+    ADD COLUMN `dbPassword` VARCHAR(191) NOT NULL,
+    ADD COLUMN `dbPort` INTEGER NOT NULL DEFAULT 3306,
+    ADD COLUMN `dbUsername` VARCHAR(191) NOT NULL,
+    ADD COLUMN `status` VARCHAR(191) NOT NULL DEFAULT 'active';
+
+-- DropTable
+DROP TABLE `accounts`;
+
+-- DropTable
+DROP TABLE `app_pages`;
+
+-- DropTable
+DROP TABLE `apps`;
+
+-- DropTable
+DROP TABLE `field_definitions`;
+
+-- DropTable
+DROP TABLE `object_definitions`;
+
+-- DropTable
+DROP TABLE `permissions`;
+
+-- DropTable
+DROP TABLE `role_permissions`;
+
+-- DropTable
+DROP TABLE `roles`;
+
+-- DropTable
+DROP TABLE `user_roles`;
+
+-- DropTable
+DROP TABLE `users`;
+
+-- CreateTable
+CREATE TABLE `domains` (
+    `id` VARCHAR(191) NOT NULL,
+    `domain` VARCHAR(191) NOT NULL,
+    `tenantId` VARCHAR(191) NOT NULL,
+    `isPrimary` BOOLEAN NOT NULL DEFAULT false,
+    `createdAt` DATETIME(3) NOT NULL DEFAULT CURRENT_TIMESTAMP(3),
+    `updatedAt` DATETIME(3) NOT NULL,
+
+    UNIQUE INDEX `domains_domain_key`(`domain`),
+    PRIMARY KEY (`id`)
+) DEFAULT CHARACTER SET utf8mb4 COLLATE utf8mb4_unicode_ci;
+
+-- AddForeignKey
+ALTER TABLE `domains` ADD CONSTRAINT `domains_tenantId_fkey` FOREIGN KEY (`tenantId`) REFERENCES `tenants`(`id`) ON DELETE CASCADE ON UPDATE CASCADE;

backend/prisma/migrations/20251129033827_init/migration.sql

@@ -0,0 +1,238 @@
+/*
+  Warnings:
+
+  - You are about to drop the column `dbHost` on the `tenants` table. All the data in the column will be lost.
+  - You are about to drop the column `dbName` on the `tenants` table. All the data in the column will be lost.
+  - You are about to drop the column `dbPassword` on the `tenants` table. All the data in the column will be lost.
+  - You are about to drop the column `dbPort` on the `tenants` table. All the data in the column will be lost.
+  - You are about to drop the column `dbUsername` on the `tenants` table. All the data in the column will be lost.
+  - You are about to drop the column `status` on the `tenants` table. All the data in the column will be lost.
+  - You are about to drop the `domains` table. If the table is not empty, all the data it contains will be lost.
+
+*/
+-- DropForeignKey
+ALTER TABLE `domains` DROP FOREIGN KEY `domains_tenantId_fkey`;
+
+-- AlterTable
+ALTER TABLE `tenants` DROP COLUMN `dbHost`,
+    DROP COLUMN `dbName`,
+    DROP COLUMN `dbPassword`,
+    DROP COLUMN `dbPort`,
+    DROP COLUMN `dbUsername`,
+    DROP COLUMN `status`,
+    ADD COLUMN `isActive` BOOLEAN NOT NULL DEFAULT true;
+
+-- DropTable
+DROP TABLE `domains`;
+
+-- CreateTable
+CREATE TABLE `users` (
+    `id` VARCHAR(191) NOT NULL,
+    `tenantId` VARCHAR(191) NOT NULL,
+    `email` VARCHAR(191) NOT NULL,
+    `password` VARCHAR(191) NOT NULL,
+    `firstName` VARCHAR(191) NULL,
+    `lastName` VARCHAR(191) NULL,
+    `isActive` BOOLEAN NOT NULL DEFAULT true,
+    `createdAt` DATETIME(3) NOT NULL DEFAULT CURRENT_TIMESTAMP(3),
+    `updatedAt` DATETIME(3) NOT NULL,
+
+    INDEX `users_tenantId_idx`(`tenantId`),
+    UNIQUE INDEX `users_tenantId_email_key`(`tenantId`, `email`),
+    PRIMARY KEY (`id`)
+) DEFAULT CHARACTER SET utf8mb4 COLLATE utf8mb4_unicode_ci;
+
+-- CreateTable
+CREATE TABLE `roles` (
+    `id` VARCHAR(191) NOT NULL,
+    `tenantId` VARCHAR(191) NOT NULL,
+    `name` VARCHAR(191) NOT NULL,
+    `guardName` VARCHAR(191) NOT NULL DEFAULT 'api',
+    `description` VARCHAR(191) NULL,
+    `createdAt` DATETIME(3) NOT NULL DEFAULT CURRENT_TIMESTAMP(3),
+    `updatedAt` DATETIME(3) NOT NULL,
+
+    INDEX `roles_tenantId_idx`(`tenantId`),
+    UNIQUE INDEX `roles_tenantId_name_guardName_key`(`tenantId`, `name`, `guardName`),
+    PRIMARY KEY (`id`)
+) DEFAULT CHARACTER SET utf8mb4 COLLATE utf8mb4_unicode_ci;
+
+-- CreateTable
+CREATE TABLE `permissions` (
+    `id` VARCHAR(191) NOT NULL,
+    `tenantId` VARCHAR(191) NOT NULL,
+    `name` VARCHAR(191) NOT NULL,
+    `guardName` VARCHAR(191) NOT NULL DEFAULT 'api',
+    `description` VARCHAR(191) NULL,
+    `createdAt` DATETIME(3) NOT NULL DEFAULT CURRENT_TIMESTAMP(3),
+    `updatedAt` DATETIME(3) NOT NULL,
+
+    INDEX `permissions_tenantId_idx`(`tenantId`),
+    UNIQUE INDEX `permissions_tenantId_name_guardName_key`(`tenantId`, `name`, `guardName`),
+    PRIMARY KEY (`id`)
+) DEFAULT CHARACTER SET utf8mb4 COLLATE utf8mb4_unicode_ci;
+
+-- CreateTable
+CREATE TABLE `user_roles` (
+    `id` VARCHAR(191) NOT NULL,
+    `userId` VARCHAR(191) NOT NULL,
+    `roleId` VARCHAR(191) NOT NULL,
+    `createdAt` DATETIME(3) NOT NULL DEFAULT CURRENT_TIMESTAMP(3),
+
+    INDEX `user_roles_userId_idx`(`userId`),
+    INDEX `user_roles_roleId_idx`(`roleId`),
+    UNIQUE INDEX `user_roles_userId_roleId_key`(`userId`, `roleId`),
+    PRIMARY KEY (`id`)
+) DEFAULT CHARACTER SET utf8mb4 COLLATE utf8mb4_unicode_ci;
+
+-- CreateTable
+CREATE TABLE `role_permissions` (
+    `id` VARCHAR(191) NOT NULL,
+    `roleId` VARCHAR(191) NOT NULL,
+    `permissionId` VARCHAR(191) NOT NULL,
+    `createdAt` DATETIME(3) NOT NULL DEFAULT CURRENT_TIMESTAMP(3),
+
+    INDEX `role_permissions_roleId_idx`(`roleId`),
+    INDEX `role_permissions_permissionId_idx`(`permissionId`),
+    UNIQUE INDEX `role_permissions_roleId_permissionId_key`(`roleId`, `permissionId`),
+    PRIMARY KEY (`id`)
+) DEFAULT CHARACTER SET utf8mb4 COLLATE utf8mb4_unicode_ci;
+
+-- CreateTable
+CREATE TABLE `object_definitions` (
+    `id` VARCHAR(191) NOT NULL,
+    `tenantId` VARCHAR(191) NOT NULL,
+    `apiName` VARCHAR(191) NOT NULL,
+    `label` VARCHAR(191) NOT NULL,
+    `pluralLabel` VARCHAR(191) NULL,
+    `description` TEXT NULL,
+    `isSystem` BOOLEAN NOT NULL DEFAULT false,
+    `tableName` VARCHAR(191) NULL,
+    `isActive` BOOLEAN NOT NULL DEFAULT true,
+    `createdAt` DATETIME(3) NOT NULL DEFAULT CURRENT_TIMESTAMP(3),
+    `updatedAt` DATETIME(3) NOT NULL,
+
+    INDEX `object_definitions_tenantId_idx`(`tenantId`),
+    UNIQUE INDEX `object_definitions_tenantId_apiName_key`(`tenantId`, `apiName`),
+    PRIMARY KEY (`id`)
+) DEFAULT CHARACTER SET utf8mb4 COLLATE utf8mb4_unicode_ci;
+
+-- CreateTable
+CREATE TABLE `field_definitions` (
+    `id` VARCHAR(191) NOT NULL,
+    `objectId` VARCHAR(191) NOT NULL,
+    `apiName` VARCHAR(191) NOT NULL,
+    `label` VARCHAR(191) NOT NULL,
+    `type` VARCHAR(191) NOT NULL,
+    `description` TEXT NULL,
+    `isRequired` BOOLEAN NOT NULL DEFAULT false,
+    `isUnique` BOOLEAN NOT NULL DEFAULT false,
+    `isReadonly` BOOLEAN NOT NULL DEFAULT false,
+    `isLookup` BOOLEAN NOT NULL DEFAULT false,
+    `referenceTo` VARCHAR(191) NULL,
+    `defaultValue` VARCHAR(191) NULL,
+    `options` JSON NULL,
+    `validationRules` JSON NULL,
+    `isActive` BOOLEAN NOT NULL DEFAULT true,
+    `createdAt` DATETIME(3) NOT NULL DEFAULT CURRENT_TIMESTAMP(3),
+    `updatedAt` DATETIME(3) NOT NULL,
+
+    INDEX `field_definitions_objectId_idx`(`objectId`),
+    UNIQUE INDEX `field_definitions_objectId_apiName_key`(`objectId`, `apiName`),
+    PRIMARY KEY (`id`)
+) DEFAULT CHARACTER SET utf8mb4 COLLATE utf8mb4_unicode_ci;
+
+-- CreateTable
+CREATE TABLE `accounts` (
+    `id` VARCHAR(191) NOT NULL,
+    `tenantId` VARCHAR(191) NOT NULL,
+    `name` VARCHAR(191) NOT NULL,
+    `status` VARCHAR(191) NOT NULL DEFAULT 'active',
+    `ownerId` VARCHAR(191) NOT NULL,
+    `createdAt` DATETIME(3) NOT NULL DEFAULT CURRENT_TIMESTAMP(3),
+    `updatedAt` DATETIME(3) NOT NULL,
+
+    INDEX `accounts_tenantId_idx`(`tenantId`),
+    INDEX `accounts_ownerId_idx`(`ownerId`),
+    PRIMARY KEY (`id`)
+) DEFAULT CHARACTER SET utf8mb4 COLLATE utf8mb4_unicode_ci;
+
+-- CreateTable
+CREATE TABLE `apps` (
+    `id` VARCHAR(191) NOT NULL,
+    `tenantId` VARCHAR(191) NOT NULL,
+    `slug` VARCHAR(191) NOT NULL,
+    `label` VARCHAR(191) NOT NULL,
+    `description` TEXT NULL,
+    `icon` VARCHAR(191) NULL,
+    `isActive` BOOLEAN NOT NULL DEFAULT true,
+    `createdAt` DATETIME(3) NOT NULL DEFAULT CURRENT_TIMESTAMP(3),
+    `updatedAt` DATETIME(3) NOT NULL,
+
+    INDEX `apps_tenantId_idx`(`tenantId`),
+    UNIQUE INDEX `apps_tenantId_slug_key`(`tenantId`, `slug`),
+    PRIMARY KEY (`id`)
+) DEFAULT CHARACTER SET utf8mb4 COLLATE utf8mb4_unicode_ci;
+
+-- CreateTable
+CREATE TABLE `app_pages` (
+    `id` VARCHAR(191) NOT NULL,
+    `appId` VARCHAR(191) NOT NULL,
+    `slug` VARCHAR(191) NOT NULL,
+    `label` VARCHAR(191) NOT NULL,
+    `type` VARCHAR(191) NOT NULL,
+    `objectApiName` VARCHAR(191) NULL,
+    `objectId` VARCHAR(191) NULL,
+    `config` JSON NULL,
+    `sortOrder` INTEGER NOT NULL DEFAULT 0,
+    `isActive` BOOLEAN NOT NULL DEFAULT true,
+    `createdAt` DATETIME(3) NOT NULL DEFAULT CURRENT_TIMESTAMP(3),
+    `updatedAt` DATETIME(3) NOT NULL,
+
+    INDEX `app_pages_appId_idx`(`appId`),
+    INDEX `app_pages_objectId_idx`(`objectId`),
+    UNIQUE INDEX `app_pages_appId_slug_key`(`appId`, `slug`),
+    PRIMARY KEY (`id`)
+) DEFAULT CHARACTER SET utf8mb4 COLLATE utf8mb4_unicode_ci;
+
+-- AddForeignKey
+ALTER TABLE `users` ADD CONSTRAINT `users_tenantId_fkey` FOREIGN KEY (`tenantId`) REFERENCES `tenants`(`id`) ON DELETE CASCADE ON UPDATE CASCADE;
+
+-- AddForeignKey
+ALTER TABLE `roles` ADD CONSTRAINT `roles_tenantId_fkey` FOREIGN KEY (`tenantId`) REFERENCES `tenants`(`id`) ON DELETE CASCADE ON UPDATE CASCADE;
+
+-- AddForeignKey
+ALTER TABLE `permissions` ADD CONSTRAINT `permissions_tenantId_fkey` FOREIGN KEY (`tenantId`) REFERENCES `tenants`(`id`) ON DELETE CASCADE ON UPDATE CASCADE;
+
+-- AddForeignKey
+ALTER TABLE `user_roles` ADD CONSTRAINT `user_roles_userId_fkey` FOREIGN KEY (`userId`) REFERENCES `users`(`id`) ON DELETE CASCADE ON UPDATE CASCADE;
+
+-- AddForeignKey
+ALTER TABLE `user_roles` ADD CONSTRAINT `user_roles_roleId_fkey` FOREIGN KEY (`roleId`) REFERENCES `roles`(`id`) ON DELETE CASCADE ON UPDATE CASCADE;
+
+-- AddForeignKey
+ALTER TABLE `role_permissions` ADD CONSTRAINT `role_permissions_roleId_fkey` FOREIGN KEY (`roleId`) REFERENCES `roles`(`id`) ON DELETE CASCADE ON UPDATE CASCADE;
+
+-- AddForeignKey
+ALTER TABLE `role_permissions` ADD CONSTRAINT `role_permissions_permissionId_fkey` FOREIGN KEY (`permissionId`) REFERENCES `permissions`(`id`) ON DELETE CASCADE ON UPDATE CASCADE;
+
+-- AddForeignKey
+ALTER TABLE `object_definitions` ADD CONSTRAINT `object_definitions_tenantId_fkey` FOREIGN KEY (`tenantId`) REFERENCES `tenants`(`id`) ON DELETE CASCADE ON UPDATE CASCADE;
+
+-- AddForeignKey
+ALTER TABLE `field_definitions` ADD CONSTRAINT `field_definitions_objectId_fkey` FOREIGN KEY (`objectId`) REFERENCES `object_definitions`(`id`) ON DELETE CASCADE ON UPDATE CASCADE;
+
+-- AddForeignKey
+ALTER TABLE `accounts` ADD CONSTRAINT `accounts_tenantId_fkey` FOREIGN KEY (`tenantId`) REFERENCES `tenants`(`id`) ON DELETE CASCADE ON UPDATE CASCADE;
+
+-- AddForeignKey
+ALTER TABLE `accounts` ADD CONSTRAINT `accounts_ownerId_fkey` FOREIGN KEY (`ownerId`) REFERENCES `users`(`id`) ON DELETE RESTRICT ON UPDATE CASCADE;
+
+-- AddForeignKey
+ALTER TABLE `apps` ADD CONSTRAINT `apps_tenantId_fkey` FOREIGN KEY (`tenantId`) REFERENCES `tenants`(`id`) ON DELETE CASCADE ON UPDATE CASCADE;
+
+-- AddForeignKey
+ALTER TABLE `app_pages` ADD CONSTRAINT `app_pages_appId_fkey` FOREIGN KEY (`appId`) REFERENCES `apps`(`id`) ON DELETE CASCADE ON UPDATE CASCADE;
+
+-- AddForeignKey
+ALTER TABLE `app_pages` ADD CONSTRAINT `app_pages_objectId_fkey` FOREIGN KEY (`objectId`) REFERENCES `object_definitions`(`id`) ON DELETE SET NULL ON UPDATE CASCADE;

backend/prisma/migrations/20251129042156_add_tenant_db_fields/migration.sql

@@ -0,0 +1,116 @@
+/*
+  Warnings:
+
+  - You are about to drop the column `isActive` on the `tenants` table. All the data in the column will be lost.
+  - You are about to drop the `accounts` table. If the table is not empty, all the data it contains will be lost.
+  - You are about to drop the `app_pages` table. If the table is not empty, all the data it contains will be lost.
+  - You are about to drop the `apps` table. If the table is not empty, all the data it contains will be lost.
+  - You are about to drop the `field_definitions` table. If the table is not empty, all the data it contains will be lost.
+  - You are about to drop the `object_definitions` table. If the table is not empty, all the data it contains will be lost.
+  - You are about to drop the `permissions` table. If the table is not empty, all the data it contains will be lost.
+  - You are about to drop the `role_permissions` table. If the table is not empty, all the data it contains will be lost.
+  - You are about to drop the `roles` table. If the table is not empty, all the data it contains will be lost.
+  - You are about to drop the `user_roles` table. If the table is not empty, all the data it contains will be lost.
+  - You are about to drop the `users` table. If the table is not empty, all the data it contains will be lost.
+  - Added the required column `dbHost` to the `tenants` table without a default value. This is not possible if the table is not empty.
+  - Added the required column `dbName` to the `tenants` table without a default value. This is not possible if the table is not empty.
+  - Added the required column `dbPassword` to the `tenants` table without a default value. This is not possible if the table is not empty.
+  - Added the required column `dbUsername` to the `tenants` table without a default value. This is not possible if the table is not empty.
+
+*/
+-- DropForeignKey
+ALTER TABLE `accounts` DROP FOREIGN KEY `accounts_ownerId_fkey`;
+
+-- DropForeignKey
+ALTER TABLE `accounts` DROP FOREIGN KEY `accounts_tenantId_fkey`;
+
+-- DropForeignKey
+ALTER TABLE `app_pages` DROP FOREIGN KEY `app_pages_appId_fkey`;
+
+-- DropForeignKey
+ALTER TABLE `app_pages` DROP FOREIGN KEY `app_pages_objectId_fkey`;
+
+-- DropForeignKey
+ALTER TABLE `apps` DROP FOREIGN KEY `apps_tenantId_fkey`;
+
+-- DropForeignKey
+ALTER TABLE `field_definitions` DROP FOREIGN KEY `field_definitions_objectId_fkey`;
+
+-- DropForeignKey
+ALTER TABLE `object_definitions` DROP FOREIGN KEY `object_definitions_tenantId_fkey`;
+
+-- DropForeignKey
+ALTER TABLE `permissions` DROP FOREIGN KEY `permissions_tenantId_fkey`;
+
+-- DropForeignKey
+ALTER TABLE `role_permissions` DROP FOREIGN KEY `role_permissions_permissionId_fkey`;
+
+-- DropForeignKey
+ALTER TABLE `role_permissions` DROP FOREIGN KEY `role_permissions_roleId_fkey`;
+
+-- DropForeignKey
+ALTER TABLE `roles` DROP FOREIGN KEY `roles_tenantId_fkey`;
+
+-- DropForeignKey
+ALTER TABLE `user_roles` DROP FOREIGN KEY `user_roles_roleId_fkey`;
+
+-- DropForeignKey
+ALTER TABLE `user_roles` DROP FOREIGN KEY `user_roles_userId_fkey`;
+
+-- DropForeignKey
+ALTER TABLE `users` DROP FOREIGN KEY `users_tenantId_fkey`;
+
+-- AlterTable
+ALTER TABLE `tenants` DROP COLUMN `isActive`,
+    ADD COLUMN `dbHost` VARCHAR(191) NOT NULL,
+    ADD COLUMN `dbName` VARCHAR(191) NOT NULL,
+    ADD COLUMN `dbPassword` VARCHAR(191) NOT NULL,
+    ADD COLUMN `dbPort` INTEGER NOT NULL DEFAULT 3306,
+    ADD COLUMN `dbUsername` VARCHAR(191) NOT NULL,
+    ADD COLUMN `status` VARCHAR(191) NOT NULL DEFAULT 'active';
+
+-- DropTable
+DROP TABLE `accounts`;
+
+-- DropTable
+DROP TABLE `app_pages`;
+
+-- DropTable
+DROP TABLE `apps`;
+
+-- DropTable
+DROP TABLE `field_definitions`;
+
+-- DropTable
+DROP TABLE `object_definitions`;
+
+-- DropTable
+DROP TABLE `permissions`;
+
+-- DropTable
+DROP TABLE `role_permissions`;
+
+-- DropTable
+DROP TABLE `roles`;
+
+-- DropTable
+DROP TABLE `user_roles`;
+
+-- DropTable
+DROP TABLE `users`;
+
+-- CreateTable
+CREATE TABLE `domains` (
+    `id` VARCHAR(191) NOT NULL,
+    `domain` VARCHAR(191) NOT NULL,
+    `tenantId` VARCHAR(191) NOT NULL,
+    `isPrimary` BOOLEAN NOT NULL DEFAULT false,
+    `createdAt` DATETIME(3) NOT NULL DEFAULT CURRENT_TIMESTAMP(3),
+    `updatedAt` DATETIME(3) NOT NULL,
+
+    UNIQUE INDEX `domains_domain_key`(`domain`),
+    PRIMARY KEY (`id`)
+) DEFAULT CHARACTER SET utf8mb4 COLLATE utf8mb4_unicode_ci;
+
+-- AddForeignKey
+ALTER TABLE `domains` ADD CONSTRAINT `domains_tenantId_fkey` FOREIGN KEY (`tenantId`) REFERENCES `tenants`(`id`) ON DELETE CASCADE ON UPDATE CASCADE;

backend/prisma/migrations/20251221012138_add_users_to_central/migration.sql

@@ -0,0 +1,15 @@
+-- CreateTable
+CREATE TABLE `users` (
+    `id` VARCHAR(191) NOT NULL,
+    `email` VARCHAR(191) NOT NULL,
+    `password` VARCHAR(191) NOT NULL,
+    `firstName` VARCHAR(191) NULL,
+    `lastName` VARCHAR(191) NULL,
+    `role` VARCHAR(191) NOT NULL DEFAULT 'admin',
+    `isActive` BOOLEAN NOT NULL DEFAULT true,
+    `createdAt` DATETIME(3) NOT NULL DEFAULT CURRENT_TIMESTAMP(3),
+    `updatedAt` DATETIME(3) NOT NULL,
+
+    UNIQUE INDEX `users_email_key`(`email`),
+    PRIMARY KEY (`id`)
+) DEFAULT CHARACTER SET utf8mb4 COLLATE utf8mb4_unicode_ci;

backend/prisma/migrations/20260103054426_add_integrations_config/migration.sql

@@ -0,0 +1,2 @@
+-- AlterTable
+ALTER TABLE `tenants` ADD COLUMN `integrationsConfig` JSON NULL;

backend/prisma/migrations/migration_lock.toml

@@ -1,3 +1,3 @@
 # Please do not edit this file manually
 # It should be added in your version-control system (i.e. Git)
-provider = "mysql"
+provider = "mysql"

backend/prisma/schema-central.prisma

@@ -0,0 +1,56 @@
+generator client {
+  provider      = "prisma-client-js"
+  output        = "../node_modules/.prisma/central"
+  binaryTargets = ["native", "debian-openssl-3.0.x"]
+}
+
+datasource db {
+  provider = "mysql"
+  url      = env("CENTRAL_DATABASE_URL")
+}
+
+model User {
+  id        String   @id @default(cuid())
+  email     String   @unique
+  password  String
+  firstName String?
+  lastName  String?
+  role      String   @default("admin") // admin, superadmin
+  isActive  Boolean  @default(true)
+  createdAt DateTime @default(now())
+  updatedAt DateTime @updatedAt
+
+  @@map("users")
+}
+
+model Tenant {
+  id                 String   @id @default(cuid())
+  name               String
+  slug               String   @unique // Used for identification
+  dbHost             String   // Database host
+  dbPort             Int      @default(3306)
+  dbName             String   // Database name
+  dbUsername         String   // Database username
+  dbPassword         String   // Encrypted database password
+  integrationsConfig Json?    // Encrypted JSON config for external services (Twilio, OpenAI, etc.)
+  status             String   @default("active") // active, suspended, deleted
+  createdAt          DateTime @default(now())
+  updatedAt          DateTime @updatedAt
+
+  domains     Domain[]
+
+  @@map("tenants")
+}
+
+model Domain {
+  id         String   @id @default(cuid())
+  domain     String   @unique // e.g., "acme" for acme.yourapp.com
+  tenantId   String
+  isPrimary  Boolean  @default(false)
+  createdAt  DateTime @default(now())
+  updatedAt  DateTime @updatedAt
+
+  tenant     Tenant   @relation(fields: [tenantId], references: [id], onDelete: Cascade)
+
+  @@map("domains")
+}

backend/prisma/schema.prisma

@@ -1,39 +1,22 @@
-// This is your Prisma schema file,
-// learn more about it in the docs: https://pris.ly/d/prisma-schema
+// Tenant-specific database schema
+// This schema is applied to each tenant's database
+// NOTE: Each tenant has its own database, so there is NO tenantId column in these tables
 
 generator client {
-  provider = "prisma-client-js"
+  provider      = "prisma-client-js"
+  output        = "../node_modules/.prisma/tenant"
+  binaryTargets = ["native", "debian-openssl-3.0.x"]
 }
 
 datasource db {
   provider = "mysql"
-  url      = env("DATABASE_URL")
-}
-
-// Multi-tenancy
-model Tenant {
-  id        String   @id @default(uuid())
-  name      String
-  slug      String   @unique
-  isActive  Boolean  @default(true)
-  createdAt DateTime @default(now())
-  updatedAt DateTime @updatedAt
-
-  users              User[]
-  objectDefinitions  ObjectDefinition[]
-  accounts           Account[]
-  apps               App[]
-  roles              Role[]
-  permissions        Permission[]
-
-  @@map("tenants")
+  url      = env("TENANT_DATABASE_URL")
 }
 
 // User & Auth
 model User {
   id        String   @id @default(uuid())
-  tenantId  String
-  email     String
+  email     String   @unique
   password  String
   firstName String?
   lastName  String?
@@ -41,48 +24,39 @@ model User {
   createdAt DateTime @default(now())
   updatedAt DateTime @updatedAt
 
-  tenant    Tenant     @relation(fields: [tenantId], references: [id], onDelete: Cascade)
   userRoles UserRole[]
   accounts  Account[]
 
-  @@unique([tenantId, email])
-  @@index([tenantId])
   @@map("users")
 }
 
 // RBAC - Spatie-like
 model Role {
   id          String   @id @default(uuid())
-  tenantId    String
   name        String
   guardName   String   @default("api")
   description String?
   createdAt   DateTime @default(now())
   updatedAt   DateTime @updatedAt
 
-  tenant          Tenant           @relation(fields: [tenantId], references: [id], onDelete: Cascade)
   userRoles       UserRole[]
   rolePermissions RolePermission[]
 
-  @@unique([tenantId, name, guardName])
-  @@index([tenantId])
+  @@unique([name, guardName])
   @@map("roles")
 }
 
 model Permission {
   id          String   @id @default(uuid())
-  tenantId    String
   name        String
   guardName   String   @default("api")
   description String?
   createdAt   DateTime @default(now())
   updatedAt   DateTime @updatedAt
 
-  tenant          Tenant           @relation(fields: [tenantId], references: [id], onDelete: Cascade)
   rolePermissions RolePermission[]
 
-  @@unique([tenantId, name, guardName])
-  @@index([tenantId])
+  @@unique([name, guardName])
   @@map("permissions")
 }
 
@@ -119,66 +93,60 @@ model RolePermission {
 // Object Definition (Metadata)
 model ObjectDefinition {
   id          String   @id @default(uuid())
-  tenantId    String
-  apiName     String
+  apiName     String   @unique
   label       String
   pluralLabel String?
   description String?  @db.Text
   isSystem    Boolean  @default(false)
-  tableName   String?
-  isActive    Boolean  @default(true)
-  createdAt   DateTime @default(now())
-  updatedAt   DateTime @updatedAt
+  isCustom    Boolean  @default(true)
+  createdAt   DateTime @default(now()) @map("created_at")
+  updatedAt   DateTime @updatedAt @map("updated_at")
 
-  tenant Tenant            @relation(fields: [tenantId], references: [id], onDelete: Cascade)
   fields FieldDefinition[]
   pages  AppPage[]
 
-  @@unique([tenantId, apiName])
-  @@index([tenantId])
   @@map("object_definitions")
 }
 
 model FieldDefinition {
-  id               String   @id @default(uuid())
-  objectId         String
-  apiName          String
-  label            String
-  type             String // text, number, boolean, date, datetime, lookup, picklist, etc.
-  description      String?  @db.Text
-  isRequired       Boolean  @default(false)
-  isUnique         Boolean  @default(false)
-  isReadonly       Boolean  @default(false)
-  isLookup         Boolean  @default(false)
-  referenceTo      String? // objectApiName for lookup fields
-  defaultValue     String?
-  options          Json? // for picklist fields
-  validationRules  Json? // custom validation rules
-  isActive         Boolean  @default(true)
-  createdAt        DateTime @default(now())
-  updatedAt        DateTime @updatedAt
+  id                   String   @id @default(uuid())
+  objectDefinitionId   String
+  apiName              String
+  label                String
+  type                 String // String, Number, Date, Boolean, Reference, etc.
+  length               Int?
+  precision            Int?
+  scale                Int?
+  referenceObject      String?
+  defaultValue         String?  @db.Text
+  description          String?  @db.Text
+  isRequired           Boolean  @default(false)
+  isUnique             Boolean  @default(false)
+  isSystem             Boolean  @default(false)
+  isCustom             Boolean  @default(true)
+  displayOrder         Int      @default(0)
+  uiMetadata           Json?    @map("ui_metadata")
+  createdAt            DateTime @default(now()) @map("created_at")
+  updatedAt            DateTime @updatedAt @map("updated_at")
 
-  object ObjectDefinition @relation(fields: [objectId], references: [id], onDelete: Cascade)
+  object ObjectDefinition @relation(fields: [objectDefinitionId], references: [id], onDelete: Cascade)
 
-  @@unique([objectId, apiName])
-  @@index([objectId])
+  @@unique([objectDefinitionId, apiName])
+  @@index([objectDefinitionId])
   @@map("field_definitions")
 }
 
 // Example static object: Account
 model Account {
   id        String   @id @default(uuid())
-  tenantId  String
   name      String
   status    String   @default("active")
   ownerId   String
   createdAt DateTime @default(now())
   updatedAt DateTime @updatedAt
 
-  tenant Tenant @relation(fields: [tenantId], references: [id], onDelete: Cascade)
   owner  User   @relation(fields: [ownerId], references: [id])
 
-  @@index([tenantId])
   @@index([ownerId])
   @@map("accounts")
 }
@@ -186,8 +154,7 @@ model Account {
 // Application Builder
 model App {
   id          String   @id @default(uuid())
-  tenantId    String
-  slug        String
+  slug        String   @unique
   label       String
   description String?  @db.Text
   icon        String?
@@ -195,11 +162,8 @@ model App {
   createdAt   DateTime @default(now())
   updatedAt   DateTime @updatedAt
 
-  tenant Tenant    @relation(fields: [tenantId], references: [id], onDelete: Cascade)
   pages  AppPage[]
 
-  @@unique([tenantId, slug])
-  @@index([tenantId])
   @@map("apps")
 }
 

backend/scripts/README.md

@@ -0,0 +1,239 @@
+# Tenant Migration & Admin Scripts
+
+This directory contains scripts for managing database migrations across all tenants and creating admin users in the multi-tenant platform.
+
+## Admin User Management
+
+### Create Central Admin User
+
+```bash
+npm run create-central-admin
+```
+
+Creates an administrator user in the **central database**. Central admins can:
+- Manage tenants (create, update, delete)
+- Access platform-wide administration features
+- View all tenant information
+- Manage tenant provisioning
+
+**Interactive Mode:**
+```bash
+npm run create-central-admin
+# You will be prompted for:
+# - Email
+# - Password
+# - First Name (optional)
+# - Last Name (optional)
+# - Role (admin or superadmin)
+```
+
+**Non-Interactive Mode (using environment variables):**
+```bash
+EMAIL=admin@example.com PASSWORD=securepass123 FIRST_NAME=John LAST_NAME=Doe ROLE=superadmin npm run create-central-admin
+```
+
+**Logging In as Central Admin:**
+1. Access the application using a central subdomain (e.g., `central.yourdomain.com` or `admin.yourdomain.com`)
+2. Enter your central admin credentials
+3. You'll be authenticated against the central database (not a tenant database)
+
+**Note:** The system automatically detects if you're logging in from a central subdomain based on the `CENTRAL_SUBDOMAINS` environment variable (defaults to `central,admin`). No special UI or configuration is needed on the frontend.
+
+### Create Tenant User
+
+For creating users within a specific tenant database, use:
+```bash
+npm run create-tenant-user <tenant-slug>
+# (Note: This script may need to be created or already exists)
+```
+
+## Migration Scripts
+
+### 1. Create a New Migration
+
+```bash
+npm run migrate:make <migration_name>
+```
+
+Creates a new migration file in `migrations/tenant/` directory.
+
+**Example:**
+```bash
+npm run migrate:make add_status_field_to_contacts
+```
+
+### 2. Migrate a Single Tenant
+
+```bash
+npm run migrate:tenant <tenant-slug-or-id>
+```
+
+Runs all pending migrations for a specific tenant. You can identify the tenant by its slug or ID.
+
+**Example:**
+```bash
+npm run migrate:tenant acme-corp
+npm run migrate:tenant cm5a1b2c3d4e5f6g7h8i9j0k
+```
+
+### 3. Migrate All Tenants
+
+```bash
+npm run migrate:all-tenants
+```
+
+Runs all pending migrations for **all active tenants** in the system. This is useful when:
+- You've created a new migration that needs to be applied to all tenants
+- You're updating the schema across the entire platform
+- You need to ensure all tenants are up to date
+
+**Output:**
+- Shows progress for each tenant
+- Lists which migrations were applied
+- Provides a summary at the end
+- Exits with error code if any tenant fails
+
+### 4. Rollback Migration (Manual)
+
+```bash
+npm run migrate:rollback
+```
+
+⚠️ **Warning:** This runs a rollback on the **default database** configured in `knexfile.js`. For tenant-specific rollbacks, you'll need to manually configure the connection.
+
+## Migration Flow
+
+### During New Tenant Provisioning
+
+When a new tenant is created via the API, migrations are automatically run as part of the provisioning process:
+
+1. Tenant database is created
+2. `TenantProvisioningService.runTenantMigrations()` is called
+3. All migrations in `migrations/tenant/` are executed
+
+### For Existing Tenants
+
+When you add a new migration file and need to apply it to existing tenants:
+
+1. Create the migration:
+   ```bash
+   npm run migrate:make add_new_feature
+   ```
+
+2. Edit the generated migration file in `migrations/tenant/`
+
+3. Test on a single tenant first:
+   ```bash
+   npm run migrate:tenant test-tenant
+   ```
+
+4. If successful, apply to all tenants:
+   ```bash
+   npm run migrate:all-tenants
+   ```
+
+## Migration Directory Structure
+
+```
+backend/
+├── migrations/
+│   └── tenant/                    # Tenant-specific migrations
+│       ├── 20250126000001_create_users_and_rbac.js
+│       ├── 20250126000002_create_object_definitions.js
+│       └── ...
+├── scripts/
+│   ├── migrate-tenant.ts         # Single tenant migration
+│   └── migrate-all-tenants.ts    # All tenants migration
+└── knexfile.js                   # Knex configuration
+```
+
+## Security Notes
+
+### Database Password Encryption
+
+Tenant database passwords are encrypted in the central database using AES-256-CBC encryption. The migration scripts automatically:
+
+1. Fetch tenant connection details from the central database
+2. Decrypt the database password using the `DB_ENCRYPTION_KEY` environment variable
+3. Connect to the tenant database
+4. Run migrations
+5. Close the connection
+
+**Required Environment Variable:**
+```bash
+DB_ENCRYPTION_KEY=your-32-character-secret-key!!
+```
+
+This key must match the key used by `TenantService` for encryption.
+
+## Troubleshooting
+
+### Migration Fails for One Tenant
+
+If `migrate:all-tenants` fails for a specific tenant:
+
+1. Check the error message in the output
+2. Investigate the tenant's database directly
+3. Fix the issue (manual SQL, data cleanup, etc.)
+4. Re-run migrations for that tenant: `npm run migrate:tenant <slug>`
+5. Once fixed, run `migrate:all-tenants` again to ensure others are updated
+
+### Migration Already Exists
+
+Knex tracks which migrations have been run in the `knex_migrations` table in each tenant database. If a migration was already applied, it will be skipped automatically.
+
+### Connection Issues
+
+If you see connection errors:
+
+1. Verify the central database is accessible
+2. Check that tenant database credentials are correct
+3. Ensure `DB_ENCRYPTION_KEY` matches the one used for encryption
+4. Verify the tenant's database server is running and accessible
+
+## Example Migration File
+
+```javascript
+// migrations/tenant/20250126000006_add_custom_fields.js
+
+exports.up = async function(knex) {
+  await knex.schema.table('field_definitions', (table) => {
+    table.boolean('is_custom').defaultTo(false);
+    table.string('custom_type', 50).nullable();
+  });
+};
+
+exports.down = async function(knex) {
+  await knex.schema.table('field_definitions', (table) => {
+    table.dropColumn('is_custom');
+    table.dropColumn('custom_type');
+  });
+};
+```
+
+## Best Practices
+
+1. **Always test on a single tenant first** before running migrations on all tenants
+2. **Include rollback logic** in your `down()` function
+3. **Use transactions** for complex multi-step migrations
+4. **Backup production databases** before running migrations
+5. **Monitor the output** when running `migrate:all-tenants` to catch any failures
+6. **Version control** your migration files
+7. **Document breaking changes** in migration comments
+8. **Consider data migrations** separately from schema migrations when dealing with large datasets
+
+## CI/CD Integration
+
+In your deployment pipeline, you can automatically migrate all tenants:
+
+```bash
+# After deploying new code
+npm run migrate:all-tenants
+```
+
+Or integrate it into your Docker deployment:
+
+```dockerfile
+# In your Dockerfile or docker-compose.yml
+CMD npm run migrate:all-tenants && npm run start:prod
+```

backend/scripts/check-migration-status.ts

@@ -0,0 +1,181 @@
+import { PrismaClient as CentralPrismaClient } from '.prisma/central';
+import knex, { Knex } from 'knex';
+import { createDecipheriv } from 'crypto';
+
+// Encryption configuration
+const ALGORITHM = 'aes-256-cbc';
+
+/**
+ * Decrypt a tenant's database password
+ */
+function decryptPassword(encryptedPassword: string): string {
+  try {
+    // Check if password is already plaintext (for legacy/development)
+    if (!encryptedPassword.includes(':')) {
+      return encryptedPassword;
+    }
+
+    const key = Buffer.from(process.env.ENCRYPTION_KEY, 'hex');
+    const parts = encryptedPassword.split(':');
+    if (parts.length !== 2) {
+      throw new Error('Invalid encrypted password format');
+    }
+
+    const iv = Buffer.from(parts[0], 'hex');
+    const encrypted = parts[1];
+    
+    const decipher = createDecipheriv(ALGORITHM, key, iv);
+    
+    let decrypted = decipher.update(encrypted, 'hex', 'utf8');
+    decrypted += decipher.final('utf8');
+    
+    return decrypted;
+  } catch (error) {
+    console.error('Error decrypting password:', error);
+    throw error;
+  }
+}
+
+/**
+ * Create a Knex connection for a specific tenant
+ */
+function createTenantKnexConnection(tenant: any): Knex {
+  const decryptedPassword = decryptPassword(tenant.dbPassword);
+
+  return knex({
+    client: 'mysql2',
+    connection: {
+      host: tenant.dbHost,
+      port: tenant.dbPort,
+      user: tenant.dbUsername,
+      password: decryptedPassword,
+      database: tenant.dbName,
+    },
+    migrations: {
+      tableName: 'knex_migrations',
+      directory: './migrations/tenant',
+    },
+  });
+}
+
+/**
+ * Get migration status for a specific tenant
+ */
+async function getTenantMigrationStatus(tenant: any): Promise<{
+  completed: string[];
+  pending: string[];
+}> {
+  const tenantKnex = createTenantKnexConnection(tenant);
+  
+  try {
+    const [completed, pending] = await tenantKnex.migrate.list();
+    return {
+      completed: completed[1] || [],
+      pending: pending || [],
+    };
+  } catch (error) {
+    throw error;
+  } finally {
+    await tenantKnex.destroy();
+  }
+}
+
+/**
+ * Check migration status across all tenants
+ */
+async function checkMigrationStatus() {
+  console.log('🔍 Checking migration status for all tenants...\n');
+  
+  const centralPrisma = new CentralPrismaClient();
+  
+  try {
+    // Fetch all active tenants
+    const tenants = await centralPrisma.tenant.findMany({
+      where: {
+        status: 'ACTIVE',
+      },
+      orderBy: {
+        name: 'asc',
+      },
+    });
+
+    if (tenants.length === 0) {
+      console.log('⚠️  No active tenants found.');
+      return;
+    }
+
+    console.log(`📋 Found ${tenants.length} active tenant(s)\n`);
+    console.log('='.repeat(80));
+
+    let allUpToDate = true;
+    const tenantsWithPending: { name: string; pending: string[] }[] = [];
+
+    // Check each tenant
+    for (const tenant of tenants) {
+      try {
+        const status = await getTenantMigrationStatus(tenant);
+        
+        console.log(`\n📦 ${tenant.name} (${tenant.slug})`);
+        console.log(`   Database: ${tenant.dbName}`);
+        console.log(`   Completed: ${status.completed.length} migration(s)`);
+        
+        if (status.pending.length > 0) {
+          allUpToDate = false;
+          console.log(`   ⚠️  Pending: ${status.pending.length} migration(s)`);
+          status.pending.forEach((migration) => {
+            console.log(`      - ${migration}`);
+          });
+          tenantsWithPending.push({
+            name: tenant.name,
+            pending: status.pending,
+          });
+        } else {
+          console.log(`   ✅ Up to date`);
+        }
+
+        // Show last 3 completed migrations
+        if (status.completed.length > 0) {
+          const recent = status.completed.slice(-3);
+          console.log(`   Recent migrations:`);
+          recent.forEach((migration) => {
+            console.log(`      - ${migration}`);
+          });
+        }
+      } catch (error) {
+        console.log(`\n❌ ${tenant.name}: Failed to check status`);
+        console.log(`   Error: ${error.message}`);
+        allUpToDate = false;
+      }
+    }
+
+    // Print summary
+    console.log('\n' + '='.repeat(80));
+    console.log('📊 Summary');
+    console.log('='.repeat(80));
+
+    if (allUpToDate) {
+      console.log('✅ All tenants are up to date!');
+    } else {
+      console.log(`⚠️  ${tenantsWithPending.length} tenant(s) have pending migrations:\n`);
+      tenantsWithPending.forEach(({ name, pending }) => {
+        console.log(`   ${name}: ${pending.length} pending`);
+      });
+      console.log('\n💡 Run: npm run migrate:all-tenants');
+    }
+  } catch (error) {
+    console.error('❌ Fatal error:', error);
+    process.exit(1);
+  } finally {
+    await centralPrisma.$disconnect();
+  }
+}
+
+// Run the status check
+checkMigrationStatus()
+  .then(() => {
+    process.exit(0);
+  })
+  .catch((error) => {
+    console.error('Unhandled error:', error);
+    process.exit(1);
+  });

backend/scripts/create-admin-user.ts

@@ -0,0 +1,50 @@
+import { PrismaClient as CentralPrismaClient } from '../node_modules/.prisma/central';
+import * as bcrypt from 'bcrypt';
+
+// Central database client
+const centralPrisma = new CentralPrismaClient();
+
+async function createAdminUser() {
+  const email = 'admin@example.com';
+  const password = 'admin123';
+  const firstName = 'Admin';
+  const lastName = 'User';
+
+  try {
+    // Check if admin user already exists
+    const existingUser = await centralPrisma.user.findUnique({
+      where: { email },
+    });
+
+    if (existingUser) {
+      console.log(`User ${email} already exists`);
+      return;
+    }
+
+    // Hash password
+    const hashedPassword = await bcrypt.hash(password, 10);
+
+    // Create admin user in central database
+    const user = await centralPrisma.user.create({
+      data: {
+        email,
+        password: hashedPassword,
+        firstName,
+        lastName,
+        role: 'superadmin',
+        isActive: true,
+      },
+    });
+
+    console.log('\nAdmin user created successfully!');
+    console.log('Email:', email);
+    console.log('Password:', password);
+    console.log('User ID:', user.id);
+  } catch (error) {
+    console.error('Error creating admin user:', error);
+  } finally {
+    await centralPrisma.$disconnect();
+  }
+}
+
+createAdminUser();

backend/scripts/create-tenant-user.ts

@@ -0,0 +1,138 @@
+import { PrismaClient as CentralPrismaClient } from '../node_modules/.prisma/central';
+import * as bcrypt from 'bcrypt';
+import { Knex, knex } from 'knex';
+
+// Central database client
+const centralPrisma = new CentralPrismaClient();
+
+async function createTenantUser() {
+  const tenantSlug = 'tenant1';
+  const email = 'user@example.com';
+  const password = 'user123';
+  const firstName = 'Test';
+  const lastName = 'User';
+
+  try {
+    // Get tenant database connection info
+    const tenant = await centralPrisma.tenant.findFirst({
+      where: { slug: tenantSlug },
+    });
+
+    if (!tenant) {
+      console.log(`Tenant ${tenantSlug} not found. Creating tenant...`);
+      
+      // Create tenant in central database
+      const newTenant = await centralPrisma.tenant.create({
+        data: {
+          name: 'Default Tenant',
+          slug: tenantSlug,
+          dbHost: 'db',
+          dbPort: 3306,
+          dbName: 'platform',
+          dbUsername: 'platform',
+          dbPassword: 'platform',
+          status: 'active',
+        },
+      });
+
+      console.log('Tenant created:', newTenant.slug);
+    } else {
+      console.log('Tenant found:', tenant.slug);
+    }
+
+    const tenantInfo = tenant || {
+      dbHost: 'db',
+      dbPort: 3306,
+      dbName: 'platform',
+      dbUsername: 'platform',
+      dbPassword: 'platform',
+    };
+
+    // Connect to tenant database (using root for now since tenant password is encrypted)
+    const tenantDb: Knex = knex({
+      client: 'mysql2',
+      connection: {
+        host: tenantInfo.dbHost,
+        port: tenantInfo.dbPort,
+        database: tenantInfo.dbName,
+        user: 'root',
+        password: 'asjdnfqTash37faggT',
+      },
+    });
+
+    // Check if user already exists
+    const existingUser = await tenantDb('users')
+      .where({ email })
+      .first();
+
+    if (existingUser) {
+      console.log(`User ${email} already exists in tenant ${tenantSlug}`);
+      await tenantDb.destroy();
+      return;
+    }
+
+    // Hash password
+    const hashedPassword = await bcrypt.hash(password, 10);
+
+    // Create user
+    await tenantDb('users').insert({
+      email,
+      password: hashedPassword,
+      firstName,
+      lastName,
+      isActive: true,
+      created_at: new Date(),
+      updated_at: new Date(),
+    });
+
+    console.log(`\nUser created successfully in tenant ${tenantSlug}!`);
+    console.log('Email:', email);
+    console.log('Password:', password);
+
+    // Create admin role if it doesn't exist
+    let adminRole = await tenantDb('roles')
+      .where({ name: 'admin' })
+      .first();
+
+    if (!adminRole) {
+      await tenantDb('roles').insert({
+        name: 'admin',
+        guardName: 'api',
+        description: 'Administrator role with full access',
+        created_at: new Date(),
+        updated_at: new Date(),
+      });
+      
+      adminRole = await tenantDb('roles')
+        .where({ name: 'admin' })
+        .first();
+      
+      console.log('Admin role created');
+    }
+
+    // Get the created user
+    const user = await tenantDb('users')
+      .where({ email })
+      .first();
+
+    // Assign admin role to user
+    if (adminRole && user) {
+      await tenantDb('user_roles').insert({
+        userId: user.id,
+        roleId: adminRole.id,
+        created_at: new Date(),
+        updated_at: new Date(),
+      });
+      
+      console.log('Admin role assigned to user');
+    }
+
+    await tenantDb.destroy();
+  } catch (error) {
+    console.error('Error creating tenant user:', error);
+  } finally {
+    await centralPrisma.$disconnect();
+  }
+}
+
+createTenantUser();

backend/scripts/migrate-all-tenants.ts

@@ -0,0 +1,169 @@
+import { PrismaClient as CentralPrismaClient } from '.prisma/central';
+import knex, { Knex } from 'knex';
+import { createDecipheriv } from 'crypto';
+
+// Encryption configuration - must match the one used in tenant service
+const ALGORITHM = 'aes-256-cbc';
+
+/**
+ * Decrypt a tenant's database password
+ */
+function decryptPassword(encryptedPassword: string): string {
+  try {
+    // Check if password is already plaintext (for legacy/development)
+    if (!encryptedPassword.includes(':')) {
+      console.warn('⚠️  Password appears to be unencrypted, using as-is');
+      return encryptedPassword;
+    }
+
+    const key = Buffer.from(process.env.ENCRYPTION_KEY, 'hex');
+    const parts = encryptedPassword.split(':');
+    if (parts.length !== 2) {
+      throw new Error('Invalid encrypted password format');
+    }
+
+    const iv = Buffer.from(parts[0], 'hex');
+    const encrypted = parts[1];
+    
+    const decipher = createDecipheriv(ALGORITHM, key, iv);
+    
+    let decrypted = decipher.update(encrypted, 'hex', 'utf8');
+    decrypted += decipher.final('utf8');
+    
+    return decrypted;
+  } catch (error) {
+    console.error('Error decrypting password:', error);
+    throw error;
+  }
+}
+
+/**
+ * Create a Knex connection for a specific tenant
+ */
+function createTenantKnexConnection(tenant: any): Knex {
+  const decryptedPassword = decryptPassword(tenant.dbPassword);
+
+  // Use Docker hostname 'db' when running inside container
+  // The dbHost will be 'db' for Docker connections or 'localhost' for local development
+  const dbHost = tenant.dbHost;
+
+  return knex({
+    client: 'mysql2',
+    connection: {
+      host: dbHost,
+      port: tenant.dbPort,
+      user: tenant.dbUsername,
+      password: decryptedPassword,
+      database: tenant.dbName,
+    },
+    migrations: {
+      tableName: 'knex_migrations',
+      directory: './migrations/tenant',
+    },
+  });
+}
+
+/**
+ * Run migrations for a specific tenant
+ */
+async function migrateTenant(tenant: any): Promise<void> {
+  console.log(`\n🔄 Migrating tenant: ${tenant.name} (${tenant.dbName})`);
+  
+  const tenantKnex = createTenantKnexConnection(tenant);
+  
+  try {
+    const [batchNo, log] = await tenantKnex.migrate.latest();
+    
+    if (log.length === 0) {
+      console.log(`✅ ${tenant.name}: Already up to date`);
+    } else {
+      console.log(`✅ ${tenant.name}: Ran ${log.length} migrations:`);
+      log.forEach((migration) => {
+        console.log(`   - ${migration}`);
+      });
+    }
+  } catch (error) {
+    console.error(`❌ ${tenant.name}: Migration failed:`, error);
+    throw error;
+  } finally {
+    await tenantKnex.destroy();
+  }
+}
+
+/**
+ * Main function to migrate all active tenants
+ */
+async function migrateAllTenants() {
+  console.log('🚀 Starting migration for all tenants...\n');
+  
+  const centralPrisma = new CentralPrismaClient();
+  
+  try {
+    // Fetch all active tenants
+    const tenants = await centralPrisma.tenant.findMany({
+      where: {
+        status: 'ACTIVE',
+      },
+      orderBy: {
+        name: 'asc',
+      },
+    });
+
+    if (tenants.length === 0) {
+      console.log('⚠️  No active tenants found.');
+      return;
+    }
+
+    console.log(`📋 Found ${tenants.length} active tenant(s)\n`);
+
+    let successCount = 0;
+    let failureCount = 0;
+    const failures: { tenant: string; error: string }[] = [];
+
+    // Migrate each tenant sequentially
+    for (const tenant of tenants) {
+      try {
+        await migrateTenant(tenant);
+        successCount++;
+      } catch (error) {
+        failureCount++;
+        failures.push({
+          tenant: tenant.name,
+          error: error.message,
+        });
+      }
+    }
+
+    // Print summary
+    console.log('\n' + '='.repeat(60));
+    console.log('📊 Migration Summary');
+    console.log('='.repeat(60));
+    console.log(`✅ Successful: ${successCount}`);
+    console.log(`❌ Failed: ${failureCount}`);
+
+    if (failures.length > 0) {
+      console.log('\n❌ Failed Tenants:');
+      failures.forEach(({ tenant, error }) => {
+        console.log(`   - ${tenant}: ${error}`);
+      });
+      process.exit(1);
+    } else {
+      console.log('\n🎉 All tenant migrations completed successfully!');
+    }
+  } catch (error) {
+    console.error('❌ Fatal error:', error);
+    process.exit(1);
+  } finally {
+    await centralPrisma.$disconnect();
+  }
+}
+
+// Run the migration
+migrateAllTenants()
+  .then(() => {
+    process.exit(0);
+  })
+  .catch((error) => {
+    console.error('Unhandled error:', error);
+    process.exit(1);
+  });

backend/scripts/migrate-tenant.ts

@@ -0,0 +1,134 @@
+import { PrismaClient as CentralPrismaClient } from '.prisma/central';
+import knex, { Knex } from 'knex';
+import { createDecipheriv } from 'crypto';
+
+// Encryption configuration
+const ALGORITHM = 'aes-256-cbc';
+
+/**
+ * Decrypt a tenant's database password
+ */
+function decryptPassword(encryptedPassword: string): string {
+  try {
+    // Check if password is already plaintext (for legacy/development)
+    if (!encryptedPassword.includes(':')) {
+      console.warn('⚠️  Password appears to be unencrypted, using as-is');
+      return encryptedPassword;
+    }
+
+    const key = Buffer.from(process.env.ENCRYPTION_KEY, 'hex');
+    const parts = encryptedPassword.split(':');
+    if (parts.length !== 2) {
+      throw new Error('Invalid encrypted password format');
+    }
+
+    const iv = Buffer.from(parts[0], 'hex');
+    const encrypted = parts[1];
+    
+    const decipher = createDecipheriv(ALGORITHM, key, iv);
+    
+    let decrypted = decipher.update(encrypted, 'hex', 'utf8');
+    decrypted += decipher.final('utf8');
+    
+    return decrypted;
+  } catch (error) {
+    console.error('Error decrypting password:', error);
+    throw error;
+  }
+}
+
+/**
+ * Create a Knex connection for a specific tenant
+ */
+function createTenantKnexConnection(tenant: any): Knex {
+  const decryptedPassword = decryptPassword(tenant.dbPassword);
+
+  return knex({
+    client: 'mysql2',
+    connection: {
+      host: tenant.dbHost,
+      port: tenant.dbPort,
+      user: tenant.dbUsername,
+      password: decryptedPassword,
+      database: tenant.dbName,
+    },
+    migrations: {
+      tableName: 'knex_migrations',
+      directory: './migrations/tenant',
+    },
+  });
+}
+
+/**
+ * Migrate a specific tenant by slug or ID
+ */
+async function migrateTenant() {
+  const tenantIdentifier = process.argv[2];
+
+  if (!tenantIdentifier) {
+    console.error('❌ Usage: npm run migrate:tenant <tenant-slug-or-id>');
+    process.exit(1);
+  }
+
+  console.log(`🔍 Looking for tenant: ${tenantIdentifier}\n`);
+
+  const centralPrisma = new CentralPrismaClient();
+
+  try {
+    // Find tenant by slug or ID
+    const tenant = await centralPrisma.tenant.findFirst({
+      where: {
+        OR: [
+          { slug: tenantIdentifier },
+          { id: tenantIdentifier },
+        ],
+      },
+    });
+
+    if (!tenant) {
+      console.error(`❌ Tenant not found: ${tenantIdentifier}`);
+      process.exit(1);
+    }
+
+    console.log(`📋 Tenant: ${tenant.name} (${tenant.slug})`);
+    console.log(`📊 Database: ${tenant.dbName}`);
+    console.log(`🔄 Running migrations...\n`);
+
+    const tenantKnex = createTenantKnexConnection(tenant);
+
+    try {
+      const [batchNo, log] = await tenantKnex.migrate.latest();
+
+      if (log.length === 0) {
+        console.log(`✅ Already up to date (batch ${batchNo})`);
+      } else {
+        console.log(`✅ Ran ${log.length} migration(s) (batch ${batchNo}):`);
+        log.forEach((migration) => {
+          console.log(`   - ${migration}`);
+        });
+      }
+
+      console.log('\n🎉 Migration completed successfully!');
+    } catch (error) {
+      console.error('❌ Migration failed:', error.message);
+      throw error;
+    } finally {
+      await tenantKnex.destroy();
+    }
+  } catch (error) {
+    console.error('❌ Fatal error:', error);
+    process.exit(1);
+  } finally {
+    await centralPrisma.$disconnect();
+  }
+}
+
+// Run the migration
+migrateTenant()
+  .then(() => {
+    process.exit(0);
+  })
+  .catch((error) => {
+    console.error('Unhandled error:', error);
+    process.exit(1);
+  });

backend/scripts/seed-default-roles.ts

@@ -0,0 +1,181 @@
+import { Knex } from 'knex';
+import * as knexLib from 'knex';
+
+/**
+ * Create a Knex connection for tenant database
+ */
+function createKnexConnection(database: string): Knex {
+  return knexLib.default({
+    client: 'mysql2',
+    connection: {
+      host: process.env.DB_HOST || 'db',
+      port: parseInt(process.env.DB_PORT || '3306'),
+      user: 'root',
+      password: 'asjdnfqTash37faggT',
+      database: database,
+    },
+  });
+}
+
+interface RoleWithPermissions {
+  name: string;
+  description: string;
+  objectPermissions: {
+    [objectApiName: string]: {
+      canCreate: boolean;
+      canRead: boolean;
+      canEdit: boolean;
+      canDelete: boolean;
+      canViewAll: boolean;
+      canModifyAll: boolean;
+    };
+  };
+}
+
+const DEFAULT_ROLES: RoleWithPermissions[] = [
+  {
+    name: 'System Administrator',
+    description: 'Full access to all objects and records. Can view and modify all data.',
+    objectPermissions: {
+      '*': {
+        canCreate: true,
+        canRead: true,
+        canEdit: true,
+        canDelete: true,
+        canViewAll: true,
+        canModifyAll: true,
+      },
+    },
+  },
+  {
+    name: 'Standard User',
+    description: 'Can create, read, edit, and delete own records. Respects OWD settings.',
+    objectPermissions: {
+      '*': {
+        canCreate: true,
+        canRead: true,
+        canEdit: true,
+        canDelete: true,
+        canViewAll: false,
+        canModifyAll: false,
+      },
+    },
+  },
+  {
+    name: 'Read Only',
+    description: 'Can only read records based on OWD settings. No create, edit, or delete.',
+    objectPermissions: {
+      '*': {
+        canCreate: false,
+        canRead: true,
+        canEdit: false,
+        canDelete: false,
+        canViewAll: false,
+        canModifyAll: false,
+      },
+    },
+  },
+];
+
+async function seedRolesForTenant(knex: Knex, tenantName: string) {
+  console.log(`\n🌱 Seeding roles for tenant: ${tenantName}`);
+
+  // Get all object definitions
+  const objectDefinitions = await knex('object_definitions').select('id', 'apiName');
+
+  for (const roleData of DEFAULT_ROLES) {
+    // Check if role already exists
+    const existingRole = await knex('roles')
+      .where({ name: roleData.name })
+      .first();
+
+    let roleId: string;
+
+    if (existingRole) {
+      console.log(`   ℹ️  Role "${roleData.name}" already exists, skipping...`);
+      roleId = existingRole.id;
+    } else {
+      // Create role
+      await knex('roles').insert({
+        name: roleData.name,
+        guardName: 'api',
+        description: roleData.description,
+      });
+
+      // Get the inserted role
+      const newRole = await knex('roles')
+        .where({ name: roleData.name })
+        .first();
+
+      roleId = newRole.id;
+      console.log(`   ✅ Created role: ${roleData.name}`);
+    }
+
+    // Create object permissions for all objects
+    const wildcardPermissions = roleData.objectPermissions['*'];
+    
+    for (const objectDef of objectDefinitions) {
+      // Check if permission already exists
+      const existingPermission = await knex('role_object_permissions')
+        .where({
+          roleId: roleId,
+          objectDefinitionId: objectDef.id,
+        })
+        .first();
+
+      if (!existingPermission) {
+        await knex('role_object_permissions').insert({
+          roleId: roleId,
+          objectDefinitionId: objectDef.id,
+          canCreate: wildcardPermissions.canCreate,
+          canRead: wildcardPermissions.canRead,
+          canEdit: wildcardPermissions.canEdit,
+          canDelete: wildcardPermissions.canDelete,
+          canViewAll: wildcardPermissions.canViewAll,
+          canModifyAll: wildcardPermissions.canModifyAll,
+        });
+      }
+    }
+
+    console.log(`   📋 Set permissions for ${objectDefinitions.length} objects`);
+  }
+}
+
+async function seedAllTenants() {
+  console.log('🚀 Starting role seeding for all tenants...\n');
+
+  // For now, seed the main tenant database
+  const databases = ['tenant_tenant1'];
+
+  let successCount = 0;
+  let errorCount = 0;
+
+  for (const database of databases) {
+    try {
+      const knex = createKnexConnection(database);
+      await seedRolesForTenant(knex, database);
+      await knex.destroy();
+      successCount++;
+    } catch (error) {
+      console.error(`❌ ${database}: Seeding failed:`, error.message);
+      errorCount++;
+    }
+  }
+
+  console.log('\n============================================================');
+  console.log('📊 Seeding Summary');
+  console.log('============================================================');
+  console.log(`✅ Successful: ${successCount}`);
+  console.log(`❌ Failed: ${errorCount}`);
+
+  if (errorCount === 0) {
+    console.log('\n🎉 All tenant roles seeded successfully!');
+  }
+}
+
+seedAllTenants()
+  .then(() => process.exit(0))
+  .catch((error) => {
+    console.error('Unhandled error:', error);
+    process.exit(1);
+  });

backend/scripts/update-name-field.ts

@@ -0,0 +1,72 @@
+import { getCentralPrisma } from '../src/prisma/central-prisma.service';
+import * as knex from 'knex';
+import * as crypto from 'crypto';
+
+function decrypt(text: string): string {
+  const parts = text.split(':');
+  const iv = Buffer.from(parts.shift()!, 'hex');
+  const encryptedText = Buffer.from(parts.join(':'), 'hex');
+  const key = Buffer.from(process.env.ENCRYPTION_KEY, 'hex');
+  const decipher = crypto.createDecipheriv(
+    'aes-256-cbc',
+    key,
+    iv,
+  );
+  let decrypted = decipher.update(encryptedText);
+  decrypted = Buffer.concat([decrypted, decipher.final()]);
+  return decrypted.toString();
+}
+
+async function updateNameField() {
+  const centralPrisma = getCentralPrisma();
+  
+  try {
+    // Find tenant1
+    const tenant = await centralPrisma.tenant.findFirst({
+      where: {
+        OR: [
+          { id: 'tenant1' },
+          { slug: 'tenant1' },
+        ],
+      },
+    });
+
+    if (!tenant) {
+      console.error('❌ Tenant tenant1 not found');
+      process.exit(1);
+    }
+
+    console.log(`📋 Tenant: ${tenant.name} (${tenant.slug})`);
+    console.log(`📊 Database: ${tenant.dbName}`);
+
+    // Decrypt password
+    const password = decrypt(tenant.dbPassword);
+
+    // Create connection
+    const tenantKnex = knex.default({
+      client: 'mysql2',
+      connection: {
+        host: tenant.dbHost,
+        port: tenant.dbPort,
+        user: tenant.dbUsername,
+        password: password,
+        database: tenant.dbName,
+      },
+    });
+
+    // Update Account object
+    await tenantKnex('object_definitions')
+      .where({ apiName: 'Account' })
+      .update({ nameField: 'name' });
+
+    console.log('✅ Updated Account object nameField to "name"');
+
+    await tenantKnex.destroy();
+    await centralPrisma.$disconnect();
+  } catch (error) {
+    console.error('❌ Error:', error);
+    process.exit(1);
+  }
+}
+
+updateNameField();

backend/seeds/example_account_fields_with_ui_metadata.js

@@ -0,0 +1,147 @@
+/**
+ * Example seed data for Account object with UI metadata
+ * Run this after migrations to add UI metadata to existing Account fields
+ */
+
+exports.seed = async function(knex) {
+  // Get the Account object
+  const accountObj = await knex('object_definitions')
+    .where({ apiName: 'Account' })
+    .first();
+
+  if (!accountObj) {
+    console.log('Account object not found. Please run migrations first.');
+    return;
+  }
+
+  console.log(`Found Account object with ID: ${accountObj.id}`);
+
+  // Update existing Account fields with UI metadata
+  const fieldsToUpdate = [
+    {
+      apiName: 'name',
+      ui_metadata: JSON.stringify({
+        fieldType: 'TEXT',
+        placeholder: 'Enter account name',
+        helpText: 'The name of the organization or company',
+        showOnList: true,
+        showOnDetail: true,
+        showOnEdit: true,
+        sortable: true,
+        section: 'basic',
+        sectionLabel: 'Basic Information',
+        sectionOrder: 1,
+        validationRules: [
+          { type: 'required', message: 'Account name is required' },
+          { type: 'minLength', value: 2, message: 'Account name must be at least 2 characters' },
+          { type: 'maxLength', value: 255, message: 'Account name cannot exceed 255 characters' }
+        ]
+      })
+    },
+    {
+      apiName: 'website',
+      ui_metadata: JSON.stringify({
+        fieldType: 'URL',
+        placeholder: 'https://www.example.com',
+        helpText: 'Company website URL',
+        showOnList: true,
+        showOnDetail: true,
+        showOnEdit: true,
+        sortable: true,
+        section: 'basic',
+        sectionLabel: 'Basic Information',
+        sectionOrder: 1,
+        validationRules: [
+          { type: 'url', message: 'Please enter a valid URL' }
+        ]
+      })
+    },
+    {
+      apiName: 'phone',
+      ui_metadata: JSON.stringify({
+        fieldType: 'TEXT',
+        placeholder: '+1 (555) 000-0000',
+        helpText: 'Primary phone number',
+        showOnList: true,
+        showOnDetail: true,
+        showOnEdit: true,
+        sortable: false,
+        section: 'contact',
+        sectionLabel: 'Contact Information',
+        sectionOrder: 2,
+        validationRules: [
+          { type: 'pattern', value: '^\\+?[0-9\\s\\-\\(\\)]+$', message: 'Please enter a valid phone number' }
+        ]
+      })
+    },
+    {
+      apiName: 'industry',
+      ui_metadata: JSON.stringify({
+        fieldType: 'SELECT',
+        placeholder: 'Select industry',
+        helpText: 'The primary industry this account operates in',
+        showOnList: true,
+        showOnDetail: true,
+        showOnEdit: true,
+        sortable: true,
+        section: 'details',
+        sectionLabel: 'Account Details',
+        sectionOrder: 3,
+        options: [
+          { value: 'technology', label: 'Technology' },
+          { value: 'finance', label: 'Finance' },
+          { value: 'healthcare', label: 'Healthcare' },
+          { value: 'manufacturing', label: 'Manufacturing' },
+          { value: 'retail', label: 'Retail' },
+          { value: 'education', label: 'Education' },
+          { value: 'government', label: 'Government' },
+          { value: 'nonprofit', label: 'Non-Profit' },
+          { value: 'other', label: 'Other' }
+        ]
+      })
+    },
+    {
+      apiName: 'ownerId',
+      ui_metadata: JSON.stringify({
+        fieldType: 'SELECT',
+        placeholder: 'Select owner',
+        helpText: 'The user who owns this account',
+        showOnList: true,
+        showOnDetail: true,
+        showOnEdit: true,
+        sortable: true,
+        section: 'system',
+        sectionLabel: 'System Information',
+        sectionOrder: 4,
+        // This would be dynamically populated from the users table
+        // For now, providing static structure
+        isReference: true,
+        referenceObject: 'User',
+        referenceDisplayField: 'name'
+      })
+    }
+  ];
+
+  // Update each field with UI metadata
+  for (const fieldUpdate of fieldsToUpdate) {
+    const result = await knex('field_definitions')
+      .where({ 
+        objectDefinitionId: accountObj.id,
+        apiName: fieldUpdate.apiName
+      })
+      .update({ 
+        ui_metadata: fieldUpdate.ui_metadata,
+        updated_at: knex.fn.now()
+      });
+    
+    if (result > 0) {
+      console.log(`✓ Updated ${fieldUpdate.apiName} with UI metadata`);
+    } else {
+      console.log(`✗ Field ${fieldUpdate.apiName} not found`);
+    }
+  }
+
+  console.log('\n✅ Account fields UI metadata seed completed successfully!');
+  console.log('You can now fetch the Account object UI config via:');
+  console.log('GET /api/setup/objects/Account/ui-config');
+};

backend/seeds/example_contact_fields_with_ui_metadata.js

@@ -0,0 +1,349 @@
+/**
+ * Example seed data for Contact object with UI metadata
+ * Run this after creating the object definition
+ */
+
+exports.seed = async function(knex) {
+  // Get or create the Contact object
+  const [contactObj] = await knex('object_definitions')
+    .where({ api_name: 'Contact' })
+    .select('id');
+
+  if (!contactObj) {
+    console.log('Contact object not found. Please create it first.');
+    return;
+  }
+
+  // Define fields with UI metadata
+  const fields = [
+    {
+      object_definition_id: contactObj.id,
+      api_name: 'firstName',
+      label: 'First Name',
+      type: 'text',
+      is_required: true,
+      is_system: false,
+      is_custom: false,
+      display_order: 1,
+      ui_metadata: {
+        placeholder: 'Enter first name',
+        helpText: 'The contact\'s given name',
+        showOnList: true,
+        showOnDetail: true,
+        showOnEdit: true,
+        sortable: true,
+        validationRules: [
+          { type: 'min', value: 2, message: 'First name must be at least 2 characters' },
+          { type: 'max', value: 50, message: 'First name cannot exceed 50 characters' }
+        ]
+      }
+    },
+    {
+      object_definition_id: contactObj.id,
+      api_name: 'lastName',
+      label: 'Last Name',
+      type: 'text',
+      is_required: true,
+      is_system: false,
+      is_custom: false,
+      display_order: 2,
+      ui_metadata: {
+        placeholder: 'Enter last name',
+        helpText: 'The contact\'s family name',
+        showOnList: true,
+        showOnDetail: true,
+        showOnEdit: true,
+        sortable: true,
+        validationRules: [
+          { type: 'min', value: 2, message: 'Last name must be at least 2 characters' },
+          { type: 'max', value: 50, message: 'Last name cannot exceed 50 characters' }
+        ]
+      }
+    },
+    {
+      object_definition_id: contactObj.id,
+      api_name: 'email',
+      label: 'Email',
+      type: 'email',
+      is_required: true,
+      is_unique: true,
+      is_system: false,
+      is_custom: false,
+      display_order: 3,
+      ui_metadata: {
+        placeholder: 'email@example.com',
+        helpText: 'Primary email address',
+        showOnList: true,
+        showOnDetail: true,
+        showOnEdit: true,
+        sortable: true,
+        validationRules: [
+          { type: 'email', message: 'Please enter a valid email address' }
+        ]
+      }
+    },
+    {
+      object_definition_id: contactObj.id,
+      api_name: 'phone',
+      label: 'Phone',
+      type: 'text',
+      is_required: false,
+      is_system: false,
+      is_custom: false,
+      display_order: 4,
+      ui_metadata: {
+        placeholder: '+1 (555) 000-0000',
+        helpText: 'Primary phone number',
+        showOnList: true,
+        showOnDetail: true,
+        showOnEdit: true,
+        sortable: false,
+        validationRules: [
+          { type: 'pattern', value: '^\\+?[0-9\\s\\-\\(\\)]+$', message: 'Please enter a valid phone number' }
+        ]
+      }
+    },
+    {
+      object_definition_id: contactObj.id,
+      api_name: 'company',
+      label: 'Company',
+      type: 'text',
+      is_required: false,
+      is_system: false,
+      is_custom: false,
+      display_order: 5,
+      ui_metadata: {
+        placeholder: 'Company name',
+        helpText: 'The organization this contact works for',
+        showOnList: true,
+        showOnDetail: true,
+        showOnEdit: true,
+        sortable: true
+      }
+    },
+    {
+      object_definition_id: contactObj.id,
+      api_name: 'jobTitle',
+      label: 'Job Title',
+      type: 'text',
+      is_required: false,
+      is_system: false,
+      is_custom: false,
+      display_order: 6,
+      ui_metadata: {
+        placeholder: 'e.g., Senior Manager',
+        showOnList: false,
+        showOnDetail: true,
+        showOnEdit: true,
+        sortable: false
+      }
+    },
+    {
+      object_definition_id: contactObj.id,
+      api_name: 'status',
+      label: 'Status',
+      type: 'picklist',
+      is_required: true,
+      is_system: false,
+      is_custom: false,
+      display_order: 7,
+      default_value: 'active',
+      ui_metadata: {
+        showOnList: true,
+        showOnDetail: true,
+        showOnEdit: true,
+        sortable: true,
+        options: [
+          { label: 'Active', value: 'active' },
+          { label: 'Inactive', value: 'inactive' },
+          { label: 'Pending', value: 'pending' },
+          { label: 'Archived', value: 'archived' }
+        ]
+      }
+    },
+    {
+      object_definition_id: contactObj.id,
+      api_name: 'leadSource',
+      label: 'Lead Source',
+      type: 'picklist',
+      is_required: false,
+      is_system: false,
+      is_custom: false,
+      display_order: 8,
+      ui_metadata: {
+        placeholder: 'Select lead source',
+        showOnList: false,
+        showOnDetail: true,
+        showOnEdit: true,
+        sortable: true,
+        options: [
+          { label: 'Website', value: 'website' },
+          { label: 'Referral', value: 'referral' },
+          { label: 'Social Media', value: 'social' },
+          { label: 'Conference', value: 'conference' },
+          { label: 'Cold Call', value: 'cold_call' },
+          { label: 'Other', value: 'other' }
+        ]
+      }
+    },
+    {
+      object_definition_id: contactObj.id,
+      api_name: 'isVip',
+      label: 'VIP Customer',
+      type: 'boolean',
+      is_required: false,
+      is_system: false,
+      is_custom: false,
+      display_order: 9,
+      default_value: 'false',
+      ui_metadata: {
+        helpText: 'Mark as VIP for priority support',
+        showOnList: true,
+        showOnDetail: true,
+        showOnEdit: true,
+        sortable: true
+      }
+    },
+    {
+      object_definition_id: contactObj.id,
+      api_name: 'birthDate',
+      label: 'Birth Date',
+      type: 'date',
+      is_required: false,
+      is_system: false,
+      is_custom: false,
+      display_order: 10,
+      ui_metadata: {
+        showOnList: false,
+        showOnDetail: true,
+        showOnEdit: true,
+        sortable: true,
+        format: 'yyyy-MM-dd'
+      }
+    },
+    {
+      object_definition_id: contactObj.id,
+      api_name: 'website',
+      label: 'Website',
+      type: 'url',
+      is_required: false,
+      is_system: false,
+      is_custom: false,
+      display_order: 11,
+      ui_metadata: {
+        placeholder: 'https://example.com',
+        showOnList: false,
+        showOnDetail: true,
+        showOnEdit: true,
+        sortable: false,
+        validationRules: [
+          { type: 'url', message: 'Please enter a valid URL starting with http:// or https://' }
+        ]
+      }
+    },
+    {
+      object_definition_id: contactObj.id,
+      api_name: 'mailingAddress',
+      label: 'Mailing Address',
+      type: 'textarea',
+      is_required: false,
+      is_system: false,
+      is_custom: false,
+      display_order: 12,
+      ui_metadata: {
+        placeholder: 'Enter full mailing address',
+        rows: 3,
+        showOnList: false,
+        showOnDetail: true,
+        showOnEdit: true,
+        sortable: false
+      }
+    },
+    {
+      object_definition_id: contactObj.id,
+      api_name: 'notes',
+      label: 'Notes',
+      type: 'textarea',
+      is_required: false,
+      is_system: false,
+      is_custom: false,
+      display_order: 13,
+      ui_metadata: {
+        placeholder: 'Additional notes about this contact...',
+        rows: 5,
+        showOnList: false,
+        showOnDetail: true,
+        showOnEdit: true,
+        sortable: false
+      }
+    },
+    {
+      object_definition_id: contactObj.id,
+      api_name: 'annualRevenue',
+      label: 'Annual Revenue',
+      type: 'currency',
+      is_required: false,
+      is_system: false,
+      is_custom: false,
+      display_order: 14,
+      ui_metadata: {
+        prefix: '$',
+        step: 0.01,
+        min: 0,
+        showOnList: false,
+        showOnDetail: true,
+        showOnEdit: true,
+        sortable: true
+      }
+    },
+    {
+      object_definition_id: contactObj.id,
+      api_name: 'numberOfEmployees',
+      label: 'Number of Employees',
+      type: 'integer',
+      is_required: false,
+      is_system: false,
+      is_custom: false,
+      display_order: 15,
+      ui_metadata: {
+        min: 1,
+        step: 1,
+        showOnList: false,
+        showOnDetail: true,
+        showOnEdit: true,
+        sortable: true
+      }
+    }
+  ];
+
+  // Insert or update fields
+  for (const field of fields) {
+    const existing = await knex('field_definitions')
+      .where({
+        object_definition_id: field.object_definition_id,
+        api_name: field.api_name
+      })
+      .first();
+
+    if (existing) {
+      await knex('field_definitions')
+        .where({ id: existing.id })
+        .update({
+          ...field,
+          ui_metadata: JSON.stringify(field.ui_metadata),
+          updated_at: knex.fn.now()
+        });
+      console.log(`Updated field: ${field.api_name}`);
+    } else {
+      await knex('field_definitions').insert({
+        ...field,
+        ui_metadata: JSON.stringify(field.ui_metadata),
+        created_at: knex.fn.now(),
+        updated_at: knex.fn.now()
+      });
+      console.log(`Created field: ${field.api_name}`);
+    }
+  }
+
+  console.log('Contact fields seeded successfully!');
+};

backend/src/app-builder/app-builder.module.ts

@@ -2,8 +2,10 @@ import { Module } from '@nestjs/common';
 import { AppBuilderService } from './app-builder.service';
 import { RuntimeAppController } from './runtime-app.controller';
 import { SetupAppController } from './setup-app.controller';
+import { TenantModule } from '../tenant/tenant.module';
 
 @Module({
+  imports: [TenantModule],
   providers: [AppBuilderService],
   controllers: [RuntimeAppController, SetupAppController],
   exports: [AppBuilderService],

backend/src/app-builder/app-builder.service.ts

@@ -1,44 +1,26 @@
 import { Injectable, NotFoundException } from '@nestjs/common';
-import { PrismaService } from '../prisma/prisma.service';
+import { TenantDatabaseService } from '../tenant/tenant-database.service';
+import { App } from '../models/app.model';
+import { AppPage } from '../models/app-page.model';
+import { ObjectDefinition } from '../models/object-definition.model';
 
 @Injectable()
 export class AppBuilderService {
-  constructor(private prisma: PrismaService) {}
+  constructor(private tenantDbService: TenantDatabaseService) {}
 
   // Runtime endpoints
   async getApps(tenantId: string, userId: string) {
-    // For now, return all active apps for the tenant
+    const knex = await this.tenantDbService.getTenantKnex(tenantId);
+    // For now, return all apps
     // In production, you'd filter by user permissions
-    return this.prisma.app.findMany({
-      where: {
-        tenantId,
-        isActive: true,
-      },
-      include: {
-        pages: {
-          where: { isActive: true },
-          orderBy: { sortOrder: 'asc' },
-        },
-      },
-      orderBy: { label: 'asc' },
-    });
+    return App.query(knex).withGraphFetched('pages').orderBy('label', 'asc');
   }
 
   async getApp(tenantId: string, slug: string, userId: string) {
-    const app = await this.prisma.app.findUnique({
-      where: {
-        tenantId_slug: {
-          tenantId,
-          slug,
-        },
-      },
-      include: {
-        pages: {
-          where: { isActive: true },
-          orderBy: { sortOrder: 'asc' },
-        },
-      },
-    });
+    const knex = await this.tenantDbService.getTenantKnex(tenantId);
+    const app = await App.query(knex)
+      .findOne({ slug })
+      .withGraphFetched('pages');
 
     if (!app) {
       throw new NotFoundException(`App ${slug} not found`);
@@ -53,23 +35,12 @@ export class AppBuilderService {
     pageSlug: string,
     userId: string,
   ) {
+    const knex = await this.tenantDbService.getTenantKnex(tenantId);
     const app = await this.getApp(tenantId, appSlug, userId);
 
-    const page = await this.prisma.appPage.findFirst({
-      where: {
-        appId: app.id,
-        slug: pageSlug,
-        isActive: true,
-      },
-      include: {
-        object: {
-          include: {
-            fields: {
-              where: { isActive: true },
-            },
-          },
-        },
-      },
+    const page = await AppPage.query(knex).findOne({
+      appId: app.id,
+      slug: pageSlug,
     });
 
     if (!page) {
@@ -81,31 +52,15 @@ export class AppBuilderService {
 
   // Setup endpoints
   async getAllApps(tenantId: string) {
-    return this.prisma.app.findMany({
-      where: { tenantId },
-      include: {
-        pages: {
-          orderBy: { sortOrder: 'asc' },
-        },
-      },
-      orderBy: { label: 'asc' },
-    });
+    const knex = await this.tenantDbService.getTenantKnex(tenantId);
+    return App.query(knex).withGraphFetched('pages').orderBy('label', 'asc');
   }
 
   async getAppForSetup(tenantId: string, slug: string) {
-    const app = await this.prisma.app.findUnique({
-      where: {
-        tenantId_slug: {
-          tenantId,
-          slug,
-        },
-      },
-      include: {
-        pages: {
-          orderBy: { sortOrder: 'asc' },
-        },
-      },
-    });
+    const knex = await this.tenantDbService.getTenantKnex(tenantId);
+    const app = await App.query(knex)
+      .findOne({ slug })
+      .withGraphFetched('pages');
 
     if (!app) {
       throw new NotFoundException(`App ${slug} not found`);
@@ -120,14 +75,12 @@ export class AppBuilderService {
       slug: string;
       label: string;
       description?: string;
-      icon?: string;
     },
   ) {
-    return this.prisma.app.create({
-      data: {
-        tenantId,
-        ...data,
-      },
+    const knex = await this.tenantDbService.getTenantKnex(tenantId);
+    return App.query(knex).insert({
+      ...data,
+      displayOrder: 0,
     });
   }
 
@@ -137,16 +90,12 @@ export class AppBuilderService {
     data: {
       label?: string;
       description?: string;
-      icon?: string;
-      isActive?: boolean;
     },
   ) {
+    const knex = await this.tenantDbService.getTenantKnex(tenantId);
     const app = await this.getAppForSetup(tenantId, slug);
 
-    return this.prisma.app.update({
-      where: { id: app.id },
-      data,
-    });
+    return App.query(knex).patchAndFetchById(app.id, data);
   }
 
   async createPage(
@@ -157,37 +106,19 @@ export class AppBuilderService {
       label: string;
       type: string;
       objectApiName?: string;
-      config?: any;
       sortOrder?: number;
     },
   ) {
+    const knex = await this.tenantDbService.getTenantKnex(tenantId);
     const app = await this.getAppForSetup(tenantId, appSlug);
 
-    // If objectApiName is provided, find the object
-    let objectId: string | undefined;
-    if (data.objectApiName) {
-      const obj = await this.prisma.objectDefinition.findUnique({
-        where: {
-          tenantId_apiName: {
-            tenantId,
-            apiName: data.objectApiName,
-          },
-        },
-      });
-      objectId = obj?.id;
-    }
-
-    return this.prisma.appPage.create({
-      data: {
-        appId: app.id,
-        slug: data.slug,
-        label: data.label,
-        type: data.type,
-        objectApiName: data.objectApiName,
-        objectId,
-        config: data.config,
-        sortOrder: data.sortOrder || 0,
-      },
+    return AppPage.query(knex).insert({
+      appId: app.id,
+      slug: data.slug,
+      label: data.label,
+      type: data.type,
+      objectApiName: data.objectApiName,
+      displayOrder: data.sortOrder || 0,
     });
   }
 
@@ -199,44 +130,24 @@ export class AppBuilderService {
       label?: string;
       type?: string;
       objectApiName?: string;
-      config?: any;
       sortOrder?: number;
-      isActive?: boolean;
     },
   ) {
+    const knex = await this.tenantDbService.getTenantKnex(tenantId);
     const app = await this.getAppForSetup(tenantId, appSlug);
 
-    const page = await this.prisma.appPage.findFirst({
-      where: {
-        appId: app.id,
-        slug: pageSlug,
-      },
+    const page = await AppPage.query(knex).findOne({
+      appId: app.id,
+      slug: pageSlug,
     });
 
     if (!page) {
       throw new NotFoundException(`Page ${pageSlug} not found`);
     }
 
-    // If objectApiName is provided, find the object
-    let objectId: string | undefined;
-    if (data.objectApiName) {
-      const obj = await this.prisma.objectDefinition.findUnique({
-        where: {
-          tenantId_apiName: {
-            tenantId,
-            apiName: data.objectApiName,
-          },
-        },
-      });
-      objectId = obj?.id;
-    }
-
-    return this.prisma.appPage.update({
-      where: { id: page.id },
-      data: {
-        ...data,
-        objectId,
-      },
+    return AppPage.query(knex).patchAndFetchById(page.id, {
+      ...data,
+      displayOrder: data.sortOrder,
     });
   }
 }

backend/src/app-builder/setup-app.controller.ts

@@ -59,11 +59,6 @@ export class SetupAppController {
     @Param('pageSlug') pageSlug: string,
     @Body() data: any,
   ) {
-    return this.appBuilderService.updatePage(
-      tenantId,
-      appSlug,
-      pageSlug,
-      data,
-    );
+    return this.appBuilderService.updatePage(tenantId, appSlug, pageSlug, data);
   }
 }

backend/src/app.module.ts

@@ -6,6 +6,8 @@ import { AuthModule } from './auth/auth.module';
 import { RbacModule } from './rbac/rbac.module';
 import { ObjectModule } from './object/object.module';
 import { AppBuilderModule } from './app-builder/app-builder.module';
+import { PageLayoutModule } from './page-layout/page-layout.module';
+import { VoiceModule } from './voice/voice.module';
 
 @Module({
   imports: [
@@ -18,6 +20,8 @@ import { AppBuilderModule } from './app-builder/app-builder.module';
     RbacModule,
     ObjectModule,
     AppBuilderModule,
+    PageLayoutModule,
+    VoiceModule,
   ],
 })
 export class AppModule {}

backend/src/auth/auth.controller.ts

@@ -5,6 +5,7 @@ import {
   UnauthorizedException,
   HttpCode,
   HttpStatus,
+  Req,
 } from '@nestjs/common';
 import { IsEmail, IsString, MinLength, IsOptional } from 'class-validator';
 import { AuthService } from './auth.service';
@@ -40,17 +41,33 @@ class RegisterDto {
 export class AuthController {
   constructor(private authService: AuthService) {}
 
+  private isCentralSubdomain(subdomain: string): boolean {
+    const centralSubdomains = (process.env.CENTRAL_SUBDOMAINS || 'central,admin').split(',');
+    return centralSubdomains.includes(subdomain);
+  }
+
   @HttpCode(HttpStatus.OK)
   @Post('login')
-  async login(@TenantId() tenantId: string, @Body() loginDto: LoginDto) {
-    if (!tenantId) {
-      throw new UnauthorizedException('Tenant ID is required');
+  async login(
+    @TenantId() tenantId: string,
+    @Body() loginDto: LoginDto,
+    @Req() req: any,
+  ) {
+    const subdomain = req.raw?.subdomain;
+
+ 
+    // If it's a central subdomain, tenantId is not required
+    if (!subdomain || !this.isCentralSubdomain(subdomain)) {
+      if (!tenantId) {
+        throw new UnauthorizedException('Tenant ID is required');
+      }
     }
 
     const user = await this.authService.validateUser(
       tenantId,
       loginDto.email,
       loginDto.password,
+      subdomain,
     );
 
     if (!user) {
@@ -64,9 +81,15 @@ export class AuthController {
   async register(
     @TenantId() tenantId: string,
     @Body() registerDto: RegisterDto,
+    @Req() req: any,
   ) {
-    if (!tenantId) {
-      throw new UnauthorizedException('Tenant ID is required');
+    const subdomain = req.raw?.subdomain;
+
+    // If it's a central subdomain, tenantId is not required
+    if (!subdomain || !this.isCentralSubdomain(subdomain)) {
+      if (!tenantId) {
+        throw new UnauthorizedException('Tenant ID is required');
+      }
     }
 
     const user = await this.authService.register(
@@ -75,8 +98,17 @@ export class AuthController {
       registerDto.password,
       registerDto.firstName,
       registerDto.lastName,
+      subdomain,
     );
 
     return user;
   }
+
+  @HttpCode(HttpStatus.OK)
+  @Post('logout')
+  async logout() {
+    // For stateless JWT, logout is handled on client-side
+    // This endpoint exists for consistency and potential future enhancements
+    return { message: 'Logged out successfully' };
+  }
 }

backend/src/auth/auth.module.ts

@@ -5,10 +5,12 @@ import { ConfigService } from '@nestjs/config';
 import { AuthService } from './auth.service';
 import { AuthController } from './auth.controller';
 import { JwtStrategy } from './jwt.strategy';
+import { TenantModule } from '../tenant/tenant.module';
 
 @Module({
   imports: [
     PassportModule,
+    TenantModule,
     JwtModule.registerAsync({
       inject: [ConfigService],
       useFactory: (config: ConfigService) => ({

backend/src/auth/auth.service.ts

@@ -1,48 +1,82 @@
 import { Injectable } from '@nestjs/common';
 import { JwtService } from '@nestjs/jwt';
-import { PrismaService } from '../prisma/prisma.service';
+import { TenantDatabaseService } from '../tenant/tenant-database.service';
+import { getCentralPrisma } from '../prisma/central-prisma.service';
 import * as bcrypt from 'bcrypt';
 
 @Injectable()
 export class AuthService {
   constructor(
-    private prisma: PrismaService,
+    private tenantDbService: TenantDatabaseService,
     private jwtService: JwtService,
   ) {}
 
+  private isCentralSubdomain(subdomain: string): boolean {
+    const centralSubdomains = (process.env.CENTRAL_SUBDOMAINS || 'central,admin').split(',');
+    return centralSubdomains.includes(subdomain);
+  }
+
   async validateUser(
     tenantId: string,
     email: string,
     password: string,
+    subdomain?: string,
   ): Promise<any> {
-    const user = await this.prisma.user.findUnique({
-      where: {
-        tenantId_email: {
-          tenantId,
-          email,
-        },
-      },
-      include: {
-        tenant: true,
-        userRoles: {
-          include: {
-            role: {
-              include: {
-                rolePermissions: {
-                  include: {
-                    permission: true,
-                  },
-                },
-              },
-            },
-          },
-        },
-      },
+
+    // Check if this is a central subdomain
+    if (subdomain && this.isCentralSubdomain(subdomain)) {
+      return this.validateCentralUser(email, password);
+    }
+
+    // Otherwise, validate as tenant user
+    const tenantDb = await this.tenantDbService.getTenantKnex(tenantId);
+    
+    const user = await tenantDb('users')
+      .where({ email })
+      .first();
+
+    if (!user) {
+      return null;
+    }
+
+    if (await bcrypt.compare(password, user.password)) {
+      // Load user roles and permissions
+      const userRoles = await tenantDb('user_roles')
+        .where({ userId: user.id })
+        .join('roles', 'user_roles.roleId', 'roles.id')
+        .select('roles.*');
+
+      const { password: _, ...result } = user;
+      return {
+        ...result,
+        tenantId,
+        userRoles,
+      };
+    }
+
+    return null;
+  }
+
+  private async validateCentralUser(
+    email: string,
+    password: string,
+  ): Promise<any> {
+    const centralPrisma = getCentralPrisma();
+    
+    const user = await centralPrisma.user.findUnique({
+      where: { email },
     });
 
-    if (user && (await bcrypt.compare(password, user.password))) {
-      const { password, ...result } = user;
-      return result;
+    if (!user) {
+      return null;
+    }
+
+    if (await bcrypt.compare(password, user.password)) {
+      const { password: _, ...result } = user;
+      return {
+        ...result,
+        isCentralAdmin: true,
+      };
     }
 
     return null;
@@ -52,7 +86,6 @@ export class AuthService {
     const payload = {
       sub: user.id,
       email: user.email,
-      tenantId: user.tenantId,
     };
 
     return {
@@ -62,7 +95,6 @@ export class AuthService {
         email: user.email,
         firstName: user.firstName,
         lastName: user.lastName,
-        tenantId: user.tenantId,
       },
     };
   }
@@ -73,16 +105,53 @@ export class AuthService {
     password: string,
     firstName?: string,
     lastName?: string,
+    subdomain?: string,
   ) {
+    // Check if this is a central subdomain
+    if (subdomain && this.isCentralSubdomain(subdomain)) {
+      return this.registerCentralUser(email, password, firstName, lastName);
+    }
+
+    // Otherwise, register as tenant user
+    const tenantDb = await this.tenantDbService.getTenantKnex(tenantId);
+    
     const hashedPassword = await bcrypt.hash(password, 10);
 
-    const user = await this.prisma.user.create({
+    const [userId] = await tenantDb('users').insert({
+      email,
+      password: hashedPassword,
+      firstName,
+      lastName,
+      isActive: true,
+      created_at: new Date(),
+      updated_at: new Date(),
+    });
+
+    const user = await tenantDb('users')
+      .where({ id: userId })
+      .first();
+
+    const { password: _, ...result } = user;
+    return result;
+  }
+
+  private async registerCentralUser(
+    email: string,
+    password: string,
+    firstName?: string,
+    lastName?: string,
+  ) {
+    const centralPrisma = getCentralPrisma();
+    
+    const hashedPassword = await bcrypt.hash(password, 10);
+
+    const user = await centralPrisma.user.create({
       data: {
-        tenantId,
         email,
         password: hashedPassword,
-        firstName,
-        lastName,
+        firstName: firstName || null,
+        lastName: lastName || null,
+        isActive: true,
       },
     });
 

backend/src/main.ts

@@ -3,13 +3,15 @@ import {
   FastifyAdapter,
   NestFastifyApplication,
 } from '@nestjs/platform-fastify';
-import { ValidationPipe } from '@nestjs/common';
+import { ValidationPipe, Logger } from '@nestjs/common';
 import { AppModule } from './app.module';
+import { VoiceService } from './voice/voice.service';
+import { AudioConverterService } from './voice/audio-converter.service';
 
 async function bootstrap() {
   const app = await NestFactory.create<NestFastifyApplication>(
     AppModule,
-    new FastifyAdapter(),
+    new FastifyAdapter({ logger: true }),
   );
 
   // Global validation pipe
@@ -33,6 +35,145 @@ async function bootstrap() {
   const port = process.env.PORT || 3000;
   await app.listen(port, '0.0.0.0');
 
+  // After app is listening, register WebSocket handler
+  const fastifyInstance = app.getHttpAdapter().getInstance();
+  const logger = new Logger('MediaStreamWS');
+  const voiceService = app.get(VoiceService);
+  const audioConverter = app.get(AudioConverterService);
+  
+  const WebSocketServer = require('ws').Server;
+  const wss = new WebSocketServer({ noServer: true });
+
+  // Handle WebSocket upgrades at the server level
+  const server = (fastifyInstance.server as any);
+  
+  // Track active Media Streams connections: streamSid -> WebSocket
+  const mediaStreams: Map<string, any> = new Map();
+  
+  server.on('upgrade', (request: any, socket: any, head: any) => {
+    if (request.url === '/api/voice/media-stream') {
+      logger.log('=== MEDIA STREAM WEBSOCKET UPGRADE REQUEST ===');
+      logger.log(`Path: ${request.url}`);
+      
+      wss.handleUpgrade(request, socket, head, (ws: any) => {
+        logger.log('=== MEDIA STREAM WEBSOCKET UPGRADED SUCCESSFULLY ===');
+        handleMediaStreamSocket(ws);
+      });
+    }
+  });
+  
+  async function handleMediaStreamSocket(ws: any) {
+    let streamSid: string | null = null;
+    let callSid: string | null = null;
+    let tenantDomain: string | null = null;
+    let mediaPacketCount = 0;
+
+    ws.on('message', async (message: Buffer) => {
+      try {
+        const msg = JSON.parse(message.toString());
+
+        switch (msg.event) {
+          case 'connected':
+            logger.log('=== MEDIA STREAM EVENT: CONNECTED ===');
+            logger.log(`Protocol: ${msg.protocol}`);
+            logger.log(`Version: ${msg.version}`);
+            break;
+
+          case 'start':
+            streamSid = msg.streamSid;
+            callSid = msg.start.callSid;
+            tenantDomain = msg.start.customParameters?.tenantId || 'tenant1';
+
+            logger.log(`=== MEDIA STREAM EVENT: START ===`);
+            logger.log(`StreamSid: ${streamSid}`);
+            logger.log(`CallSid: ${callSid}`);
+            logger.log(`Tenant: ${tenantDomain}`);
+            logger.log(`MediaFormat: ${JSON.stringify(msg.start.mediaFormat)}`);
+
+            mediaStreams.set(streamSid, ws);
+            logger.log(`Stored WebSocket for streamSid: ${streamSid}. Total active streams: ${mediaStreams.size}`);
+
+            // Initialize OpenAI Realtime connection
+            logger.log(`Initializing OpenAI Realtime for call ${callSid}...`);
+            try {
+              await voiceService.initializeOpenAIRealtime({
+                callSid,
+                tenantId: tenantDomain,
+                userId: msg.start.customParameters?.userId || 'system',
+              });
+              logger.log(`✓ OpenAI Realtime initialized for call ${callSid}`);
+            } catch (error: any) {
+              logger.error(`Failed to initialize OpenAI: ${error.message}`);
+            }
+            break;
+
+          case 'media':
+            mediaPacketCount++;
+            // Only log every 500 packets to reduce noise
+            if (mediaPacketCount % 500 === 0) {
+              logger.log(`Received media packet #${mediaPacketCount} for StreamSid: ${streamSid}`);
+            }
+
+            if (!callSid || !tenantDomain) {
+              logger.warn('Received media before start event');
+              break;
+            }
+
+            try {
+              // Convert Twilio audio (μ-law 8kHz) to OpenAI format (PCM16 24kHz)
+              const twilioAudio = msg.media.payload;
+              const openaiAudio = audioConverter.twilioToOpenAI(twilioAudio);
+
+              // Send audio to OpenAI Realtime API
+              await voiceService.sendAudioToOpenAI(callSid, openaiAudio);
+            } catch (error: any) {
+              logger.error(`Error processing media: ${error.message}`);
+            }
+            break;
+
+          case 'stop':
+            logger.log(`=== MEDIA STREAM EVENT: STOP ===`);
+            logger.log(`StreamSid: ${streamSid}`);
+            logger.log(`Total media packets received: ${mediaPacketCount}`);
+
+            if (streamSid) {
+              mediaStreams.delete(streamSid);
+              logger.log(`Removed WebSocket for streamSid: ${streamSid}`);
+            }
+
+            // Clean up OpenAI connection
+            if (callSid) {
+              try {
+                logger.log(`Cleaning up OpenAI connection for call ${callSid}...`);
+                await voiceService.cleanupOpenAIConnection(callSid);
+                logger.log(`✓ OpenAI connection cleaned up`);
+              } catch (error: any) {
+                logger.error(`Failed to cleanup OpenAI: ${error.message}`);
+              }
+            }
+            break;
+
+          default:
+            logger.debug(`Unknown media stream event: ${msg.event}`);
+        }
+      } catch (error: any) {
+        logger.error(`Error processing media stream message: ${error.message}`);
+      }
+    });
+
+    ws.on('close', () => {
+      logger.log(`=== MEDIA STREAM WEBSOCKET CLOSED ===`);
+      if (streamSid) {
+        mediaStreams.delete(streamSid);
+      }
+    });
+
+    ws.on('error', (error: Error) => {
+      logger.error(`=== MEDIA STREAM WEBSOCKET ERROR ===`);
+      logger.error(`Error message: ${error.message}`);
+    });
+  }
+
   console.log(`🚀 Application is running on: http://localhost:${port}/api`);
 }
 

backend/src/migration/custom-migration.service.ts

@@ -0,0 +1,306 @@
+import { Injectable, Logger } from '@nestjs/common';
+import { Knex } from 'knex';
+
+export interface CustomMigrationRecord {
+  id: string;
+  tenantId: string;
+  name: string;
+  description: string;
+  type: 'create_table' | 'add_column' | 'alter_column' | 'add_index' | 'drop_table' | 'custom';
+  sql: string;
+  status: 'pending' | 'executed' | 'failed';
+  executedAt?: Date;
+  error?: string;
+  createdAt: Date;
+  updatedAt: Date;
+}
+
+@Injectable()
+export class CustomMigrationService {
+  private readonly logger = new Logger(CustomMigrationService.name);
+
+  /**
+   * Generate SQL to create a table with standard fields
+   */
+  generateCreateTableSQL(
+    tableName: string,
+    fields: {
+      apiName: string;
+      type: string;
+      isRequired?: boolean;
+      isUnique?: boolean;
+      defaultValue?: string;
+    }[] = [],
+  ): string {
+    // Start with standard fields
+    const columns: string[] = [
+      '`id` VARCHAR(36) PRIMARY KEY',
+      '`ownerId` VARCHAR(36)',
+      '`name` VARCHAR(255)',
+      '`created_at` TIMESTAMP DEFAULT CURRENT_TIMESTAMP',
+      '`updated_at` TIMESTAMP DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP',
+    ];
+
+    // Add custom fields
+    for (const field of fields) {
+      const column = this.fieldToColumn(field);
+      columns.push(column);
+    }
+
+    // Add foreign key and index for ownerId
+    columns.push('INDEX `idx_owner` (`ownerId`)');
+
+    return `CREATE TABLE IF NOT EXISTS \`${tableName}\` (
+  ${columns.join(',\n  ')}
+)`;
+  }
+
+  /**
+   * Convert field definition to SQL column definition
+   */
+  private fieldToColumn(field: {
+    apiName: string;
+    type: string;
+    isRequired?: boolean;
+    isUnique?: boolean;
+    defaultValue?: string;
+  }): string {
+    const columnName = field.apiName;
+    let columnDef = `\`${columnName}\``;
+
+    // Map field types to SQL types
+    switch (field.type.toUpperCase()) {
+      case 'TEXT':
+      case 'STRING':
+        columnDef += ' VARCHAR(255)';
+        break;
+      case 'LONG_TEXT':
+        columnDef += ' LONGTEXT';
+        break;
+      case 'NUMBER':
+      case 'DECIMAL':
+        columnDef += ' DECIMAL(18, 2)';
+        break;
+      case 'INTEGER':
+        columnDef += ' INT';
+        break;
+      case 'BOOLEAN':
+        columnDef += ' BOOLEAN DEFAULT FALSE';
+        break;
+      case 'DATE':
+        columnDef += ' DATE';
+        break;
+      case 'DATE_TIME':
+        columnDef += ' DATETIME';
+        break;
+      case 'EMAIL':
+        columnDef += ' VARCHAR(255)';
+        break;
+      case 'URL':
+        columnDef += ' VARCHAR(2048)';
+        break;
+      case 'PHONE':
+        columnDef += ' VARCHAR(20)';
+        break;
+      case 'CURRENCY':
+        columnDef += ' DECIMAL(18, 2)';
+        break;
+      case 'PERCENT':
+        columnDef += ' DECIMAL(5, 2)';
+        break;
+      case 'PICKLIST':
+      case 'MULTI_PICKLIST':
+        columnDef += ' VARCHAR(255)';
+        break;
+      case 'LOOKUP':
+      case 'BELONGS_TO':
+        columnDef += ' VARCHAR(36)';
+        break;
+      default:
+        columnDef += ' VARCHAR(255)';
+    }
+
+    // Add constraints
+    if (field.isRequired) {
+      columnDef += ' NOT NULL';
+    } else {
+      columnDef += ' NULL';
+    }
+
+    if (field.isUnique) {
+      columnDef += ' UNIQUE';
+    }
+
+    if (field.defaultValue !== undefined && field.defaultValue !== null) {
+      columnDef += ` DEFAULT '${field.defaultValue}'`;
+    }
+
+    return columnDef;
+  }
+
+  /**
+   * Create a custom migration record in the database
+   */
+  async createMigrationRecord(
+    tenantKnex: Knex,
+    data: {
+      tenantId: string;
+      name: string;
+      description: string;
+      type: 'create_table' | 'add_column' | 'alter_column' | 'add_index' | 'drop_table' | 'custom';
+      sql: string;
+    },
+  ): Promise<CustomMigrationRecord> {
+    // Ensure custom_migrations table exists
+    await this.ensureMigrationsTable(tenantKnex);
+
+    const id = require('crypto').randomUUID();
+    const now = new Date();
+
+    await tenantKnex('custom_migrations').insert({
+      id,
+      tenantId: data.tenantId,
+      name: data.name,
+      description: data.description,
+      type: data.type,
+      sql: data.sql,
+      status: 'pending',
+      created_at: now,
+      updated_at: now,
+    });
+
+    return tenantKnex('custom_migrations').where({ id }).first();
+  }
+
+  /**
+   * Execute a pending migration and update its status
+   */
+  async executeMigration(
+    tenantKnex: Knex,
+    migrationId: string,
+  ): Promise<CustomMigrationRecord> {
+    try {
+      // Get the migration record
+      const migration = await tenantKnex('custom_migrations')
+        .where({ id: migrationId })
+        .first();
+
+      if (!migration) {
+        throw new Error(`Migration ${migrationId} not found`);
+      }
+
+      if (migration.status === 'executed') {
+        this.logger.log(`Migration ${migrationId} already executed`);
+        return migration;
+      }
+
+      // Execute the SQL
+      this.logger.log(`Executing migration: ${migration.name}`);
+      await tenantKnex.raw(migration.sql);
+
+      // Update status
+      const now = new Date();
+      await tenantKnex('custom_migrations')
+        .where({ id: migrationId })
+        .update({
+          status: 'executed',
+          executedAt: now,
+          updated_at: now,
+        });
+
+      this.logger.log(`Migration ${migration.name} executed successfully`);
+      return tenantKnex('custom_migrations').where({ id: migrationId }).first();
+    } catch (error) {
+      this.logger.error(`Failed to execute migration ${migrationId}:`, error);
+
+      // Update status with error
+      const now = new Date();
+      await tenantKnex('custom_migrations')
+        .where({ id: migrationId })
+        .update({
+          status: 'failed',
+          error: error.message,
+          updated_at: now,
+        });
+
+      throw error;
+    }
+  }
+
+  /**
+   * Create and execute a migration in one step
+   */
+  async createAndExecuteMigration(
+    tenantKnex: Knex,
+    tenantId: string,
+    data: {
+      name: string;
+      description: string;
+      type: 'create_table' | 'add_column' | 'alter_column' | 'add_index' | 'drop_table' | 'custom';
+      sql: string;
+    },
+  ): Promise<CustomMigrationRecord> {
+    // Create the migration record
+    const migration = await this.createMigrationRecord(tenantKnex, {
+      tenantId,
+      ...data,
+    });
+
+    // Execute it immediately
+    return this.executeMigration(tenantKnex, migration.id);
+  }
+
+  /**
+   * Ensure the custom_migrations table exists in the tenant database
+   */
+  private async ensureMigrationsTable(tenantKnex: Knex): Promise<void> {
+    const hasTable = await tenantKnex.schema.hasTable('custom_migrations');
+
+    if (!hasTable) {
+      await tenantKnex.schema.createTable('custom_migrations', (table) => {
+        table.uuid('id').primary();
+        table.uuid('tenantId').notNullable();
+        table.string('name', 255).notNullable();
+        table.text('description');
+        table.enum('type', ['create_table', 'add_column', 'alter_column', 'add_index', 'drop_table', 'custom']).notNullable();
+        table.text('sql').notNullable();
+        table.enum('status', ['pending', 'executed', 'failed']).defaultTo('pending');
+        table.timestamp('executedAt').nullable();
+        table.text('error').nullable();
+        table.timestamps(true, true);
+
+        table.index(['tenantId']);
+        table.index(['status']);
+        table.index(['created_at']);
+      });
+
+      this.logger.log('Created custom_migrations table');
+    }
+  }
+
+  /**
+   * Get all migrations for a tenant
+   */
+  async getMigrations(
+    tenantKnex: Knex,
+    tenantId: string,
+    filter?: {
+      status?: 'pending' | 'executed' | 'failed';
+      type?: string;
+    },
+  ): Promise<CustomMigrationRecord[]> {
+    await this.ensureMigrationsTable(tenantKnex);
+
+    let query = tenantKnex('custom_migrations').where({ tenantId });
+
+    if (filter?.status) {
+      query = query.where({ status: filter.status });
+    }
+
+    if (filter?.type) {
+      query = query.where({ type: filter.type });
+    }
+
+    return query.orderBy('created_at', 'asc');
+  }
+}

backend/src/migration/migration.module.ts

@@ -0,0 +1,10 @@
+import { Module } from '@nestjs/common';
+import { CustomMigrationService } from './custom-migration.service';
+import { TenantModule } from '../tenant/tenant.module';
+
+@Module({
+  imports: [TenantModule],
+  providers: [CustomMigrationService],
+  exports: [CustomMigrationService],
+})
+export class MigrationModule {}

backend/src/models/account.model.ts

@@ -0,0 +1,23 @@
+import { BaseModel } from './base.model';
+
+export class Account extends BaseModel {
+  static tableName = 'accounts';
+
+  id!: string;
+  name!: string;
+  website?: string;
+  phone?: string;
+  industry?: string;
+  ownerId?: string;
+
+  static relationMappings = {
+    owner: {
+      relation: BaseModel.BelongsToOneRelation,
+      modelClass: 'user.model',
+      join: {
+        from: 'accounts.ownerId',
+        to: 'users.id',
+      },
+    },
+  };
+}

backend/src/models/app-page.model.ts

@@ -0,0 +1,25 @@
+import { BaseModel } from './base.model';
+import { App } from './app.model';
+
+export class AppPage extends BaseModel {
+  static tableName = 'app_pages';
+
+  id!: string;
+  appId!: string;
+  slug!: string;
+  label!: string;
+  type!: string;
+  objectApiName?: string;
+  displayOrder!: number;
+
+  static relationMappings = {
+    app: {
+      relation: BaseModel.BelongsToOneRelation,
+      modelClass: App,
+      join: {
+        from: 'app_pages.appId',
+        to: 'apps.id',
+      },
+    },
+  };
+}

backend/src/models/app.model.ts

@@ -0,0 +1,23 @@
+import { BaseModel } from './base.model';
+import { AppPage } from './app-page.model';
+
+export class App extends BaseModel {
+  static tableName = 'apps';
+
+  id!: string;
+  slug!: string;
+  label!: string;
+  description?: string;
+  displayOrder!: number;
+
+  static relationMappings = {
+    pages: {
+      relation: BaseModel.HasManyRelation,
+      modelClass: AppPage,
+      join: {
+        from: 'apps.id',
+        to: 'app_pages.appId',
+      },
+    },
+  };
+}

backend/src/models/base.model.ts

@@ -0,0 +1,18 @@
+import { Model, ModelOptions, QueryContext, snakeCaseMappers } from 'objection';
+
+export class BaseModel extends Model {
+  static columnNameMappers = snakeCaseMappers();
+
+  id: string;
+  createdAt: Date;
+  updatedAt: Date;
+
+  $beforeInsert(queryContext: QueryContext) {
+    this.createdAt = new Date();
+    this.updatedAt = new Date();
+  }
+
+  $beforeUpdate(opt: ModelOptions, queryContext: QueryContext) {
+    this.updatedAt = new Date();
+  }
+}

backend/src/models/central.model.ts

@@ -0,0 +1,114 @@
+import { Model, ModelOptions, QueryContext } from 'objection';
+import { randomUUID } from 'crypto';
+
+/**
+ * Central database models using Objection.js
+ * These models work with the central database (not tenant databases)
+ */
+
+export class CentralTenant extends Model {
+  static tableName = 'tenants';
+
+  id: string;
+  name: string;
+  slug: string;
+  dbHost: string;
+  dbPort: number;
+  dbName: string;
+  dbUsername: string;
+  dbPassword: string;
+  status: string;
+  createdAt: Date;
+  updatedAt: Date;
+
+  // Relations
+  domains?: CentralDomain[];
+
+  $beforeInsert(queryContext: QueryContext) {
+    this.id = this.id || randomUUID();
+    // Auto-generate slug from name if not provided
+    if (!this.slug && this.name) {
+      this.slug = this.name.toLowerCase().replace(/[^a-z0-9]+/g, '-').replace(/^-|-$/g, '');
+    }
+    this.createdAt = new Date();
+    this.updatedAt = new Date();
+  }
+
+  $beforeUpdate(opt: ModelOptions, queryContext: QueryContext) {
+    this.updatedAt = new Date();
+  }
+
+  static get relationMappings() {
+    return {
+      domains: {
+        relation: Model.HasManyRelation,
+        modelClass: CentralDomain,
+        join: {
+          from: 'tenants.id',
+          to: 'domains.tenantId',
+        },
+      },
+    };
+  }
+}
+
+export class CentralDomain extends Model {
+  static tableName = 'domains';
+
+  id: string;
+  domain: string;
+  tenantId: string;
+  isPrimary: boolean;
+  createdAt: Date;
+  updatedAt: Date;
+
+  // Relations
+  tenant?: CentralTenant;
+
+  $beforeInsert(queryContext: QueryContext) {
+    this.id = this.id || randomUUID();
+    this.createdAt = new Date();
+    this.updatedAt = new Date();
+  }
+
+  $beforeUpdate(opt: ModelOptions, queryContext: QueryContext) {
+    this.updatedAt = new Date();
+  }
+
+  static get relationMappings() {
+    return {
+      tenant: {
+        relation: Model.BelongsToOneRelation,
+        modelClass: CentralTenant,
+        join: {
+          from: 'domains.tenantId',
+          to: 'tenants.id',
+        },
+      },
+    };
+  }
+}
+
+export class CentralUser extends Model {
+  static tableName = 'users';
+
+  id: string;
+  email: string;
+  password: string;
+  firstName: string | null;
+  lastName: string | null;
+  role: string;
+  isActive: boolean;
+  createdAt: Date;
+  updatedAt: Date;
+
+  $beforeInsert(queryContext: QueryContext) {
+    this.id = this.id || randomUUID();
+    this.createdAt = new Date();
+    this.updatedAt = new Date();
+  }
+
+  $beforeUpdate(opt: ModelOptions, queryContext: QueryContext) {
+    this.updatedAt = new Date();
+  }
+}

backend/src/models/field-definition.model.ts

@@ -0,0 +1,86 @@
+import { BaseModel } from './base.model';
+
+export interface FieldOption {
+  label: string;
+  value: string | number | boolean;
+}
+
+export interface ValidationRule {
+  type: 'required' | 'min' | 'max' | 'email' | 'url' | 'pattern' | 'custom';
+  value?: any;
+  message?: string;
+}
+
+export interface UIMetadata {
+  // Display properties
+  placeholder?: string;
+  helpText?: string;
+  
+  // View visibility
+  showOnList?: boolean;
+  showOnDetail?: boolean;
+  showOnEdit?: boolean;
+  sortable?: boolean;
+  
+  // Field type specific options
+  options?: FieldOption[]; // For select, multi-select
+  rows?: number; // For textarea
+  min?: number; // For number, date
+  max?: number; // For number, date
+  step?: number; // For number
+  accept?: string; // For file/image
+  relationDisplayField?: string; // Which field to display for relations
+  
+  // Formatting
+  format?: string; // Date format, number format, etc.
+  prefix?: string; // Currency symbol, etc.
+  suffix?: string;
+  
+  // Validation
+  validationRules?: ValidationRule[];
+  
+  // Advanced
+  dependsOn?: string[]; // Field dependencies
+  computedValue?: string; // Formula for computed fields
+}
+
+export class FieldDefinition extends BaseModel {
+  static tableName = 'field_definitions';
+
+  id!: string;
+  objectDefinitionId!: string;
+  apiName!: string;
+  label!: string;
+  type!: string;
+  length?: number;
+  precision?: number;
+  scale?: number;
+  referenceObject?: string;
+  defaultValue?: string;
+  description?: string;
+  isRequired!: boolean;
+  isUnique!: boolean;
+  isSystem!: boolean;
+  isCustom!: boolean;
+  displayOrder!: number;
+  uiMetadata?: UIMetadata;
+
+  static relationMappings = {
+    objectDefinition: {
+      relation: BaseModel.BelongsToOneRelation,
+      modelClass: 'object-definition.model',
+      join: {
+        from: 'field_definitions.objectDefinitionId',
+        to: 'object_definitions.id',
+      },
+    },
+    rolePermissions: {
+      relation: BaseModel.HasManyRelation,
+      modelClass: () => require('./role-field-permission.model').RoleFieldPermission,
+      join: {
+        from: 'field_definitions.id',
+        to: 'role_field_permissions.fieldDefinitionId',
+      },
+    },
+  };
+}

backend/src/models/object-definition.model.ts

@@ -0,0 +1,59 @@
+import { BaseModel } from './base.model';
+
+export class ObjectDefinition extends BaseModel {
+  static tableName = 'object_definitions';
+
+  id: string;
+  apiName: string;
+  label: string;
+  pluralLabel?: string;
+  description?: string;
+  isSystem: boolean;
+  isCustom: boolean;
+  orgWideDefault: 'private' | 'public_read' | 'public_read_write';
+  createdAt: Date;
+  updatedAt: Date;
+  fields?: any[];
+  rolePermissions?: any[];
+
+  static get jsonSchema() {
+    return {
+      type: 'object',
+      required: ['apiName', 'label'],
+      properties: {
+        id: { type: 'string' },
+        apiName: { type: 'string' },
+        label: { type: 'string' },
+        pluralLabel: { type: 'string' },
+        description: { type: 'string' },
+        isSystem: { type: 'boolean' },
+        isCustom: { type: 'boolean' },
+        orgWideDefault: { type: 'string', enum: ['private', 'public_read', 'public_read_write'] },
+      },
+    };
+  }
+
+  static get relationMappings() {
+    const { FieldDefinition } = require('./field-definition.model');
+    const { RoleObjectPermission } = require('./role-object-permission.model');
+
+    return {
+      fields: {
+        relation: BaseModel.HasManyRelation,
+        modelClass: FieldDefinition,
+        join: {
+          from: 'object_definitions.id',
+          to: 'field_definitions.objectDefinitionId',
+        },
+      },
+      rolePermissions: {
+        relation: BaseModel.HasManyRelation,
+        modelClass: RoleObjectPermission,
+        join: {
+          from: 'object_definitions.id',
+          to: 'role_object_permissions.objectDefinitionId',
+        },
+      },
+    };
+  }
+}

backend/src/models/permission.model.ts

@@ -0,0 +1,25 @@
+import { BaseModel } from './base.model';
+
+export class Permission extends BaseModel {
+  static tableName = 'permissions';
+
+  id!: string;
+  name!: string;
+  guardName!: string;
+  description?: string;
+
+  static relationMappings = {
+    roles: {
+      relation: BaseModel.ManyToManyRelation,
+      modelClass: 'role.model',
+      join: {
+        from: 'permissions.id',
+        through: {
+          from: 'role_permissions.permissionId',
+          to: 'role_permissions.roleId',
+        },
+        to: 'roles.id',
+      },
+    },
+  };
+}

backend/src/models/record-share.model.ts

@@ -0,0 +1,113 @@
+import { BaseModel } from './base.model';
+
+export interface RecordShareAccessLevel {
+  canRead: boolean;
+  canEdit: boolean;
+  canDelete: boolean;
+}
+
+export class RecordShare extends BaseModel {
+  static tableName = 'record_shares';
+
+  // Don't use snake_case mapping since DB columns are already camelCase
+  static get columnNameMappers() {
+    return {
+      parse(obj: any) {
+        return obj;
+      },
+      format(obj: any) {
+        return obj;
+      },
+    };
+  }
+
+  // Don't auto-set timestamps - let DB defaults handle them
+  $beforeInsert() {
+    // Don't call super - skip BaseModel's timestamp logic
+  }
+
+  $beforeUpdate() {
+    // Don't call super - skip BaseModel's timestamp logic
+  }
+
+  id!: string;
+  objectDefinitionId!: string;
+  recordId!: string;
+  granteeUserId!: string;
+  grantedByUserId!: string;
+  accessLevel!: RecordShareAccessLevel;
+  expiresAt?: Date;
+  revokedAt?: Date;
+  createdAt!: Date;
+  updatedAt!: Date;
+
+  static get jsonSchema() {
+    return {
+      type: 'object',
+      required: ['objectDefinitionId', 'recordId', 'granteeUserId', 'grantedByUserId', 'accessLevel'],
+      properties: {
+        id: { type: 'string' },
+        objectDefinitionId: { type: 'string' },
+        recordId: { type: 'string' },
+        granteeUserId: { type: 'string' },
+        grantedByUserId: { type: 'string' },
+        accessLevel: {
+          type: 'object',
+          properties: {
+            canRead: { type: 'boolean' },
+            canEdit: { type: 'boolean' },
+            canDelete: { type: 'boolean' },
+          },
+        },
+        expiresAt: {
+          anyOf: [
+            { type: 'string', format: 'date-time' },
+            { type: 'null' },
+            { type: 'object' } // Allow Date objects
+          ]
+        },
+        revokedAt: {
+          anyOf: [
+            { type: 'string', format: 'date-time' },
+            { type: 'null' },
+            { type: 'object' } // Allow Date objects
+          ]
+        },
+        createdAt: { type: ['string', 'object'], format: 'date-time' },
+        updatedAt: { type: ['string', 'object'], format: 'date-time' },
+      },
+    };
+  }
+
+  static get relationMappings() {
+    const { ObjectDefinition } = require('./object-definition.model');
+    const { User } = require('./user.model');
+
+    return {
+      objectDefinition: {
+        relation: BaseModel.BelongsToOneRelation,
+        modelClass: ObjectDefinition,
+        join: {
+          from: 'record_shares.objectDefinitionId',
+          to: 'object_definitions.id',
+        },
+      },
+      granteeUser: {
+        relation: BaseModel.BelongsToOneRelation,
+        modelClass: User,
+        join: {
+          from: 'record_shares.granteeUserId',
+          to: 'users.id',
+        },
+      },
+      grantedByUser: {
+        relation: BaseModel.BelongsToOneRelation,
+        modelClass: User,
+        join: {
+          from: 'record_shares.grantedByUserId',
+          to: 'users.id',
+        },
+      },
+    };
+  }
+}

backend/src/models/role-field-permission.model.ts

@@ -0,0 +1,51 @@
+import { BaseModel } from './base.model';
+
+export class RoleFieldPermission extends BaseModel {
+  static tableName = 'role_field_permissions';
+
+  id!: string;
+  roleId!: string;
+  fieldDefinitionId!: string;
+  canRead!: boolean;
+  canEdit!: boolean;
+  createdAt!: Date;
+  updatedAt!: Date;
+
+  static get jsonSchema() {
+    return {
+      type: 'object',
+      required: ['roleId', 'fieldDefinitionId'],
+      properties: {
+        id: { type: 'string' },
+        roleId: { type: 'string' },
+        fieldDefinitionId: { type: 'string' },
+        canRead: { type: 'boolean' },
+        canEdit: { type: 'boolean' },
+      },
+    };
+  }
+
+  static get relationMappings() {
+    const { Role } = require('./role.model');
+    const { FieldDefinition } = require('./field-definition.model');
+
+    return {
+      role: {
+        relation: BaseModel.BelongsToOneRelation,
+        modelClass: Role,
+        join: {
+          from: 'role_field_permissions.roleId',
+          to: 'roles.id',
+        },
+      },
+      fieldDefinition: {
+        relation: BaseModel.BelongsToOneRelation,
+        modelClass: FieldDefinition,
+        join: {
+          from: 'role_field_permissions.fieldDefinitionId',
+          to: 'field_definitions.id',
+        },
+      },
+    };
+  }
+}

backend/src/models/role-object-permission.model.ts

@@ -0,0 +1,59 @@
+import { BaseModel } from './base.model';
+
+export class RoleObjectPermission extends BaseModel {
+  static tableName = 'role_object_permissions';
+
+  id!: string;
+  roleId!: string;
+  objectDefinitionId!: string;
+  canCreate!: boolean;
+  canRead!: boolean;
+  canEdit!: boolean;
+  canDelete!: boolean;
+  canViewAll!: boolean;
+  canModifyAll!: boolean;
+  createdAt!: Date;
+  updatedAt!: Date;
+
+  static get jsonSchema() {
+    return {
+      type: 'object',
+      required: ['roleId', 'objectDefinitionId'],
+      properties: {
+        id: { type: 'string' },
+        roleId: { type: 'string' },
+        objectDefinitionId: { type: 'string' },
+        canCreate: { type: 'boolean' },
+        canRead: { type: 'boolean' },
+        canEdit: { type: 'boolean' },
+        canDelete: { type: 'boolean' },
+        canViewAll: { type: 'boolean' },
+        canModifyAll: { type: 'boolean' },
+      },
+    };
+  }
+
+  static get relationMappings() {
+    const { Role } = require('./role.model');
+    const { ObjectDefinition } = require('./object-definition.model');
+
+    return {
+      role: {
+        relation: BaseModel.BelongsToOneRelation,
+        modelClass: Role,
+        join: {
+          from: 'role_object_permissions.roleId',
+          to: 'roles.id',
+        },
+      },
+      objectDefinition: {
+        relation: BaseModel.BelongsToOneRelation,
+        modelClass: ObjectDefinition,
+        join: {
+          from: 'role_object_permissions.objectDefinitionId',
+          to: 'object_definitions.id',
+        },
+      },
+    };
+  }
+}

backend/src/models/role-permission.model.ts

@@ -0,0 +1,28 @@
+import { BaseModel } from './base.model';
+
+export class RolePermission extends BaseModel {
+  static tableName = 'role_permissions';
+
+  id!: string;
+  roleId!: string;
+  permissionId!: string;
+
+  static relationMappings = {
+    role: {
+      relation: BaseModel.BelongsToOneRelation,
+      modelClass: 'role.model',
+      join: {
+        from: 'role_permissions.roleId',
+        to: 'roles.id',
+      },
+    },
+    permission: {
+      relation: BaseModel.BelongsToOneRelation,
+      modelClass: 'permission.model',
+      join: {
+        from: 'role_permissions.permissionId',
+        to: 'permissions.id',
+      },
+    },
+  };
+}

backend/src/models/role.model.ts

@@ -0,0 +1,84 @@
+import { BaseModel } from './base.model';
+
+export class Role extends BaseModel {
+  static tableName = 'roles';
+
+  id: string;
+  name: string;
+  guardName: string;
+  description?: string;
+  createdAt: Date;
+  updatedAt: Date;
+
+  static get jsonSchema() {
+    return {
+      type: 'object',
+      required: ['name'],
+      properties: {
+        id: { type: 'string' },
+        name: { type: 'string' },
+        guardName: { type: 'string' },
+        description: { type: 'string' },
+      },
+    };
+  }
+
+  static get relationMappings() {
+    const { RolePermission } = require('./role-permission.model');
+    const { Permission } = require('./permission.model');
+    const { User } = require('./user.model');
+    const { RoleObjectPermission } = require('./role-object-permission.model');
+    const { RoleFieldPermission } = require('./role-field-permission.model');
+
+    return {
+      rolePermissions: {
+        relation: BaseModel.HasManyRelation,
+        modelClass: RolePermission,
+        join: {
+          from: 'roles.id',
+          to: 'role_permissions.roleId',
+        },
+      },
+      permissions: {
+        relation: BaseModel.ManyToManyRelation,
+        modelClass: Permission,
+        join: {
+          from: 'roles.id',
+          through: {
+            from: 'role_permissions.roleId',
+            to: 'role_permissions.permissionId',
+          },
+          to: 'permissions.id',
+        },
+      },
+      users: {
+        relation: BaseModel.ManyToManyRelation,
+        modelClass: User,
+        join: {
+          from: 'roles.id',
+          through: {
+            from: 'user_roles.roleId',
+            to: 'user_roles.userId',
+          },
+          to: 'users.id',
+        },
+      },
+      objectPermissions: {
+        relation: BaseModel.HasManyRelation,
+        modelClass: RoleObjectPermission,
+        join: {
+          from: 'roles.id',
+          to: 'role_object_permissions.roleId',
+        },
+      },
+      fieldPermissions: {
+        relation: BaseModel.HasManyRelation,
+        modelClass: RoleFieldPermission,
+        join: {
+          from: 'roles.id',
+          to: 'role_field_permissions.roleId',
+        },
+      },
+    };
+  }
+}

backend/src/models/user-role.model.ts

@@ -0,0 +1,28 @@
+import { BaseModel } from './base.model';
+
+export class UserRole extends BaseModel {
+  static tableName = 'user_roles';
+
+  id!: string;
+  userId!: string;
+  roleId!: string;
+
+  static relationMappings = {
+    user: {
+      relation: BaseModel.BelongsToOneRelation,
+      modelClass: 'user.model',
+      join: {
+        from: 'user_roles.userId',
+        to: 'users.id',
+      },
+    },
+    role: {
+      relation: BaseModel.BelongsToOneRelation,
+      modelClass: 'role.model',
+      join: {
+        from: 'user_roles.roleId',
+        to: 'roles.id',
+      },
+    },
+  };
+}

backend/src/models/user.model.ts

@@ -0,0 +1,57 @@
+import { BaseModel } from './base.model';
+
+export class User extends BaseModel {
+  static tableName = 'users';
+
+  id: string;
+  email: string;
+  password: string;
+  firstName?: string;
+  lastName?: string;
+  isActive: boolean;
+  createdAt: Date;
+  updatedAt: Date;
+
+  static get jsonSchema() {
+    return {
+      type: 'object',
+      required: ['email', 'password'],
+      properties: {
+        id: { type: 'string' },
+        email: { type: 'string', format: 'email' },
+        password: { type: 'string' },
+        firstName: { type: 'string' },
+        lastName: { type: 'string' },
+        isActive: { type: 'boolean' },
+      },
+    };
+  }
+
+  static get relationMappings() {
+    const { UserRole } = require('./user-role.model');
+    const { Role } = require('./role.model');
+
+    return {
+      userRoles: {
+        relation: BaseModel.HasManyRelation,
+        modelClass: UserRole,
+        join: {
+          from: 'users.id',
+          to: 'user_roles.userId',
+        },
+      },
+      roles: {
+        relation: BaseModel.ManyToManyRelation,
+        modelClass: Role,
+        join: {
+          from: 'users.id',
+          through: {
+            from: 'user_roles.userId',
+            to: 'user_roles.roleId',
+          },
+          to: 'roles.id',
+        },
+      },
+    };
+  }
+}

backend/src/object/field-mapper.service.ts

@@ -0,0 +1,314 @@
+import { Injectable } from '@nestjs/common';
+import { FieldDefinition } from '../models/field-definition.model';
+
+export interface FieldConfigDTO {
+  id: string;
+  apiName: string;
+  label: string;
+  type: string;
+  placeholder?: string;
+  helpText?: string;
+  defaultValue?: any;
+  isRequired?: boolean;
+  isReadOnly?: boolean;
+  showOnList?: boolean;
+  showOnDetail?: boolean;
+  showOnEdit?: boolean;
+  sortable?: boolean;
+  options?: Array<{ label: string; value: any }>;
+  rows?: number;
+  min?: number;
+  max?: number;
+  step?: number;
+  accept?: string;
+  relationObject?: string;
+  relationDisplayField?: string;
+  format?: string;
+  prefix?: string;
+  suffix?: string;
+  validationRules?: Array<{
+    type: string;
+    value?: any;
+    message?: string;
+  }>;
+  dependsOn?: string[];
+  computedValue?: string;
+}
+
+export interface ObjectDefinitionDTO {
+  id: string;
+  apiName: string;
+  label: string;
+  pluralLabel?: string;
+  description?: string;
+  isSystem: boolean;
+  fields: FieldConfigDTO[];
+}
+
+@Injectable()
+export class FieldMapperService {
+  /**
+   * Convert a field definition from the database to a frontend-friendly FieldConfig
+   */
+  mapFieldToDTO(field: any): FieldConfigDTO {
+    // Parse ui_metadata if it's a JSON string or object
+    let uiMetadata: any = {};
+    const metadataField = field.ui_metadata || field.uiMetadata;
+    if (metadataField) {
+      if (typeof metadataField === 'string') {
+        try {
+          uiMetadata = JSON.parse(metadataField);
+        } catch (e) {
+          uiMetadata = {};
+        }
+      } else {
+        uiMetadata = metadataField;
+      }
+    }
+    
+    const frontendType = this.mapFieldType(field.type);
+    const isLookupField = frontendType === 'belongsTo' || field.type.toLowerCase().includes('lookup');
+    
+    return {
+      id: field.id,
+      apiName: field.apiName,
+      label: field.label,
+      type: frontendType,
+      
+      // Display properties
+      placeholder: uiMetadata.placeholder || field.description,
+      helpText: uiMetadata.helpText || field.description,
+      defaultValue: field.defaultValue,
+      
+      // Validation
+      isRequired: field.isRequired || false,
+      isReadOnly: field.isSystem || uiMetadata.isReadOnly || false,
+      
+      // View visibility
+      showOnList: uiMetadata.showOnList !== false,
+      showOnDetail: uiMetadata.showOnDetail !== false,
+      showOnEdit: uiMetadata.showOnEdit !== false && !field.isSystem,
+      sortable: uiMetadata.sortable !== false,
+      
+      // Field type specific options
+      options: uiMetadata.options,
+      rows: uiMetadata.rows,
+      min: uiMetadata.min,
+      max: uiMetadata.max,
+      step: uiMetadata.step,
+      accept: uiMetadata.accept,
+      relationObject: field.referenceObject,
+      // For lookup fields, provide default display field if not specified
+      relationDisplayField: isLookupField 
+        ? (uiMetadata.relationDisplayField || 'name')
+        : uiMetadata.relationDisplayField,
+      
+      // Formatting
+      format: uiMetadata.format,
+      prefix: uiMetadata.prefix,
+      suffix: uiMetadata.suffix,
+      
+      // Validation rules
+      validationRules: this.buildValidationRules(field, uiMetadata),
+      
+      // Advanced
+      dependsOn: uiMetadata.dependsOn,
+      computedValue: uiMetadata.computedValue,
+    };
+  }
+
+  /**
+   * Map database field type to frontend FieldType enum
+   */
+  private mapFieldType(dbType: string): string {
+    const typeMap: Record<string, string> = {
+      'string': 'text',
+      'text': 'textarea',
+      'integer': 'number',
+      'decimal': 'number',
+      'boolean': 'boolean',
+      'date': 'date',
+      'datetime': 'datetime',
+      'time': 'time',
+      'email': 'email',
+      'url': 'url',
+      'phone': 'text',
+      'picklist': 'select',
+      'multipicklist': 'multiSelect',
+      'lookup': 'belongsTo',
+      'master-detail': 'belongsTo',
+      'currency': 'currency',
+      'percent': 'number',
+      'textarea': 'textarea',
+      'richtext': 'markdown',
+      'file': 'file',
+      'image': 'image',
+      'json': 'json',
+    };
+    
+    return typeMap[dbType.toLowerCase()] || 'text';
+  }
+
+  /**
+   * Build validation rules array
+   */
+  private buildValidationRules(field: any, uiMetadata: any): Array<any> {
+    const rules = uiMetadata.validationRules || [];
+    
+    // Add required rule if field is required and not already in rules
+    if (field.isRequired && !rules.some(r => r.type === 'required')) {
+      rules.unshift({
+        type: 'required',
+        message: `${field.label} is required`,
+      });
+    }
+    
+    // Add length validation for string fields
+    if (field.length && field.type === 'string') {
+      rules.push({
+        type: 'max',
+        value: field.length,
+        message: `${field.label} must not exceed ${field.length} characters`,
+      });
+    }
+    
+    // Add email validation
+    if (field.type === 'email' && !rules.some(r => r.type === 'email')) {
+      rules.push({
+        type: 'email',
+        message: `${field.label} must be a valid email address`,
+      });
+    }
+    
+    // Add URL validation
+    if (field.type === 'url' && !rules.some(r => r.type === 'url')) {
+      rules.push({
+        type: 'url',
+        message: `${field.label} must be a valid URL`,
+      });
+    }
+    
+    return rules;
+  }
+
+  /**
+   * Convert object definition with fields to DTO
+   */
+  mapObjectDefinitionToDTO(objectDef: any): ObjectDefinitionDTO {
+    return {
+      id: objectDef.id,
+      apiName: objectDef.apiName,
+      label: objectDef.label,
+      pluralLabel: objectDef.pluralLabel,
+      description: objectDef.description,
+      isSystem: objectDef.isSystem || false,
+      fields: (objectDef.fields || [])
+        .filter((f: any) => f.isActive !== false)
+        .sort((a: any, b: any) => (a.displayOrder || 0) - (b.displayOrder || 0))
+        .map((f: any) => this.mapFieldToDTO(f)),
+    };
+  }
+
+  /**
+   * Generate default UI metadata for a field type
+   */
+  generateDefaultUIMetadata(fieldType: string): any {
+    const defaults: Record<string, any> = {
+      text: {
+        showOnList: true,
+        showOnDetail: true,
+        showOnEdit: true,
+        sortable: true,
+      },
+      textarea: {
+        showOnList: false,
+        showOnDetail: true,
+        showOnEdit: true,
+        sortable: false,
+        rows: 4,
+      },
+      number: {
+        showOnList: true,
+        showOnDetail: true,
+        showOnEdit: true,
+        sortable: true,
+      },
+      currency: {
+        showOnList: true,
+        showOnDetail: true,
+        showOnEdit: true,
+        sortable: true,
+        prefix: '$',
+        step: 0.01,
+      },
+      boolean: {
+        showOnList: true,
+        showOnDetail: true,
+        showOnEdit: true,
+        sortable: true,
+      },
+      date: {
+        showOnList: true,
+        showOnDetail: true,
+        showOnEdit: true,
+        sortable: true,
+        format: 'yyyy-MM-dd',
+      },
+      datetime: {
+        showOnList: false,
+        showOnDetail: true,
+        showOnEdit: true,
+        sortable: true,
+        format: 'yyyy-MM-dd HH:mm:ss',
+      },
+      email: {
+        showOnList: true,
+        showOnDetail: true,
+        showOnEdit: true,
+        sortable: true,
+        validationRules: [{ type: 'email' }],
+      },
+      url: {
+        showOnList: false,
+        showOnDetail: true,
+        showOnEdit: true,
+        sortable: false,
+        validationRules: [{ type: 'url' }],
+      },
+      select: {
+        showOnList: true,
+        showOnDetail: true,
+        showOnEdit: true,
+        sortable: true,
+        options: [],
+      },
+      multiSelect: {
+        showOnList: false,
+        showOnDetail: true,
+        showOnEdit: true,
+        sortable: false,
+        options: [],
+      },
+      image: {
+        showOnList: false,
+        showOnDetail: true,
+        showOnEdit: true,
+        sortable: false,
+        accept: 'image/*',
+      },
+      file: {
+        showOnList: false,
+        showOnDetail: true,
+        showOnEdit: true,
+        sortable: false,
+      },
+    };
+    
+    return defaults[fieldType] || {
+      showOnList: true,
+      showOnDetail: true,
+      showOnEdit: true,
+      sortable: true,
+    };
+  }
+}

backend/src/object/models/base.model.ts

@@ -0,0 +1,33 @@
+import { Model } from 'objection';
+import { randomUUID } from 'crypto';
+
+/**
+ * Base model for all dynamic and system models
+ * Provides common functionality for all objects
+ */
+export class BaseModel extends Model {
+  // Common fields
+  id?: string;
+  tenantId?: string;
+  ownerId?: string;
+  name?: string;
+  created_at?: string;
+  updated_at?: string;
+
+  // Hook to set system-managed fields
+  async $beforeInsert() {
+    if (!this.id) {
+      this.id = randomUUID();
+    }
+    if (!this.created_at) {
+      this.created_at = new Date().toISOString().slice(0, 19).replace('T', ' ');
+    }
+    if (!this.updated_at) {
+      this.updated_at = new Date().toISOString().slice(0, 19).replace('T', ' ');
+    }
+  }
+
+  async $beforeUpdate() {
+    this.updated_at = new Date().toISOString().slice(0, 19).replace('T', ' ');
+  }
+}

backend/src/object/models/dynamic-model.factory.ts

@@ -0,0 +1,201 @@
+import { ModelClass, JSONSchema, RelationMappings, Model } from 'objection';
+import { BaseModel } from './base.model';
+
+export interface FieldDefinition {
+  apiName: string;
+  label: string;
+  type: string;
+  isRequired?: boolean;
+  isUnique?: boolean;
+  referenceObject?: string;
+  defaultValue?: string;
+}
+
+export interface RelationDefinition {
+  name: string;
+  type: 'belongsTo' | 'hasMany' | 'hasManyThrough';
+  targetObjectApiName: string;
+  fromColumn: string;
+  toColumn: string;
+}
+
+export interface ObjectMetadata {
+  apiName: string;
+  tableName: string;
+  fields: FieldDefinition[];
+  relations?: RelationDefinition[];
+}
+
+export class DynamicModelFactory {
+  /**
+   * Get relation name from lookup field API name
+   * Converts "ownerId" -> "owner", "customFieldId" -> "customfield"
+   */
+  static getRelationName(lookupFieldApiName: string): string {
+    return lookupFieldApiName.replace(/Id$/, '').toLowerCase();
+  }
+
+  /**
+   * Create a dynamic model class from object metadata
+   * @param meta Object metadata
+   * @param getModel Function to retrieve model classes from registry
+   */
+  static createModel(
+    meta: ObjectMetadata,
+    getModel?: (apiName: string) => ModelClass<any>,
+  ): ModelClass<any> {
+    const { tableName, fields, apiName, relations = [] } = meta;
+
+    // Build JSON schema properties
+    const properties: Record<string, any> = {
+      id: { type: 'string' },
+      tenantId: { type: 'string' },
+      ownerId: { type: 'string' },
+      name: { type: 'string' },
+      created_at: { type: 'string', format: 'date-time' },
+      updated_at: { type: 'string', format: 'date-time' },
+    };
+
+    // Don't require id or tenantId - they'll be set automatically
+    const required: string[] = [];
+
+    // Add custom fields
+    for (const field of fields) {
+      properties[field.apiName] = this.fieldToJsonSchema(field);
+
+      // Only mark as required if explicitly required AND not a system field
+      const systemFields = ['id', 'tenantId', 'ownerId', 'name', 'created_at', 'updated_at'];
+      if (field.isRequired && !systemFields.includes(field.apiName)) {
+        required.push(field.apiName);
+      }
+    }
+
+    // Build relation mappings from lookup fields
+    const lookupFields = fields.filter(f => f.type === 'LOOKUP' && f.referenceObject);
+
+    // Store lookup fields metadata for later use
+    const lookupFieldsInfo = lookupFields.map(f => ({
+      apiName: f.apiName,
+      relationName: DynamicModelFactory.getRelationName(f.apiName),
+      referenceObject: f.referenceObject,
+      targetTable: this.getTableName(f.referenceObject),
+    }));
+
+    // Create the dynamic model class extending BaseModel
+    class DynamicModel extends BaseModel {
+      static tableName = tableName;
+
+      static objectApiName = apiName;
+      
+      static lookupFields = lookupFieldsInfo;
+
+      static get relationMappings(): RelationMappings {
+        const mappings: RelationMappings = {};
+
+        // Build relation mappings from lookup fields
+        for (const lookupInfo of lookupFieldsInfo) {
+          // Use getModel function if provided, otherwise use string reference
+          let modelClass: any = lookupInfo.referenceObject;
+          
+          if (getModel) {
+            const resolvedModel = getModel(lookupInfo.referenceObject);
+            // Only use resolved model if it exists, otherwise skip this relation
+            // It will be resolved later when the model is registered
+            if (resolvedModel) {
+              modelClass = resolvedModel;
+            } else {
+              // Skip this relation if model not found yet
+              continue;
+            }
+          }
+
+          mappings[lookupInfo.relationName] = {
+            relation: Model.BelongsToOneRelation,
+            modelClass,
+            join: {
+              from: `${tableName}.${lookupInfo.apiName}`,
+              to: `${lookupInfo.targetTable}.id`,
+            },
+          };
+        }
+
+        return mappings;
+      }
+
+      static get jsonSchema() {
+        return {
+          type: 'object',
+          required,
+          properties,
+        };
+      }
+    }
+
+    return DynamicModel as any;
+  }
+
+  /**
+   * Convert a field definition to JSON schema property
+   */
+  private static fieldToJsonSchema(field: FieldDefinition): Record<string, any> {
+    switch (field.type.toUpperCase()) {
+      case 'TEXT':
+      case 'STRING':
+      case 'EMAIL':
+      case 'URL':
+      case 'PHONE':
+      case 'PICKLIST':
+      case 'MULTI_PICKLIST':
+        return {
+          type: 'string',
+          ...(field.isUnique && { uniqueItems: true }),
+        };
+
+      case 'LONG_TEXT':
+        return { type: 'string' };
+
+      case 'NUMBER':
+      case 'DECIMAL':
+      case 'CURRENCY':
+      case 'PERCENT':
+        return {
+          type: 'number',
+          ...(field.isUnique && { uniqueItems: true }),
+        };
+
+      case 'INTEGER':
+        return {
+          type: 'integer',
+          ...(field.isUnique && { uniqueItems: true }),
+        };
+
+      case 'BOOLEAN':
+        return { type: 'boolean', default: false };
+
+      case 'DATE':
+        return { type: 'string', format: 'date' };
+
+      case 'DATE_TIME':
+        return { type: 'string', format: 'date-time' };
+
+      case 'LOOKUP':
+      case 'BELONGS_TO':
+        return { type: 'string' };
+
+      default:
+        return { type: 'string' };
+    }
+  }
+
+  /**
+   * Get table name from object API name
+   */
+  private static getTableName(objectApiName: string): string {
+    // Convert PascalCase/camelCase to snake_case and pluralize
+    const snakeCase = objectApiName
+      .replace(/([A-Z])/g, '_$1')
+      .toLowerCase()
+      .replace(/^_/, '');
+    return snakeCase.endsWith('s') ? snakeCase : `${snakeCase}s`;
+  }
+}

backend/src/object/models/model.registry.ts

@@ -0,0 +1,68 @@
+import { Injectable } from '@nestjs/common';
+import { ModelClass } from 'objection';
+import { BaseModel } from './base.model';
+import { DynamicModelFactory, ObjectMetadata } from './dynamic-model.factory';
+
+/**
+ * Registry to store and retrieve dynamic models
+ * One registry per tenant
+ */
+@Injectable()
+export class ModelRegistry {
+  private registry = new Map<string, ModelClass<BaseModel>>();
+
+  /**
+   * Register a model in the registry
+   */
+  registerModel(apiName: string, modelClass: ModelClass<BaseModel>): void {
+    this.registry.set(apiName, modelClass);
+  }
+
+  /**
+   * Get a model from the registry
+   */
+  getModel(apiName: string): ModelClass<BaseModel> {
+    const model = this.registry.get(apiName);
+    if (!model) {
+      throw new Error(`Model for ${apiName} not found in registry`);
+    }
+    return model;
+  }
+
+  /**
+   * Check if a model exists in the registry
+   */
+  hasModel(apiName: string): boolean {
+    return this.registry.has(apiName);
+  }
+
+  /**
+   * Create and register a model from metadata
+   */
+  createAndRegisterModel(
+    metadata: ObjectMetadata,
+  ): ModelClass<BaseModel> {
+    // Create model with a getModel function that resolves from this registry
+    // Returns undefined if model not found (for models not yet registered)
+    const model = DynamicModelFactory.createModel(
+      metadata,
+      (apiName: string) => this.registry.get(apiName),
+    );
+    this.registerModel(metadata.apiName, model);
+    return model;
+  }
+
+  /**
+   * Get all registered model names
+   */
+  getAllModelNames(): string[] {
+    return Array.from(this.registry.keys());
+  }
+
+  /**
+   * Clear the registry (useful for testing)
+   */
+  clear(): void {
+    this.registry.clear();
+  }
+}

backend/src/object/models/model.service.ts

@@ -0,0 +1,184 @@
+import { Injectable, Logger } from '@nestjs/common';
+import { Knex } from 'knex';
+import { ModelClass } from 'objection';
+import { BaseModel } from './base.model';
+import { ModelRegistry } from './model.registry';
+import { ObjectMetadata } from './dynamic-model.factory';
+import { TenantDatabaseService } from '../../tenant/tenant-database.service';
+import { UserModel, RoleModel, PermissionModel } from './system-models';
+
+/**
+ * Service to manage dynamic models for a specific tenant
+ */
+@Injectable()
+export class ModelService {
+  private readonly logger = new Logger(ModelService.name);
+  private tenantRegistries = new Map<string, ModelRegistry>();
+
+  constructor(private tenantDbService: TenantDatabaseService) {}
+
+  /**
+   * Get or create a registry for a tenant
+   */
+  getTenantRegistry(tenantId: string): ModelRegistry {
+    if (!this.tenantRegistries.has(tenantId)) {
+      const registry = new ModelRegistry();
+      
+      // Register system models that are defined as static Objection models
+      this.registerSystemModels(registry);
+      
+      this.tenantRegistries.set(tenantId, registry);
+    }
+    return this.tenantRegistries.get(tenantId)!;
+  }
+
+  /**
+   * Register static system models in the registry
+   * Uses simplified models without complex relationMappings to avoid modelPath issues
+   */
+  private registerSystemModels(registry: ModelRegistry): void {
+    // Register system models by their API name (used in referenceObject fields)
+    // These are simplified versions without relationMappings to avoid dependency issues
+    registry.registerModel('User', UserModel as any);
+    registry.registerModel('Role', RoleModel as any);
+    registry.registerModel('Permission', PermissionModel as any);
+    
+    this.logger.debug('Registered system models: User, Role, Permission');
+  }
+
+  /**
+   * Create and register a model for a tenant
+   */
+  async createModelForObject(
+    tenantId: string,
+    objectMetadata: ObjectMetadata,
+  ): Promise<ModelClass<BaseModel>> {
+    const registry = this.getTenantRegistry(tenantId);
+    const model = registry.createAndRegisterModel(objectMetadata);
+
+    this.logger.log(
+      `Registered model for ${objectMetadata.apiName} in tenant ${tenantId}`,
+    );
+
+    return model;
+  }
+
+  /**
+   * Get a model for a tenant and object
+   */
+  getModel(tenantId: string, objectApiName: string): ModelClass<BaseModel> {
+    const registry = this.getTenantRegistry(tenantId);
+    return registry.getModel(objectApiName);
+  }
+
+  /**
+   * Get a bound model (with knex connection) for a tenant and object
+   */
+  async getBoundModel(
+    tenantId: string,
+    objectApiName: string,
+  ): Promise<ModelClass<BaseModel>> {
+    const knex = await this.tenantDbService.getTenantKnexById(tenantId);
+    const model = this.getModel(tenantId, objectApiName);
+    
+    // Bind knex to the model and also to all models in the registry
+    // This ensures system models also have knex bound when they're used in relations
+    const registry = this.getTenantRegistry(tenantId);
+    const allModels = registry.getAllModelNames();
+    
+    // Bind knex to all models to ensure relations work
+    for (const modelName of allModels) {
+      try {
+        const m = registry.getModel(modelName);
+        if (m && !m.knex()) {
+          m.knex(knex);
+        }
+      } catch (error) {
+        // Ignore errors for models that don't need binding
+      }
+    }
+    
+    return model.bindKnex(knex);
+  }
+
+  /**
+   * Check if a model exists for a tenant
+   */
+  hasModel(tenantId: string, objectApiName: string): boolean {
+    const registry = this.getTenantRegistry(tenantId);
+    return registry.hasModel(objectApiName);
+  }
+
+  /**
+   * Get all model names for a tenant
+   */
+  getAllModelNames(tenantId: string): string[] {
+    const registry = this.getTenantRegistry(tenantId);
+    return registry.getAllModelNames();
+  }
+
+  /**
+   * Ensure a model is registered with all its dependencies.
+   * This method handles recursive model creation for related objects.
+   * 
+   * @param tenantId - The tenant ID
+   * @param objectApiName - The object API name to ensure registration for
+   * @param fetchMetadata - Callback function to fetch object metadata (provided by ObjectService)
+   * @param visited - Set to track visited models and prevent infinite loops
+   */
+  async ensureModelWithDependencies(
+    tenantId: string,
+    objectApiName: string,
+    fetchMetadata: (apiName: string) => Promise<ObjectMetadata>,
+    visited: Set<string> = new Set(),
+  ): Promise<void> {
+    // Prevent infinite recursion
+    if (visited.has(objectApiName)) {
+      return;
+    }
+    visited.add(objectApiName);
+
+    // Check if model already exists
+    if (this.hasModel(tenantId, objectApiName)) {
+      return;
+    }
+
+    try {
+      // Fetch the object metadata
+      const objectMetadata = await fetchMetadata(objectApiName);
+
+      // Extract lookup fields to find dependencies
+      const lookupFields = objectMetadata.fields.filter(
+        f => f.type === 'LOOKUP' && f.referenceObject
+      );
+
+      // Recursively ensure all dependent models are registered first
+      for (const field of lookupFields) {
+        if (field.referenceObject) {
+          try {
+            await this.ensureModelWithDependencies(
+              tenantId,
+              field.referenceObject,
+              fetchMetadata,
+              visited,
+            );
+          } catch (error) {
+            // If related object doesn't exist (e.g., system tables), skip it
+            this.logger.debug(
+              `Skipping registration of related model ${field.referenceObject}: ${error.message}`
+            );
+          }
+        }
+      }
+
+      // Now create and register this model (all dependencies are ready)
+      await this.createModelForObject(tenantId, objectMetadata);
+      this.logger.log(`Registered model for ${objectApiName} in tenant ${tenantId}`);
+    } catch (error) {
+      this.logger.warn(
+        `Failed to ensure model for ${objectApiName}: ${error.message}`
+      );
+      throw error;
+    }
+  }
+}

backend/src/object/models/system-models.ts

@@ -0,0 +1,85 @@
+import { Model } from 'objection';
+
+/**
+ * Simplified User model for use in dynamic object relations
+ * This version doesn't include complex relationMappings to avoid modelPath issues
+ */
+export class UserModel extends Model {
+  static tableName = 'users';
+  static objectApiName = 'User';
+
+  id!: string;
+  email!: string;
+  firstName?: string;
+  lastName?: string;
+  name?: string;
+  isActive!: boolean;
+  createdAt!: Date;
+  updatedAt!: Date;
+
+  static get jsonSchema() {
+    return {
+      type: 'object',
+      required: ['email'],
+      properties: {
+        id: { type: 'string' },
+        email: { type: 'string', format: 'email' },
+        firstName: { type: 'string' },
+        lastName: { type: 'string' },
+        name: { type: 'string' },
+        isActive: { type: 'boolean' },
+      },
+    };
+  }
+
+  // No relationMappings to avoid modelPath resolution issues
+  // These simplified models are only used for lookup relations from dynamic models
+}
+
+/**
+ * Simplified Role model for use in dynamic object relations
+ */
+export class RoleModel extends Model {
+  static tableName = 'roles';
+  static objectApiName = 'Role';
+
+  id!: string;
+  name!: string;
+  description?: string;
+
+  static get jsonSchema() {
+    return {
+      type: 'object',
+      required: ['name'],
+      properties: {
+        id: { type: 'string' },
+        name: { type: 'string' },
+        description: { type: 'string' },
+      },
+    };
+  }
+}
+
+/**
+ * Simplified Permission model for use in dynamic object relations
+ */
+export class PermissionModel extends Model {
+  static tableName = 'permissions';
+  static objectApiName = 'Permission';
+
+  id!: string;
+  name!: string;
+  description?: string;
+
+  static get jsonSchema() {
+    return {
+      type: 'object',
+      required: ['name'],
+      properties: {
+        id: { type: 'string' },
+        name: { type: 'string' },
+        description: { type: 'string' },
+      },
+    };
+  }
+}

backend/src/object/object.module.ts

@@ -2,10 +2,24 @@ import { Module } from '@nestjs/common';
 import { ObjectService } from './object.service';
 import { RuntimeObjectController } from './runtime-object.controller';
 import { SetupObjectController } from './setup-object.controller';
+import { SchemaManagementService } from './schema-management.service';
+import { FieldMapperService } from './field-mapper.service';
+import { TenantModule } from '../tenant/tenant.module';
+import { MigrationModule } from '../migration/migration.module';
+import { RbacModule } from '../rbac/rbac.module';
+import { ModelRegistry } from './models/model.registry';
+import { ModelService } from './models/model.service';
 
 @Module({
-  providers: [ObjectService],
+  imports: [TenantModule, MigrationModule, RbacModule],
+  providers: [
+    ObjectService,
+    SchemaManagementService,
+    FieldMapperService,
+    ModelRegistry,
+    ModelService,
+  ],
   controllers: [RuntimeObjectController, SetupObjectController],
-  exports: [ObjectService],
+  exports: [ObjectService, SchemaManagementService, FieldMapperService, ModelService],
 })
 export class ObjectModule {}

backend/src/object/schema-management.service.ts

@@ -0,0 +1,283 @@
+import { Injectable, Logger } from '@nestjs/common';
+import { Knex } from 'knex';
+import { ObjectDefinition } from '../models/object-definition.model';
+import { FieldDefinition } from '../models/field-definition.model';
+
+@Injectable()
+export class SchemaManagementService {
+  private readonly logger = new Logger(SchemaManagementService.name);
+
+  /**
+   * Create a physical table for an object definition
+   */
+  async createObjectTable(
+    knex: Knex,
+    objectDefinition: ObjectDefinition,
+    fields: FieldDefinition[],
+  ) {
+    const tableName = this.getTableName(objectDefinition.apiName);
+
+    // Check if table already exists
+    const exists = await knex.schema.hasTable(tableName);
+    if (exists) {
+      throw new Error(`Table ${tableName} already exists`);
+    }
+
+    await knex.schema.createTable(tableName, (table) => {
+      // Standard fields
+      table.uuid('id').primary().defaultTo(knex.raw('(UUID())'));
+      table.timestamps(true, true);
+
+      // Custom fields from field definitions
+      for (const field of fields) {
+        this.addFieldColumn(table, field);
+      }
+    });
+
+    this.logger.log(`Created table: ${tableName}`);
+  }
+
+  /**
+   * Add a new field to an existing object table
+   */
+  async addFieldToTable(
+    knex: Knex,
+    objectApiName: string,
+    field: FieldDefinition,
+  ) {
+    const tableName = this.getTableName(objectApiName);
+
+    await knex.schema.alterTable(tableName, (table) => {
+      this.addFieldColumn(table, field);
+    });
+
+    this.logger.log(`Added field ${field.apiName} to table ${tableName}`);
+  }
+
+  /**
+   * Remove a field from an existing object table
+   */
+  async removeFieldFromTable(
+    knex: Knex,
+    objectApiName: string,
+    fieldApiName: string,
+  ) {
+    const tableName = this.getTableName(objectApiName);
+
+    await knex.schema.alterTable(tableName, (table) => {
+      table.dropColumn(fieldApiName);
+    });
+
+    this.logger.log(`Removed field ${fieldApiName} from table ${tableName}`);
+  }
+
+  /**
+   * Alter a field in an existing object table
+   * Handles safe updates like changing NOT NULL or constraints
+   * Warns about potentially destructive operations
+   */
+  async alterFieldInTable(
+    knex: Knex,
+    objectApiName: string,
+    fieldApiName: string,
+    field: FieldDefinition,
+    options?: {
+      skipTypeChange?: boolean; // Skip if type change would lose data
+    },
+  ) {
+    const tableName = this.getTableName(objectApiName);
+    const skipTypeChange = options?.skipTypeChange ?? true;
+
+    await knex.schema.alterTable(tableName, (table) => {
+      // Drop the existing column and recreate with new definition
+      // Note: This approach works for metadata changes, but type changes may need data migration
+      table.dropColumn(fieldApiName);
+    });
+
+    // Recreate the column with new definition
+    await knex.schema.alterTable(tableName, (table) => {
+      this.addFieldColumn(table, field);
+    });
+
+    this.logger.log(`Altered field ${fieldApiName} in table ${tableName}`);
+  }
+
+  /**
+   * Drop an object table
+   */
+  async dropObjectTable(knex: Knex, objectApiName: string) {
+    const tableName = this.getTableName(objectApiName);
+
+    await knex.schema.dropTableIfExists(tableName);
+
+    this.logger.log(`Dropped table: ${tableName}`);
+  }
+
+  /**
+   * Add a field column to a table builder
+   */
+  private addFieldColumn(
+    table: Knex.CreateTableBuilder | Knex.AlterTableBuilder,
+    field: FieldDefinition,
+  ) {
+    const columnName = field.apiName;
+
+    let column: Knex.ColumnBuilder;
+
+    switch (field.type) {
+      // Text types
+      case 'String':
+      case 'TEXT':
+      case 'EMAIL':
+      case 'PHONE':
+      case 'URL':
+        column = table.string(columnName, field.length || 255);
+        break;
+
+      case 'Text':
+      case 'LONG_TEXT':
+        column = table.text(columnName);
+        break;
+
+      case 'PICKLIST':
+      case 'MULTI_PICKLIST':
+        column = table.string(columnName, 255);
+        break;
+
+      // Numeric types
+      case 'Number':
+      case 'NUMBER':
+      case 'CURRENCY':
+      case 'PERCENT':
+        if (field.scale && field.scale > 0) {
+          column = table.decimal(
+            columnName,
+            field.precision || 10,
+            field.scale,
+          );
+        } else {
+          column = table.integer(columnName);
+        }
+        break;
+
+      case 'Boolean':
+      case 'BOOLEAN':
+        column = table.boolean(columnName).defaultTo(false);
+        break;
+
+      // Date types
+      case 'Date':
+      case 'DATE':
+        column = table.date(columnName);
+        break;
+
+      case 'DateTime':
+      case 'DATE_TIME':
+        column = table.datetime(columnName);
+        break;
+
+      case 'TIME':
+        column = table.time(columnName);
+        break;
+
+      // Relationship types
+      case 'Reference':
+      case 'LOOKUP':
+        column = table.uuid(columnName);
+        if (field.referenceObject) {
+          const refTableName = this.getTableName(field.referenceObject);
+          column.references('id').inTable(refTableName).onDelete('SET NULL');
+        }
+        break;
+
+      // Email (legacy)
+      case 'Email':
+        column = table.string(columnName, 255);
+        break;
+
+      // Phone (legacy)
+      case 'Phone':
+        column = table.string(columnName, 50);
+        break;
+
+      // Url (legacy)
+      case 'Url':
+        column = table.string(columnName, 255);
+        break;
+
+      // File types
+      case 'FILE':
+      case 'IMAGE':
+        column = table.text(columnName); // Store file path or URL
+        break;
+
+      // JSON
+      case 'Json':
+      case 'JSON':
+        column = table.json(columnName);
+        break;
+
+      default:
+        throw new Error(`Unsupported field type: ${field.type}`);
+    }
+
+    if (field.isRequired) {
+      column.notNullable();
+    } else {
+      column.nullable();
+    }
+
+    if (field.isUnique) {
+      column.unique();
+    }
+
+    if (field.defaultValue) {
+      column.defaultTo(field.defaultValue);
+    }
+
+    return column;
+  }
+
+  /**
+   * Convert object API name to table name (convert to snake_case, pluralize)
+   */
+  private getTableName(apiName: string): string {
+    // Convert PascalCase to snake_case
+    const snakeCase = apiName
+      .replace(/([A-Z])/g, '_$1')
+      .toLowerCase()
+      .replace(/^_/, '');
+
+    // Simple pluralization (append 's' if not already plural)
+    // In production, use a proper pluralization library
+    return snakeCase.endsWith('s') ? snakeCase : `${snakeCase}s`;
+  }
+
+  /**
+   * Validate field definition before creating column
+   */
+  validateFieldDefinition(field: FieldDefinition) {
+    if (!field.apiName || !field.label || !field.type) {
+      throw new Error('Field must have apiName, label, and type');
+    }
+
+    // Validate field name (alphanumeric + underscore, starts with letter)
+    if (!/^[a-zA-Z][a-zA-Z0-9_]*$/.test(field.apiName)) {
+      throw new Error(`Invalid field name: ${field.apiName}`);
+    }
+
+    // Validate reference field has referenceObject
+    if (field.type === 'Reference' && !field.referenceObject) {
+      throw new Error('Reference field must specify referenceObject');
+    }
+
+    // Validate numeric fields
+    if (field.type === 'Number') {
+      if (field.scale && field.scale > 0 && !field.precision) {
+        throw new Error('Decimal fields must specify precision');
+      }
+    }
+
+    return true;
+  }
+}

backend/src/object/setup-object.controller.ts

@@ -2,18 +2,27 @@ import {
   Controller,
   Get,
   Post,
+  Patch,
+  Put,
+  Delete,
   Param,
   Body,
   UseGuards,
 } from '@nestjs/common';
 import { ObjectService } from './object.service';
+import { FieldMapperService } from './field-mapper.service';
 import { JwtAuthGuard } from '../auth/jwt-auth.guard';
 import { TenantId } from '../tenant/tenant.decorator';
+import { TenantDatabaseService } from '../tenant/tenant-database.service';
 
 @Controller('setup/objects')
 @UseGuards(JwtAuthGuard)
 export class SetupObjectController {
-  constructor(private objectService: ObjectService) {}
+  constructor(
+    private objectService: ObjectService,
+    private fieldMapperService: FieldMapperService,
+    private tenantDbService: TenantDatabaseService,
+  ) {}
 
   @Get()
   async getObjectDefinitions(@TenantId() tenantId: string) {
@@ -25,7 +34,20 @@ export class SetupObjectController {
     @TenantId() tenantId: string,
     @Param('objectApiName') objectApiName: string,
   ) {
-    return this.objectService.getObjectDefinition(tenantId, objectApiName);
+    const objectDef = await this.objectService.getObjectDefinition(tenantId, objectApiName);
+    return this.fieldMapperService.mapObjectDefinitionToDTO(objectDef);
+  }
+
+  @Get(':objectApiName/ui-config')
+  async getObjectUIConfig(
+    @TenantId() tenantId: string,
+    @Param('objectApiName') objectApiName: string,
+  ) {
+    const objectDef = await this.objectService.getObjectDefinition(
+      tenantId,
+      objectApiName,
+    );
+    return this.fieldMapperService.mapObjectDefinitionToDTO(objectDef);
   }
 
   @Post()
@@ -42,10 +64,93 @@ export class SetupObjectController {
     @Param('objectApiName') objectApiName: string,
     @Body() data: any,
   ) {
-    return this.objectService.createFieldDefinition(
+    const field = await this.objectService.createFieldDefinition(
       tenantId,
       objectApiName,
       data,
     );
+    // Map the created field to frontend format
+    return this.fieldMapperService.mapFieldToDTO(field);
+  }
+
+  @Put(':objectApiName/fields/:fieldApiName')
+  async updateFieldDefinition(
+    @TenantId() tenantId: string,
+    @Param('objectApiName') objectApiName: string,
+    @Param('fieldApiName') fieldApiName: string,
+    @Body() data: any,
+  ) {
+    const field = await this.objectService.updateFieldDefinition(
+      tenantId,
+      objectApiName,
+      fieldApiName,
+      data,
+    );
+    return this.fieldMapperService.mapFieldToDTO(field);
+  }
+
+  @Delete(':objectApiName/fields/:fieldApiName')
+  async deleteFieldDefinition(
+    @TenantId() tenantId: string,
+    @Param('objectApiName') objectApiName: string,
+    @Param('fieldApiName') fieldApiName: string,
+  ) {
+    return this.objectService.deleteFieldDefinition(
+      tenantId,
+      objectApiName,
+      fieldApiName,
+    );
+  }
+
+  @Patch(':objectApiName')
+  async updateObjectDefinition(
+    @TenantId() tenantId: string,
+    @Param('objectApiName') objectApiName: string,
+    @Body() data: any,
+  ) {
+    return this.objectService.updateObjectDefinition(tenantId, objectApiName, data);
+  }
+
+  @Get(':objectId/field-permissions')
+  async getFieldPermissions(
+    @TenantId() tenantId: string,
+    @Param('objectId') objectId: string,
+  ) {
+    return this.objectService.getFieldPermissions(tenantId, objectId);
+  }
+
+  @Put(':objectId/field-permissions')
+  async updateFieldPermission(
+    @TenantId() tenantId: string,
+    @Param('objectId') objectId: string,
+    @Body() data: { roleId: string; fieldDefinitionId: string; canRead: boolean; canEdit: boolean },
+  ) {
+    return this.objectService.updateFieldPermission(tenantId, data.roleId, data.fieldDefinitionId, data.canRead, data.canEdit);
+  }
+
+  @Get(':objectApiName/permissions/:roleId')
+  async getObjectPermissions(
+    @TenantId() tenantId: string,
+    @Param('objectApiName') objectApiName: string,
+    @Param('roleId') roleId: string,
+  ) {
+    return this.objectService.getObjectPermissions(tenantId, objectApiName, roleId);
+  }
+
+  @Put(':objectApiName/permissions')
+  async updateObjectPermissions(
+    @TenantId() tenantId: string,
+    @Param('objectApiName') objectApiName: string,
+    @Body() data: { 
+      roleId: string;
+      canCreate: boolean;
+      canRead: boolean;
+      canEdit: boolean;
+      canDelete: boolean;
+      canViewAll: boolean;
+      canModifyAll: boolean;
+    },
+  ) {
+    return this.objectService.updateObjectPermissions(tenantId, objectApiName, data);
   }
 }

backend/src/page-layout/dto/page-layout.dto.ts

@@ -0,0 +1,54 @@
+import { IsString, IsUUID, IsBoolean, IsOptional, IsObject } from 'class-validator';
+
+export class CreatePageLayoutDto {
+  @IsString()
+  name: string;
+
+  @IsUUID()
+  objectId: string;
+
+  @IsBoolean()
+  @IsOptional()
+  isDefault?: boolean;
+
+  @IsObject()
+  layoutConfig: {
+    fields: Array<{
+      fieldId: string;
+      x: number;
+      y: number;
+      w: number;
+      h: number;
+    }>;
+  };
+
+  @IsString()
+  @IsOptional()
+  description?: string;
+}
+
+export class UpdatePageLayoutDto {
+  @IsString()
+  @IsOptional()
+  name?: string;
+
+  @IsBoolean()
+  @IsOptional()
+  isDefault?: boolean;
+
+  @IsObject()
+  @IsOptional()
+  layoutConfig?: {
+    fields: Array<{
+      fieldId: string;
+      x: number;
+      y: number;
+      w: number;
+      h: number;
+    }>;
+  };
+
+  @IsString()
+  @IsOptional()
+  description?: string;
+}

backend/src/page-layout/page-layout.controller.ts

@@ -0,0 +1,55 @@
+import {
+  Controller,
+  Get,
+  Post,
+  Body,
+  Patch,
+  Param,
+  Delete,
+  UseGuards,
+  Query,
+} from '@nestjs/common';
+import { PageLayoutService } from './page-layout.service';
+import { CreatePageLayoutDto, UpdatePageLayoutDto } from './dto/page-layout.dto';
+import { JwtAuthGuard } from '../auth/jwt-auth.guard';
+import { TenantId } from '../tenant/tenant.decorator';
+
+@Controller('page-layouts')
+@UseGuards(JwtAuthGuard)
+export class PageLayoutController {
+  constructor(private readonly pageLayoutService: PageLayoutService) {}
+
+  @Post()
+  create(@TenantId() tenantId: string, @Body() createPageLayoutDto: CreatePageLayoutDto) {
+    return this.pageLayoutService.create(tenantId, createPageLayoutDto);
+  }
+
+  @Get()
+  findAll(@TenantId() tenantId: string, @Query('objectId') objectId?: string) {
+    return this.pageLayoutService.findAll(tenantId, objectId);
+  }
+
+  @Get('default/:objectId')
+  findDefaultByObject(@TenantId() tenantId: string, @Param('objectId') objectId: string) {
+    return this.pageLayoutService.findDefaultByObject(tenantId, objectId);
+  }
+
+  @Get(':id')
+  findOne(@TenantId() tenantId: string, @Param('id') id: string) {
+    return this.pageLayoutService.findOne(tenantId, id);
+  }
+
+  @Patch(':id')
+  update(
+    @TenantId() tenantId: string,
+    @Param('id') id: string,
+    @Body() updatePageLayoutDto: UpdatePageLayoutDto,
+  ) {
+    return this.pageLayoutService.update(tenantId, id, updatePageLayoutDto);
+  }
+
+  @Delete(':id')
+  remove(@TenantId() tenantId: string, @Param('id') id: string) {
+    return this.pageLayoutService.remove(tenantId, id);
+  }
+}

backend/src/page-layout/page-layout.module.ts

@@ -0,0 +1,12 @@
+import { Module } from '@nestjs/common';
+import { PageLayoutService } from './page-layout.service';
+import { PageLayoutController } from './page-layout.controller';
+import { TenantModule } from '../tenant/tenant.module';
+
+@Module({
+  imports: [TenantModule],
+  controllers: [PageLayoutController],
+  providers: [PageLayoutService],
+  exports: [PageLayoutService],
+})
+export class PageLayoutModule {}

backend/src/page-layout/page-layout.service.ts

@@ -0,0 +1,118 @@
+import { Injectable, NotFoundException } from '@nestjs/common';
+import { TenantDatabaseService } from '../tenant/tenant-database.service';
+import { CreatePageLayoutDto, UpdatePageLayoutDto } from './dto/page-layout.dto';
+
+@Injectable()
+export class PageLayoutService {
+  constructor(private tenantDbService: TenantDatabaseService) {}
+
+  async create(tenantId: string, createDto: CreatePageLayoutDto) {
+    const knex = await this.tenantDbService.getTenantKnex(tenantId);
+    
+    // If this layout is set as default, unset other defaults for the same object
+    if (createDto.isDefault) {
+      await knex('page_layouts')
+        .where({ object_id: createDto.objectId })
+        .update({ is_default: false });
+    }
+
+    const [id] = await knex('page_layouts').insert({
+      name: createDto.name,
+      object_id: createDto.objectId,
+      is_default: createDto.isDefault || false,
+      layout_config: JSON.stringify(createDto.layoutConfig),
+      description: createDto.description || null,
+    });
+
+    // Get the inserted record
+    const result = await knex('page_layouts').where({ id }).first();
+    return result;
+  }
+
+  async findAll(tenantId: string, objectId?: string) {
+    const knex = await this.tenantDbService.getTenantKnex(tenantId);
+    
+    let query = knex('page_layouts');
+
+    if (objectId) {
+      query = query.where({ object_id: objectId });
+    }
+
+    const layouts = await query.orderByRaw('is_default DESC, name ASC');
+    return layouts;
+  }
+
+  async findOne(tenantId: string, id: string) {
+    const knex = await this.tenantDbService.getTenantKnex(tenantId);
+    
+    const layout = await knex('page_layouts').where({ id }).first();
+
+    if (!layout) {
+      throw new NotFoundException(`Page layout with ID ${id} not found`);
+    }
+
+    return layout;
+  }
+
+  async findDefaultByObject(tenantId: string, objectId: string) {
+    const knex = await this.tenantDbService.getTenantKnex(tenantId);
+    
+    const layout = await knex('page_layouts')
+      .where({ object_id: objectId, is_default: true })
+      .first();
+
+    return layout || null;
+  }
+
+  async update(tenantId: string, id: string, updateDto: UpdatePageLayoutDto) {
+    const knex = await this.tenantDbService.getTenantKnex(tenantId);
+    
+    // Check if layout exists
+    await this.findOne(tenantId, id);
+
+    // If setting as default, unset other defaults for the same object
+    if (updateDto.isDefault) {
+      const layout = await this.findOne(tenantId, id);
+      await knex('page_layouts')
+        .where({ object_id: layout.object_id })
+        .whereNot({ id })
+        .update({ is_default: false });
+    }
+
+    const updates: any = {};
+
+    if (updateDto.name !== undefined) {
+      updates.name = updateDto.name;
+    }
+
+    if (updateDto.isDefault !== undefined) {
+      updates.is_default = updateDto.isDefault;
+    }
+
+    if (updateDto.layoutConfig !== undefined) {
+      updates.layout_config = JSON.stringify(updateDto.layoutConfig);
+    }
+
+    if (updateDto.description !== undefined) {
+      updates.description = updateDto.description;
+    }
+
+    updates.updated_at = knex.fn.now();
+
+    await knex('page_layouts').where({ id }).update(updates);
+
+    // Get the updated record
+    const result = await knex('page_layouts').where({ id }).first();
+    return result;
+  }
+
+  async remove(tenantId: string, id: string) {
+    const knex = await this.tenantDbService.getTenantKnex(tenantId);
+    
+    await this.findOne(tenantId, id);
+
+    await knex('page_layouts').where({ id }).delete();
+
+    return { message: 'Page layout deleted successfully' };
+  }
+}

backend/src/prisma/central-prisma.service.ts

@@ -0,0 +1,16 @@
+import { PrismaClient as CentralPrismaClient } from '.prisma/central';
+
+let centralPrisma: CentralPrismaClient;
+
+export function getCentralPrisma(): CentralPrismaClient {
+  if (!centralPrisma) {
+    centralPrisma = new CentralPrismaClient();
+  }
+  return centralPrisma;
+}
+
+export async function disconnectCentral() {
+  if (centralPrisma) {
+    await centralPrisma.$disconnect();
+  }
+}

backend/src/prisma/prisma.service.ts

@@ -1,5 +1,5 @@
 import { Injectable, OnModuleInit, OnModuleDestroy } from '@nestjs/common';
-import { PrismaClient } from '@prisma/client';
+import { PrismaClient } from '.prisma/tenant';
 
 @Injectable()
 export class PrismaService

backend/src/rbac/ability.factory.ts

@@ -0,0 +1,198 @@
+import { AbilityBuilder, PureAbility, AbilityClass } from '@casl/ability';
+import { Injectable } from '@nestjs/common';
+import { User } from '../models/user.model';
+import { RoleObjectPermission } from '../models/role-object-permission.model';
+import { RoleFieldPermission } from '../models/role-field-permission.model';
+import { RecordShare } from '../models/record-share.model';
+
+// Define action types
+export type Action = 'create' | 'read' | 'update' | 'delete' | 'view_all' | 'modify_all';
+
+// Define subject types - can be string (object API name) or actual object with fields
+export type Subject = string | { objectApiName: string; ownerId?: string; id?: string; [key: string]: any };
+
+// Define field actions
+export type FieldAction = 'read' | 'edit';
+
+export type AppAbility = PureAbility<[Action, Subject], { field?: string }>;
+
+@Injectable()
+export class AbilityFactory {
+  /**
+   * Build CASL ability for a user based on their roles and permissions
+   * This aggregates permissions from all roles the user has
+   */
+  async defineAbilityFor(
+    user: User & { roles?: Array<{ objectPermissions?: RoleObjectPermission[]; fieldPermissions?: RoleFieldPermission[] }> },
+    recordShares?: RecordShare[],
+  ): Promise<AppAbility> {
+    const { can, cannot, build } = new AbilityBuilder<AppAbility>(PureAbility as AbilityClass<AppAbility>);
+
+    if (!user.roles || user.roles.length === 0) {
+      // No roles = no permissions
+      return build();
+    }
+
+    // Aggregate object permissions from all roles
+    const objectPermissionsMap = new Map<string, {
+      canCreate: boolean;
+      canRead: boolean;
+      canEdit: boolean;
+      canDelete: boolean;
+      canViewAll: boolean;
+      canModifyAll: boolean;
+    }>();
+
+    // Aggregate field permissions from all roles
+    const fieldPermissionsMap = new Map<string, {
+      canRead: boolean;
+      canEdit: boolean;
+    }>();
+
+    // Process all roles
+    for (const role of user.roles) {
+      // Aggregate object permissions
+      if (role.objectPermissions) {
+        for (const perm of role.objectPermissions) {
+          const existing = objectPermissionsMap.get(perm.objectDefinitionId) || {
+            canCreate: false,
+            canRead: false,
+            canEdit: false,
+            canDelete: false,
+            canViewAll: false,
+            canModifyAll: false,
+          };
+
+          // Union of permissions (if any role grants it, user has it)
+          objectPermissionsMap.set(perm.objectDefinitionId, {
+            canCreate: existing.canCreate || perm.canCreate,
+            canRead: existing.canRead || perm.canRead,
+            canEdit: existing.canEdit || perm.canEdit,
+            canDelete: existing.canDelete || perm.canDelete,
+            canViewAll: existing.canViewAll || perm.canViewAll,
+            canModifyAll: existing.canModifyAll || perm.canModifyAll,
+          });
+        }
+      }
+
+      // Aggregate field permissions
+      if (role.fieldPermissions) {
+        for (const perm of role.fieldPermissions) {
+          const existing = fieldPermissionsMap.get(perm.fieldDefinitionId) || {
+            canRead: false,
+            canEdit: false,
+          };
+
+          fieldPermissionsMap.set(perm.fieldDefinitionId, {
+            canRead: existing.canRead || perm.canRead,
+            canEdit: existing.canEdit || perm.canEdit,
+          });
+        }
+      }
+    }
+
+    // Convert aggregated permissions to CASL rules
+    for (const [objectId, perms] of objectPermissionsMap) {
+      // Create permission
+      if (perms.canCreate) {
+        can('create', objectId);
+      }
+
+      // Read permission
+      if (perms.canRead) {
+        can('read', objectId);
+      }
+
+      // View all permission (can see all records regardless of ownership)
+      if (perms.canViewAll) {
+        can('view_all', objectId);
+      }
+
+      // Edit permission
+      if (perms.canEdit) {
+        can('update', objectId);
+      }
+
+      // Modify all permission (can edit all records regardless of ownership)
+      if (perms.canModifyAll) {
+        can('modify_all', objectId);
+      }
+
+      // Delete permission
+      if (perms.canDelete) {
+        can('delete', objectId);
+      }
+    }
+
+    // Add record sharing permissions
+    if (recordShares) {
+      for (const share of recordShares) {
+        // Only add if share is active (not expired, not revoked)
+        const now = new Date();
+        const isExpired = share.expiresAt && share.expiresAt < now;
+        const isRevoked = share.revokedAt !== null;
+
+        if (!isExpired && !isRevoked) {
+          // Note: Record-level sharing will be checked in authorization service
+          // CASL abilities are primarily for object-level permissions
+          // Individual record access is validated in applyScopeToQuery
+        }
+      }
+    }
+
+    return build();
+  }
+
+  /**
+   * Check if user can access a specific field
+   * Returns true if user has permission or if no restriction exists
+   */
+  canAccessField(
+    fieldDefinitionId: string,
+    action: FieldAction,
+    user: User & { roles?: Array<{ fieldPermissions?: RoleFieldPermission[] }> },
+  ): boolean {
+    if (!user.roles || user.roles.length === 0) {
+      return false;
+    }
+
+    // Collect all field permissions from all roles
+    const allFieldPermissions: RoleFieldPermission[] = [];
+    for (const role of user.roles) {
+      if (role.fieldPermissions) {
+        allFieldPermissions.push(...role.fieldPermissions);
+      }
+    }
+
+    // If there are NO field permissions configured at all, allow by default
+    if (allFieldPermissions.length === 0) {
+      return true;
+    }
+
+    // If field permissions exist, check for explicit grants (union of all roles)
+    for (const role of user.roles) {
+      if (role.fieldPermissions) {
+        const fieldPerm = role.fieldPermissions.find(fp => fp.fieldDefinitionId === fieldDefinitionId);
+        if (fieldPerm) {
+          if (action === 'read' && fieldPerm.canRead) return true;
+          if (action === 'edit' && fieldPerm.canEdit) return true;
+        }
+      }
+    }
+
+    // Field permissions exist but this field is not explicitly granted → deny
+    return false;
+  }
+
+  /**
+   * Filter fields based on user permissions
+   * Returns array of field IDs the user can access with the specified action
+   */
+  filterFields(
+    fieldDefinitionIds: string[],
+    action: FieldAction,
+    user: User & { roles?: Array<{ fieldPermissions?: RoleFieldPermission[] }> },
+  ): string[] {
+    return fieldDefinitionIds.filter(fieldId => this.canAccessField(fieldId, action, user));
+  }
+}

backend/src/rbac/authorization.service.ts

@@ -0,0 +1,282 @@
+import { Injectable, ForbiddenException } from '@nestjs/common';
+import { Knex } from 'knex';
+import { User } from '../models/user.model';
+import { ObjectDefinition } from '../models/object-definition.model';
+import { FieldDefinition } from '../models/field-definition.model';
+import { RecordShare } from '../models/record-share.model';
+import { AbilityFactory, AppAbility, Action } from './ability.factory';
+import { DynamicModelFactory } from '../object/models/dynamic-model.factory';
+import { subject } from '@casl/ability';
+
+@Injectable()
+export class AuthorizationService {
+  constructor(private abilityFactory: AbilityFactory) {}
+
+  /**
+   * Apply authorization scope to a query based on OWD and user permissions
+   * This determines which records the user can see
+   * Modifies the query in place and returns void
+   */
+  async applyScopeToQuery<T = any>(
+    query: any, // Accept both Knex and Objection query builders
+    objectDef: ObjectDefinition,
+    user: User & { roles?: any[] },
+    action: Action,
+    knex: Knex,
+  ): Promise<void> {
+    // Get user's ability
+    const recordShares = await this.getActiveRecordShares(objectDef.id, user.id, knex);
+    const ability = await this.abilityFactory.defineAbilityFor(user, recordShares);
+
+    // Check if user has the base permission for this action
+    // Use object ID, not API name, since permissions are stored by object ID
+    if (!ability.can(action, objectDef.id)) {
+      // No permission at all - return empty result
+      query.where(knex.raw('1 = 0'));
+      return;
+    }
+
+    // Check special permissions
+    const hasViewAll = ability.can('view_all', objectDef.id);
+    const hasModifyAll = ability.can('modify_all', objectDef.id);
+
+    // If user has view_all or modify_all, they can see all records
+    if (hasViewAll || hasModifyAll) {
+      // No filtering needed
+      return;
+    }
+
+    // Apply OWD (Org-Wide Default) restrictions
+    switch (objectDef.orgWideDefault) {
+      case 'public_read_write':
+        // Everyone can see all records
+        return;
+
+      case 'public_read':
+        // Everyone can see all records (write operations checked separately)
+        return;
+
+      case 'private':
+      default:
+        // Only owner and explicitly shared records
+        await this.applyPrivateScope(query, objectDef, user, recordShares, knex);
+        return;
+    }
+  }
+
+  /**
+   * Apply private scope: owner + shared records
+   */
+  private async applyPrivateScope<T = any>(
+    query: any, // Accept both Knex and Objection query builders
+    objectDef: ObjectDefinition,
+    user: User,
+    recordShares: RecordShare[],
+    knex: Knex,
+  ): Promise<void> {
+    const tableName = this.getTableName(objectDef.apiName);
+    
+    // Check if table has ownerId column
+    const hasOwner = await knex.schema.hasColumn(tableName, 'ownerId');
+
+    if (!hasOwner && recordShares.length === 0) {
+      // No ownership and no shares - user can't see anything
+      query.where(knex.raw('1 = 0'));
+      return;
+    }
+
+    // Build conditions: ownerId = user OR record shared with user
+    query.where((builder) => {
+      if (hasOwner) {
+        builder.orWhere(`${tableName}.ownerId`, user.id);
+      }
+
+      if (recordShares.length > 0) {
+        const sharedRecordIds = recordShares.map(share => share.recordId);
+        builder.orWhereIn(`${tableName}.id`, sharedRecordIds);
+      }
+    });
+  }
+
+  /**
+   * Check if user can perform action on a specific record
+   */
+  async canPerformAction(
+    action: Action,
+    objectDef: ObjectDefinition,
+    record: any,
+    user: User & { roles?: any[] },
+    knex: Knex,
+  ): Promise<boolean> {
+    const recordShares = await this.getActiveRecordShares(objectDef.id, user.id, knex);
+    const ability = await this.abilityFactory.defineAbilityFor(user, recordShares);
+
+    // Check base permission - use object ID not API name
+    if (!ability.can(action, objectDef.id)) {
+      return false;
+    }
+
+    // Check special permissions - use object ID not API name
+    const hasViewAll = ability.can('view_all', objectDef.id);
+    const hasModifyAll = ability.can('modify_all', objectDef.id);
+
+    // canViewAll only grants read access to all records
+    if (action === 'read' && hasViewAll) {
+      return true;
+    }
+
+    // canModifyAll grants edit/delete access to all records
+    if ((action === 'update' || action === 'delete') && hasModifyAll) {
+      return true;
+    }
+
+    // Check OWD
+    switch (objectDef.orgWideDefault) {
+      case 'public_read_write':
+        return true;
+
+      case 'public_read':
+        if (action === 'read') return true;
+        // For write actions, check ownership
+        return record.ownerId === user.id;
+
+      case 'private':
+      default:
+        // Check ownership
+        if (record.ownerId === user.id) return true;
+
+        // Check if record is shared with user
+        const share = recordShares.find(s => s.recordId === record.id);
+        if (share) {
+          if (action === 'read' && share.accessLevel.canRead) return true;
+          if (action === 'update' && share.accessLevel.canEdit) return true;
+          if (action === 'delete' && share.accessLevel.canDelete) return true;
+        }
+
+        return false;
+    }
+  }
+
+  /**
+   * Filter data based on field-level permissions
+   * Removes fields the user cannot read
+   */
+  async filterReadableFields(
+    data: any,
+    fields: FieldDefinition[],
+    user: User & { roles?: any[] },
+  ): Promise<any> {
+    const filtered: any = {};
+
+    // Always include id - it's required for navigation and record identification
+    if (data.id !== undefined) {
+      filtered.id = data.id;
+    }
+
+    for (const field of fields) {
+      if (this.abilityFactory.canAccessField(field.id, 'read', user)) {
+        if (data[field.apiName] !== undefined) {
+          filtered[field.apiName] = data[field.apiName];
+        }
+        
+        // For lookup fields, also include the related object (e.g., ownerId -> owner)
+        if (field.type === 'LOOKUP') {
+          const relationName = DynamicModelFactory.getRelationName(field.apiName);
+          if (data[relationName] !== undefined) {
+            filtered[relationName] = data[relationName];
+          }
+        }
+      }
+    }
+
+    return filtered;
+  }
+
+  /**
+   * Filter data based on field-level permissions
+   * Removes fields the user cannot edit
+   */
+  async filterEditableFields(
+    data: any,
+    fields: FieldDefinition[],
+    user: User & { roles?: any[] },
+  ): Promise<any> {
+    const filtered: any = {};
+
+    for (const field of fields) {
+      if (this.abilityFactory.canAccessField(field.id, 'edit', user)) {
+        if (data[field.apiName] !== undefined) {
+          filtered[field.apiName] = data[field.apiName];
+        }
+      }
+    }
+
+    return filtered;
+  }
+
+  /**
+   * Get active record shares for a user on an object
+   */
+  private async getActiveRecordShares(
+    objectDefinitionId: string,
+    userId: string,
+    knex: Knex,
+  ): Promise<RecordShare[]> {
+    const now = new Date();
+
+    return await RecordShare.query(knex)
+      .where('objectDefinitionId', objectDefinitionId)
+      .where('granteeUserId', userId)
+      .whereNull('revokedAt')
+      .where((builder) => {
+        builder.whereNull('expiresAt').orWhere('expiresAt', '>', now);
+      });
+  }
+
+  /**
+   * Check if user has permission to create records
+   */
+  async canCreate(
+    objectDef: ObjectDefinition,
+    user: User & { roles?: any[] },
+  ): Promise<boolean> {
+    const ability = await this.abilityFactory.defineAbilityFor(user, []);
+    return ability.can('create', objectDef.id);
+  }
+
+  /**
+   * Throw exception if user cannot perform action
+   */
+  async assertCanPerformAction(
+    action: Action,
+    objectDef: ObjectDefinition,
+    record: any,
+    user: User & { roles?: any[] },
+    knex: Knex,
+  ): Promise<void> {
+    const can = await this.canPerformAction(action, objectDef, record, user, knex);
+    if (!can) {
+      throw new ForbiddenException(`You do not have permission to ${action} this record`);
+    }
+  }
+
+  /**
+   * Get table name from API name
+   */
+  private getTableName(apiName: string): string {
+    // Convert CamelCase to snake_case and pluralize
+    const snakeCase = apiName
+      .replace(/([A-Z])/g, '_$1')
+      .toLowerCase()
+      .replace(/^_/, '');
+    
+    // Simple pluralization
+    if (snakeCase.endsWith('y')) {
+      return snakeCase.slice(0, -1) + 'ies';
+    } else if (snakeCase.endsWith('s')) {
+      return snakeCase;
+    } else {
+      return snakeCase + 's';
+    }
+  }
+}

backend/src/rbac/dto/create-record-share.dto.ts

@@ -0,0 +1,19 @@
+import { IsString, IsBoolean, IsOptional, IsDateString } from 'class-validator';
+
+export class CreateRecordShareDto {
+  @IsString()
+  granteeUserId: string;
+
+  @IsBoolean()
+  canRead: boolean;
+
+  @IsBoolean()
+  canEdit: boolean;
+
+  @IsBoolean()
+  canDelete: boolean;
+
+  @IsOptional()
+  @IsDateString()
+  expiresAt?: string;
+}

backend/src/rbac/rbac.module.ts

@@ -1,8 +1,16 @@
 import { Module } from '@nestjs/common';
 import { RbacService } from './rbac.service';
+import { AbilityFactory } from './ability.factory';
+import { AuthorizationService } from './authorization.service';
+import { SetupRolesController } from './setup-roles.controller';
+import { SetupUsersController } from './setup-users.controller';
+import { RecordSharingController } from './record-sharing.controller';
+import { TenantModule } from '../tenant/tenant.module';
 
 @Module({
-  providers: [RbacService],
-  exports: [RbacService],
+  imports: [TenantModule],
+  controllers: [SetupRolesController, SetupUsersController, RecordSharingController],
+  providers: [RbacService, AbilityFactory, AuthorizationService],
+  exports: [RbacService, AbilityFactory, AuthorizationService],
 })
 export class RbacModule {}

backend/src/rbac/record-sharing.controller.ts

@@ -0,0 +1,324 @@
+import {
+  Controller,
+  Get,
+  Post,
+  Delete,
+  Param,
+  Body,
+  UseGuards,
+  ForbiddenException,
+} from '@nestjs/common';
+import { JwtAuthGuard } from '../auth/jwt-auth.guard';
+import { TenantId } from '../tenant/tenant.decorator';
+import { CurrentUser } from '../auth/current-user.decorator';
+import { TenantDatabaseService } from '../tenant/tenant-database.service';
+import { RecordShare } from '../models/record-share.model';
+import { ObjectDefinition } from '../models/object-definition.model';
+import { User } from '../models/user.model';
+import { AuthorizationService } from './authorization.service';
+import { CreateRecordShareDto } from './dto/create-record-share.dto';
+
+@Controller('runtime/objects/:objectApiName/records/:recordId/shares')
+@UseGuards(JwtAuthGuard)
+export class RecordSharingController {
+  constructor(
+    private tenantDbService: TenantDatabaseService,
+    private authService: AuthorizationService,
+  ) {}
+
+  @Get()
+  async getRecordShares(
+    @TenantId() tenantId: string,
+    @Param('objectApiName') objectApiName: string,
+    @Param('recordId') recordId: string,
+    @CurrentUser() currentUser: any,
+  ) {
+    const resolvedTenantId = await this.tenantDbService.resolveTenantId(tenantId);
+    const knex = await this.tenantDbService.getTenantKnexById(resolvedTenantId);
+
+    // Get object definition
+    const objectDef = await ObjectDefinition.query(knex)
+      .findOne({ apiName: objectApiName });
+
+    if (!objectDef) {
+      throw new Error('Object not found');
+    }
+
+    // Get the record to check ownership
+    const tableName = this.getTableName(objectDef.apiName);
+    const record = await knex(tableName)
+      .where({ id: recordId })
+      .first();
+
+    if (!record) {
+      throw new Error('Record not found');
+    }
+
+    // Only owner can view shares
+    if (record.ownerId !== currentUser.userId) {
+      // Check if user has modify all permission
+      const user: any = await User.query(knex)
+        .findById(currentUser.userId)
+        .withGraphFetched('roles.objectPermissions');
+
+      if (!user) {
+        throw new ForbiddenException('User not found');
+      }
+
+      const hasModifyAll = user.roles?.some(role =>
+        role.objectPermissions?.some(
+          perm => perm.objectDefinitionId === objectDef.id && perm.canModifyAll
+        )
+      );
+
+      if (!hasModifyAll) {
+        throw new ForbiddenException('Only the record owner or users with Modify All permission can view shares');
+      }
+    }
+
+    // Get all active shares for this record
+    const shares = await RecordShare.query(knex)
+      .where({ objectDefinitionId: objectDef.id, recordId })
+      .whereNull('revokedAt')
+      .where(builder => {
+        builder.whereNull('expiresAt').orWhere('expiresAt', '>', new Date());
+      })
+      .withGraphFetched('[granteeUser]')
+      .orderBy('createdAt', 'desc');
+
+    return shares;
+  }
+
+  @Post()
+  async createRecordShare(
+    @TenantId() tenantId: string,
+    @Param('objectApiName') objectApiName: string,
+    @Param('recordId') recordId: string,
+    @CurrentUser() currentUser: any,
+    @Body() data: CreateRecordShareDto,
+  ) {
+    const resolvedTenantId = await this.tenantDbService.resolveTenantId(tenantId);
+    const knex = await this.tenantDbService.getTenantKnexById(resolvedTenantId);
+
+    // Get object definition
+    const objectDef = await ObjectDefinition.query(knex)
+      .findOne({ apiName: objectApiName });
+
+    if (!objectDef) {
+      throw new Error('Object not found');
+    }
+
+    // Get the record to check ownership
+    const tableName = this.getTableName(objectDef.apiName);
+    const record = await knex(tableName)
+      .where({ id: recordId })
+      .first();
+
+    if (!record) {
+      throw new Error('Record not found');
+    }
+
+    // Check if user can share - either owner or has modify permissions
+    const canShare = await this.canUserShareRecord(
+      currentUser.userId,
+      record,
+      objectDef,
+      knex,
+    );
+
+    if (!canShare) {
+      throw new ForbiddenException('You do not have permission to share this record');
+    }
+
+    // Cannot share with self
+    if (data.granteeUserId === currentUser.userId) {
+      throw new Error('Cannot share record with yourself');
+    }
+
+    // Check if share already exists
+    const existingShare = await RecordShare.query(knex)
+      .where({
+        objectDefinitionId: objectDef.id,
+        recordId,
+        granteeUserId: data.granteeUserId,
+      })
+      .whereNull('revokedAt')
+      .first();
+
+    if (existingShare) {
+      // Update existing share
+      const updated = await RecordShare.query(knex)
+        .patchAndFetchById(existingShare.id, {
+          accessLevel: {
+            canRead: data.canRead,
+            canEdit: data.canEdit,
+            canDelete: data.canDelete,
+          },
+          // Convert ISO string to MySQL datetime format
+          expiresAt: data.expiresAt 
+            ? knex.raw('?', [new Date(data.expiresAt).toISOString().slice(0, 19).replace('T', ' ')]) 
+            : null,
+        } as any);
+
+      return RecordShare.query(knex)
+        .findById(updated.id)
+        .withGraphFetched('[granteeUser]');
+    }
+
+    // Create new share
+    const share = await RecordShare.query(knex).insertAndFetch({
+      objectDefinitionId: objectDef.id,
+      recordId,
+      granteeUserId: data.granteeUserId,
+      grantedByUserId: currentUser.userId,
+      accessLevel: {
+        canRead: data.canRead,
+        canEdit: data.canEdit,
+        canDelete: data.canDelete,
+      },
+      // Convert ISO string to MySQL datetime format: YYYY-MM-DD HH:MM:SS
+      expiresAt: data.expiresAt 
+        ? knex.raw('?', [new Date(data.expiresAt).toISOString().slice(0, 19).replace('T', ' ')]) 
+        : null,
+    } as any);
+
+    return RecordShare.query(knex)
+      .findById(share.id)
+      .withGraphFetched('[granteeUser]');
+  }
+
+  @Delete(':shareId')
+  async deleteRecordShare(
+    @TenantId() tenantId: string,
+    @Param('objectApiName') objectApiName: string,
+    @Param('recordId') recordId: string,
+    @Param('shareId') shareId: string,
+    @CurrentUser() currentUser: any,
+  ) {
+    const resolvedTenantId = await this.tenantDbService.resolveTenantId(tenantId);
+    const knex = await this.tenantDbService.getTenantKnexById(resolvedTenantId);
+
+    // Get object definition
+    const objectDef = await ObjectDefinition.query(knex)
+      .findOne({ apiName: objectApiName });
+
+    if (!objectDef) {
+      throw new Error('Object not found');
+    }
+
+    // Get the record to check ownership
+    const tableName = this.getTableName(objectDef.apiName);
+    const record = await knex(tableName)
+      .where({ id: recordId })
+      .first();
+
+    if (!record) {
+      throw new Error('Record not found');
+    }
+
+    // Only owner can revoke shares
+    if (record.ownerId !== currentUser.userId) {
+      // Check if user has modify all permission
+      const user: any = await User.query(knex)
+        .findById(currentUser.userId)
+        .withGraphFetched('roles.objectPermissions');
+
+      if (!user) {
+        throw new ForbiddenException('User not found');
+      }
+
+      const hasModifyAll = user.roles?.some(role =>
+        role.objectPermissions?.some(
+          perm => perm.objectDefinitionId === objectDef.id && perm.canModifyAll
+        )
+      );
+
+      if (!hasModifyAll) {
+        throw new ForbiddenException('Only the record owner or users with Modify All permission can revoke shares');
+      }
+    }
+
+    // Revoke the share (soft delete)
+    await RecordShare.query(knex)
+      .patchAndFetchById(shareId, {
+        revokedAt: knex.fn.now() as any,
+      });
+
+    return { success: true };
+  }
+
+  private async canUserShareRecord(
+    userId: string,
+    record: any,
+    objectDef: ObjectDefinition,
+    knex: any,
+  ): Promise<boolean> {
+    // Owner can always share
+    if (record.ownerId === userId) {
+      return true;
+    }
+
+    // Check if user has modify all or edit permissions
+    const user: any = await User.query(knex)
+      .findById(userId)
+      .withGraphFetched('roles.objectPermissions');
+
+    if (!user) {
+      return false;
+    }
+
+    // Check for canModifyAll permission
+    const hasModifyAll = user.roles?.some(role =>
+      role.objectPermissions?.some(
+        perm => perm.objectDefinitionId === objectDef.id && perm.canModifyAll
+      )
+    );
+
+    if (hasModifyAll) {
+      return true;
+    }
+
+    // Check for canEdit permission (user needs edit to share)
+    const hasEdit = user.roles?.some(role =>
+      role.objectPermissions?.some(
+        perm => perm.objectDefinitionId === objectDef.id && perm.canEdit
+      )
+    );
+
+    // If user has edit permission, check if they can actually edit this record
+    // by using the authorization service
+    if (hasEdit) {
+      try {
+        await this.authService.assertCanPerformAction(
+          'update',
+          objectDef,
+          record,
+          user,
+          knex,
+        );
+        return true;
+      } catch {
+        return false;
+      }
+    }
+
+    return false;
+  }
+
+  private getTableName(apiName: string): string {
+    // Convert CamelCase to snake_case and pluralize
+    const snakeCase = apiName
+      .replace(/([A-Z])/g, '_$1')
+      .toLowerCase()
+      .replace(/^_/, '');
+    
+    // Simple pluralization
+    if (snakeCase.endsWith('y')) {
+      return snakeCase.slice(0, -1) + 'ies';
+    } else if (snakeCase.endsWith('s')) {
+      return snakeCase + 'es';
+    } else {
+      return snakeCase + 's';
+    }
+  }
+}

backend/src/rbac/setup-roles.controller.ts

@@ -0,0 +1,141 @@
+import {
+  Controller,
+  Get,
+  Post,
+  Patch,
+  Delete,
+  Param,
+  Body,
+  UseGuards,
+} from '@nestjs/common';
+import { JwtAuthGuard } from '../auth/jwt-auth.guard';
+import { TenantId } from '../tenant/tenant.decorator';
+import { TenantDatabaseService } from '../tenant/tenant-database.service';
+import { Role } from '../models/role.model';
+
+@Controller('setup/roles')
+@UseGuards(JwtAuthGuard)
+export class SetupRolesController {
+  constructor(private tenantDbService: TenantDatabaseService) {}
+
+  @Get()
+  async getRoles(@TenantId() tenantId: string) {
+    const resolvedTenantId = await this.tenantDbService.resolveTenantId(tenantId);
+    const knex = await this.tenantDbService.getTenantKnexById(resolvedTenantId);
+    
+    return await Role.query(knex).select('*').orderBy('name', 'asc');
+  }
+
+  @Get(':id')
+  async getRole(
+    @TenantId() tenantId: string,
+    @Param('id') id: string,
+  ) {
+    const resolvedTenantId = await this.tenantDbService.resolveTenantId(tenantId);
+    const knex = await this.tenantDbService.getTenantKnexById(resolvedTenantId);
+    
+    return await Role.query(knex).findById(id).withGraphFetched('users');
+  }
+
+  @Post()
+  async createRole(
+    @TenantId() tenantId: string,
+    @Body() data: { name: string; description?: string; guardName?: string },
+  ) {
+    const resolvedTenantId = await this.tenantDbService.resolveTenantId(tenantId);
+    const knex = await this.tenantDbService.getTenantKnexById(resolvedTenantId);
+    
+    const role = await Role.query(knex).insert({
+      name: data.name,
+      description: data.description,
+      guardName: data.guardName || 'tenant',
+    });
+    
+    return role;
+  }
+
+  @Patch(':id')
+  async updateRole(
+    @TenantId() tenantId: string,
+    @Param('id') id: string,
+    @Body() data: { name?: string; description?: string; guardName?: string },
+  ) {
+    const resolvedTenantId = await this.tenantDbService.resolveTenantId(tenantId);
+    const knex = await this.tenantDbService.getTenantKnexById(resolvedTenantId);
+    
+    const updateData: any = {};
+    
+    if (data.name) updateData.name = data.name;
+    if (data.description !== undefined) updateData.description = data.description;
+    if (data.guardName) updateData.guardName = data.guardName;
+    
+    const role = await Role.query(knex).patchAndFetchById(id, updateData);
+    return role;
+  }
+
+  @Delete(':id')
+  async deleteRole(
+    @TenantId() tenantId: string,
+    @Param('id') id: string,
+  ) {
+    const resolvedTenantId = await this.tenantDbService.resolveTenantId(tenantId);
+    const knex = await this.tenantDbService.getTenantKnexById(resolvedTenantId);
+    
+    // Delete role user assignments first
+    await knex('user_roles').where({ roleId: id }).delete();
+    
+    // Delete role permissions
+    await knex('role_permissions').where({ roleId: id }).delete();
+    await knex('role_object_permissions').where({ roleId: id }).delete();
+    
+    // Delete the role
+    await Role.query(knex).deleteById(id);
+    
+    return { success: true };
+  }
+
+  @Post(':roleId/users')
+  async addUserToRole(
+    @TenantId() tenantId: string,
+    @Param('roleId') roleId: string,
+    @Body() data: { userId: string },
+  ) {
+    const resolvedTenantId = await this.tenantDbService.resolveTenantId(tenantId);
+    const knex = await this.tenantDbService.getTenantKnexById(resolvedTenantId);
+    
+    // Check if assignment already exists
+    const existing = await knex('user_roles')
+      .where({ userId: data.userId, roleId })
+      .first();
+    
+    if (existing) {
+      return { success: true, message: 'User already assigned' };
+    }
+    
+    await knex('user_roles').insert({
+      id: knex.raw('(UUID())'),
+      userId: data.userId,
+      roleId,
+      created_at: knex.fn.now(),
+      updated_at: knex.fn.now(),
+    });
+    
+    return { success: true };
+  }
+
+  @Delete(':roleId/users/:userId')
+  async removeUserFromRole(
+    @TenantId() tenantId: string,
+    @Param('roleId') roleId: string,
+    @Param('userId') userId: string,
+  ) {
+    const resolvedTenantId = await this.tenantDbService.resolveTenantId(tenantId);
+    const knex = await this.tenantDbService.getTenantKnexById(resolvedTenantId);
+    
+    await knex('user_roles')
+      .where({ userId, roleId })
+      .delete();
+    
+    return { success: true };
+  }
+}

backend/src/rbac/setup-users.controller.ts

@@ -0,0 +1,146 @@
+import {
+  Controller,
+  Get,
+  Post,
+  Patch,
+  Delete,
+  Param,
+  Body,
+  UseGuards,
+} from '@nestjs/common';
+import { JwtAuthGuard } from '../auth/jwt-auth.guard';
+import { TenantId } from '../tenant/tenant.decorator';
+import { TenantDatabaseService } from '../tenant/tenant-database.service';
+import { User } from '../models/user.model';
+import * as bcrypt from 'bcrypt';
+
+@Controller('setup/users')
+@UseGuards(JwtAuthGuard)
+export class SetupUsersController {
+  constructor(private tenantDbService: TenantDatabaseService) {}
+
+  @Get()
+  async getUsers(@TenantId() tenantId: string) {
+    const resolvedTenantId = await this.tenantDbService.resolveTenantId(tenantId);
+    const knex = await this.tenantDbService.getTenantKnexById(resolvedTenantId);
+    return await User.query(knex).withGraphFetched('roles');
+  }
+
+  @Get(':id')
+  async getUser(
+    @TenantId() tenantId: string,
+    @Param('id') id: string,
+  ) {
+    const resolvedTenantId = await this.tenantDbService.resolveTenantId(tenantId);
+    const knex = await this.tenantDbService.getTenantKnexById(resolvedTenantId);
+    return await User.query(knex).findById(id).withGraphFetched('roles');
+  }
+
+  @Post()
+  async createUser(
+    @TenantId() tenantId: string,
+    @Body() data: { email: string; password: string; firstName?: string; lastName?: string },
+  ) {
+    const resolvedTenantId = await this.tenantDbService.resolveTenantId(tenantId);
+    const knex = await this.tenantDbService.getTenantKnexById(resolvedTenantId);
+    
+    // Hash password
+    const hashedPassword = await bcrypt.hash(data.password, 10);
+    
+    const user = await User.query(knex).insert({
+      email: data.email,
+      password: hashedPassword,
+      firstName: data.firstName,
+      lastName: data.lastName,
+      isActive: true,
+    });
+    
+    return user;
+  }
+
+  @Patch(':id')
+  async updateUser(
+    @TenantId() tenantId: string,
+    @Param('id') id: string,
+    @Body() data: { email?: string; password?: string; firstName?: string; lastName?: string },
+  ) {
+    const resolvedTenantId = await this.tenantDbService.resolveTenantId(tenantId);
+    const knex = await this.tenantDbService.getTenantKnexById(resolvedTenantId);
+    
+    const updateData: any = {};
+    
+    if (data.email) updateData.email = data.email;
+    if (data.firstName !== undefined) updateData.firstName = data.firstName;
+    if (data.lastName !== undefined) updateData.lastName = data.lastName;
+    
+    // Hash password if provided
+    if (data.password) {
+      updateData.password = await bcrypt.hash(data.password, 10);
+    }
+    
+    const user = await User.query(knex).patchAndFetchById(id, updateData);
+    return user;
+  }
+
+  @Delete(':id')
+  async deleteUser(
+    @TenantId() tenantId: string,
+    @Param('id') id: string,
+  ) {
+    const resolvedTenantId = await this.tenantDbService.resolveTenantId(tenantId);
+    const knex = await this.tenantDbService.getTenantKnexById(resolvedTenantId);
+    
+    // Delete user role assignments first
+    await knex('user_roles').where({ userId: id }).delete();
+    
+    // Delete the user
+    await User.query(knex).deleteById(id);
+    
+    return { success: true };
+  }
+
+  @Post(':userId/roles')
+  async addRoleToUser(
+    @TenantId() tenantId: string,
+    @Param('userId') userId: string,
+    @Body() data: { roleId: string },
+  ) {
+    const resolvedTenantId = await this.tenantDbService.resolveTenantId(tenantId);
+    const knex = await this.tenantDbService.getTenantKnexById(resolvedTenantId);
+    
+    // Check if assignment already exists
+    const existing = await knex('user_roles')
+      .where({ userId, roleId: data.roleId })
+      .first();
+    
+    if (existing) {
+      return { success: true, message: 'Role already assigned' };
+    }
+    
+    await knex('user_roles').insert({
+      id: knex.raw('(UUID())'),
+      userId,
+      roleId: data.roleId,
+      created_at: knex.fn.now(),
+      updated_at: knex.fn.now(),
+    });
+    
+    return { success: true };
+  }
+
+  @Delete(':userId/roles/:roleId')
+  async removeRoleFromUser(
+    @TenantId() tenantId: string,
+    @Param('userId') userId: string,
+    @Param('roleId') roleId: string,
+  ) {
+    const resolvedTenantId = await this.tenantDbService.resolveTenantId(tenantId);
+    const knex = await this.tenantDbService.getTenantKnexById(resolvedTenantId);
+    
+    await knex('user_roles')
+      .where({ userId, roleId })
+      .delete();
+    
+    return { success: true };
+  }
+}

backend/src/tenant/central-admin.controller.ts

@@ -0,0 +1,368 @@
+import {
+  Controller,
+  Get,
+  Post,
+  Put,
+  Delete,
+  Body,
+  Param,
+  Query,
+  UseGuards,
+  UnauthorizedException,
+  Req,
+} from '@nestjs/common';
+import { JwtAuthGuard } from '../auth/jwt-auth.guard';
+import { CentralTenant, CentralDomain, CentralUser } from '../models/central.model';
+import { getCentralKnex, initCentralModels } from './central-database.service';
+import { TenantProvisioningService } from './tenant-provisioning.service';
+import { TenantDatabaseService } from './tenant-database.service';
+import * as bcrypt from 'bcrypt';
+
+/**
+ * Controller for managing central database entities (tenants, domains, users)
+ * Only accessible when logged in as central admin
+ */
+@Controller('central')
+@UseGuards(JwtAuthGuard)
+export class CentralAdminController {
+  constructor(
+    private readonly provisioningService: TenantProvisioningService,
+    private readonly tenantDbService: TenantDatabaseService,
+  ) {
+    // Initialize central models on controller creation
+    initCentralModels();
+  }
+  
+  private checkCentralAdmin(req: any) {
+    const subdomain = req.raw?.subdomain;
+    const centralSubdomains = (process.env.CENTRAL_SUBDOMAINS || 'central,admin').split(',');
+    
+    if (!subdomain || !centralSubdomains.includes(subdomain)) {
+      throw new UnauthorizedException('This endpoint is only accessible to central administrators');
+    }
+  }
+
+  // ==================== TENANTS ====================
+  
+  @Get('tenants')
+  async getTenants(@Req() req: any) {
+    this.checkCentralAdmin(req);
+    return CentralTenant.query().withGraphFetched('domains');
+  }
+
+  @Get('tenants/:id')
+  async getTenant(@Req() req: any, @Param('id') id: string) {
+    this.checkCentralAdmin(req);
+    return CentralTenant.query()
+      .findById(id)
+      .withGraphFetched('domains');
+  }
+
+  @Post('tenants')
+  async createTenant(
+    @Req() req: any,
+    @Body() data: {
+      name: string;
+      slug?: string;
+      primaryDomain: string;
+      dbHost?: string;
+      dbPort?: number;
+    },
+  ) {
+    this.checkCentralAdmin(req);
+    
+    // Use the provisioning service to create tenant with database and migrations
+    const result = await this.provisioningService.provisionTenant({
+      name: data.name,
+      slug: data.slug || data.name.toLowerCase().replace(/[^a-z0-9]+/g, '-').replace(/^-|-$/g, ''),
+      primaryDomain: data.primaryDomain,
+      dbHost: data.dbHost,
+      dbPort: data.dbPort,
+    });
+    
+    // Return the created tenant
+    return CentralTenant.query()
+      .findById(result.tenantId)
+      .withGraphFetched('domains');
+  }
+
+  @Put('tenants/:id')
+  async updateTenant(
+    @Req() req: any,
+    @Param('id') id: string,
+    @Body() data: {
+      name?: string;
+      slug?: string;
+      dbHost?: string;
+      dbPort?: number;
+      dbName?: string;
+      dbUsername?: string;
+      status?: string;
+    },
+  ) {
+    this.checkCentralAdmin(req);
+    return CentralTenant.query()
+      .patchAndFetchById(id, data);
+  }
+
+  @Delete('tenants/:id')
+  async deleteTenant(@Req() req: any, @Param('id') id: string) {
+    this.checkCentralAdmin(req);
+    await CentralTenant.query().deleteById(id);
+    return { success: true };
+  }
+
+  // Get users for a specific tenant
+  @Get('tenants/:id/users')
+  async getTenantUsers(@Req() req: any, @Param('id') tenantId: string) {
+    this.checkCentralAdmin(req);
+    
+    try {
+      // Get tenant to verify it exists
+      const tenant = await CentralTenant.query().findById(tenantId);
+      
+      if (!tenant) {
+        throw new UnauthorizedException('Tenant not found');
+      }
+      
+      // Connect to tenant database using tenant ID directly
+      const tenantKnex = await this.tenantDbService.getTenantKnexById(tenantId);
+      
+      // Fetch users from tenant database
+      const users = await tenantKnex('users').select('*');
+      
+      // Remove password from response
+      return users.map(({ password, ...user }) => user);
+    } catch (error) {
+      console.error('Error fetching tenant users:', error);
+      throw error;
+    }
+  }
+
+  // Create a user in a specific tenant
+  @Post('tenants/:id/users')
+  async createTenantUser(
+    @Req() req: any,
+    @Param('id') tenantId: string,
+    @Body() data: {
+      email: string;
+      password: string;
+      firstName?: string;
+      lastName?: string;
+    },
+  ) {
+    this.checkCentralAdmin(req);
+    
+    try {
+      // Get tenant to verify it exists
+      const tenant = await CentralTenant.query().findById(tenantId);
+      
+      if (!tenant) {
+        throw new UnauthorizedException('Tenant not found');
+      }
+      
+      // Connect to tenant database using tenant ID directly
+      const tenantKnex = await this.tenantDbService.getTenantKnexById(tenantId);
+      
+      // Hash password
+      const hashedPassword = await bcrypt.hash(data.password, 10);
+      
+      // Generate UUID for the new user
+      const userId = require('crypto').randomUUID();
+      
+      // Create user in tenant database
+      await tenantKnex('users').insert({
+        id: userId,
+        email: data.email,
+        password: hashedPassword,
+        firstName: data.firstName || null,
+        lastName: data.lastName || null,
+        created_at: new Date(),
+        updated_at: new Date(),
+      });
+      
+      // Fetch and return the created user
+      const user = await tenantKnex('users').where('id', userId).first();
+      
+      if (!user) {
+        throw new Error('Failed to create user');
+      }
+      
+      const { password, ...userWithoutPassword } = user;
+      
+      return userWithoutPassword;
+    } catch (error) {
+      console.error('Error creating tenant user:', error);
+      throw error;
+    }
+  }
+
+  // ==================== DOMAINS ====================
+  
+  @Get('domains')
+  async getDomains(
+    @Req() req: any,
+    @Query('parentId') parentId?: string,
+    @Query('tenantId') tenantId?: string,
+  ) {
+    this.checkCentralAdmin(req);
+    
+    let query = CentralDomain.query().withGraphFetched('tenant');
+    
+    // Filter by parent/tenant ID if provided (for related lists)
+    if (parentId || tenantId) {
+      query = query.where('tenantId', parentId || tenantId);
+    }
+    
+    return query;
+  }
+
+  @Get('domains/:id')
+  async getDomain(@Req() req: any, @Param('id') id: string) {
+    this.checkCentralAdmin(req);
+    return CentralDomain.query()
+      .findById(id)
+      .withGraphFetched('tenant');
+  }
+
+  @Post('domains')
+  async createDomain(
+    @Req() req: any,
+    @Body() data: {
+      domain: string;
+      tenantId: string;
+      isPrimary?: boolean;
+    },
+  ) {
+    this.checkCentralAdmin(req);
+    return CentralDomain.query().insert({
+      domain: data.domain,
+      tenantId: data.tenantId,
+      isPrimary: data.isPrimary || false,
+    });
+  }
+
+  @Put('domains/:id')
+  async updateDomain(
+    @Req() req: any,
+    @Param('id') id: string,
+    @Body() data: {
+      domain?: string;
+      tenantId?: string;
+      isPrimary?: boolean;
+    },
+  ) {
+    this.checkCentralAdmin(req);
+    return CentralDomain.query()
+      .patchAndFetchById(id, data);
+  }
+
+  @Delete('domains/:id')
+  async deleteDomain(@Req() req: any, @Param('id') id: string) {
+    this.checkCentralAdmin(req);
+    
+    // Get domain info before deleting to invalidate cache
+    const domain = await CentralDomain.query().findById(id);
+    
+    // Delete the domain
+    await CentralDomain.query().deleteById(id);
+    
+    // Invalidate tenant connection cache for this domain
+    if (domain) {
+      this.tenantDbService.removeTenantConnection(domain.domain);
+    }
+    
+    return { success: true };
+  }
+
+  // ==================== USERS (Central Admin Users) ====================
+  
+  @Get('users')
+  async getUsers(@Req() req: any) {
+    this.checkCentralAdmin(req);
+    const users = await CentralUser.query();
+    // Remove password from response
+    return users.map(({ password, ...user }) => user);
+  }
+
+  @Get('users/:id')
+  async getUser(@Req() req: any, @Param('id') id: string) {
+    this.checkCentralAdmin(req);
+    const user = await CentralUser.query().findById(id);
+    
+    if (!user) {
+      throw new UnauthorizedException('User not found');
+    }
+    
+    const { password, ...userWithoutPassword } = user;
+    return userWithoutPassword;
+  }
+
+  @Post('users')
+  async createUser(
+    @Req() req: any,
+    @Body() data: {
+      email: string;
+      password: string;
+      firstName?: string;
+      lastName?: string;
+      role?: string;
+      isActive?: boolean;
+    },
+  ) {
+    this.checkCentralAdmin(req);
+    
+    const hashedPassword = await bcrypt.hash(data.password, 10);
+    
+    const user = await CentralUser.query().insert({
+      email: data.email,
+      password: hashedPassword,
+      firstName: data.firstName || null,
+      lastName: data.lastName || null,
+      role: data.role || 'admin',
+      isActive: data.isActive !== undefined ? data.isActive : true,
+    });
+    
+    const { password, ...userWithoutPassword } = user;
+    return userWithoutPassword;
+  }
+
+  @Put('users/:id')
+  async updateUser(
+    @Req() req: any,
+    @Param('id') id: string,
+    @Body() data: {
+      email?: string;
+      password?: string;
+      firstName?: string;
+      lastName?: string;
+      role?: string;
+      isActive?: boolean;
+    },
+  ) {
+    this.checkCentralAdmin(req);
+    
+    const updateData: any = { ...data };
+    
+    // Hash password if provided
+    if (data.password) {
+      updateData.password = await bcrypt.hash(data.password, 10);
+    } else {
+      // Remove password from update if not provided
+      delete updateData.password;
+    }
+    
+    const user = await CentralUser.query()
+      .patchAndFetchById(id, updateData);
+    
+    const { password, ...userWithoutPassword } = user;
+    return userWithoutPassword;
+  }
+
+  @Delete('users/:id')
+  async deleteUser(@Req() req: any, @Param('id') id: string) {
+    this.checkCentralAdmin(req);
+    await CentralUser.query().deleteById(id);
+    return { success: true };
+  }
+}

backend/src/tenant/central-database.service.ts

@@ -0,0 +1,43 @@
+import Knex from 'knex';
+import { Model } from 'objection';
+import { CentralTenant, CentralDomain, CentralUser } from '../models/central.model';
+
+let centralKnex: Knex.Knex | null = null;
+
+/**
+ * Get or create a Knex instance for the central database
+ * This is used for Objection models that work with central entities
+ */
+export function getCentralKnex(): Knex.Knex {
+  if (!centralKnex) {
+    const centralDbUrl = process.env.CENTRAL_DATABASE_URL;
+    
+    if (!centralDbUrl) {
+      throw new Error('CENTRAL_DATABASE_URL environment variable is not set');
+    }
+
+    centralKnex = Knex({
+      client: 'mysql2',
+      connection: centralDbUrl,
+      pool: {
+        min: 2,
+        max: 10,
+      },
+    });
+
+    // Bind Objection models to this knex instance
+    Model.knex(centralKnex);
+  }
+
+  return centralKnex;
+}
+
+/**
+ * Initialize central models with the knex instance
+ */
+export function initCentralModels() {
+  const knex = getCentralKnex();
+  CentralTenant.knex(knex);
+  CentralDomain.knex(knex);
+  CentralUser.knex(knex);
+}

backend/src/tenant/tenant-database.service.ts

@@ -0,0 +1,267 @@
+import { Injectable, Logger } from '@nestjs/common';
+import { Knex, knex } from 'knex';
+import { getCentralPrisma } from '../prisma/central-prisma.service';
+import * as crypto from 'crypto';
+
+@Injectable()
+export class TenantDatabaseService {
+  private readonly logger = new Logger(TenantDatabaseService.name);
+  private tenantConnections: Map<string, Knex> = new Map();
+
+  /**
+   * Get tenant database connection by domain (for subdomain-based authentication)
+   * This is used when users log in via tenant subdomains
+   */
+  async getTenantKnexByDomain(domain: string): Promise<Knex> {
+    const cacheKey = `domain:${domain}`;
+    
+    // Check if we have a cached connection
+    if (this.tenantConnections.has(cacheKey)) {
+      // Validate the domain still exists before returning cached connection
+      const centralPrisma = getCentralPrisma();
+      
+      try {
+        const domainRecord = await centralPrisma.domain.findUnique({
+          where: { domain },
+        });
+        
+        // If domain no longer exists, remove cached connection
+        if (!domainRecord) {
+          this.logger.warn(`Domain ${domain} no longer exists, removing cached connection`);
+          await this.disconnectTenant(cacheKey);
+          throw new Error(`Domain ${domain} not found`);
+        }
+      } catch (error) {
+        // If domain doesn't exist, remove from cache and re-throw
+        if (error.message.includes('not found')) {
+          throw error;
+        }
+        // For other errors, log but continue with cached connection
+        this.logger.warn(`Error validating domain ${domain}:`, error.message);
+      }
+      
+      return this.tenantConnections.get(cacheKey);
+    }
+
+    const centralPrisma = getCentralPrisma();
+    
+    // Find tenant by domain
+    const domainRecord = await centralPrisma.domain.findUnique({
+      where: { domain },
+      include: { tenant: true },
+    });
+
+    if (!domainRecord) {
+      throw new Error(`Domain ${domain} not found`);
+    }
+
+    const tenant = domainRecord.tenant;
+    this.logger.log(`Found tenant by domain: ${domain} -> ${tenant.name}`);
+
+    if (tenant.status !== 'active') {
+      throw new Error(`Tenant ${tenant.name} is not active`);
+    }
+
+    // Create connection and cache it
+    const tenantKnex = await this.createTenantConnection(tenant);
+    this.tenantConnections.set(cacheKey, tenantKnex);
+    
+    return tenantKnex;
+  }
+
+  /**
+   * Get tenant database connection by tenant ID (for central admin operations)
+   * This is used when central admin needs to access tenant databases
+   */
+  async getTenantKnexById(tenantId: string): Promise<Knex> {
+    const cacheKey = `id:${tenantId}`;
+    
+    // Check if we have a cached connection (no validation needed for ID-based lookups)
+    if (this.tenantConnections.has(cacheKey)) {
+      return this.tenantConnections.get(cacheKey);
+    }
+
+    const centralPrisma = getCentralPrisma();
+    
+    // Find tenant by ID
+    const tenant = await centralPrisma.tenant.findUnique({
+      where: { id: tenantId },
+    });
+
+    if (!tenant) {
+      throw new Error(`Tenant ${tenantId} not found`);
+    }
+
+    if (tenant.status !== 'active') {
+      throw new Error(`Tenant ${tenant.name} is not active`);
+    }
+
+    this.logger.log(`Connecting to tenant database by ID: ${tenant.name}`);
+
+    // Create connection and cache it
+    const tenantKnex = await this.createTenantConnection(tenant);
+    this.tenantConnections.set(cacheKey, tenantKnex);
+    
+    return tenantKnex;
+  }
+
+  /**
+   * Legacy method - delegates to domain-based lookup
+   * @deprecated Use getTenantKnexByDomain or getTenantKnexById instead
+   */
+  async getTenantKnex(tenantIdOrSlug: string): Promise<Knex> {
+    // Assume it's a domain if it contains a dot
+    return this.getTenantKnexByDomain(tenantIdOrSlug);
+  }
+
+  /**
+   * Create a new Knex connection to a tenant database
+   */
+  private async createTenantConnection(tenant: any): Promise<Knex> {
+    // Decrypt password
+    const decryptedPassword = this.decryptPassword(tenant.dbPassword);
+
+    const tenantKnex = knex({
+      client: 'mysql2',
+      connection: {
+        host: tenant.dbHost,
+        port: tenant.dbPort,
+        user: tenant.dbUsername,
+        password: decryptedPassword,
+        database: tenant.dbName,
+      },
+      pool: {
+        min: 2,
+        max: 10,
+      },
+    });
+
+    // Test connection
+    try {
+      await tenantKnex.raw('SELECT 1');
+      this.logger.log(`Connected to tenant database: ${tenant.dbName}`);
+    } catch (error) {
+      this.logger.error(
+        `Failed to connect to tenant database: ${tenant.dbName}`,
+        error,
+      );
+      throw error;
+    }
+
+    return tenantKnex;
+  }
+
+  async getTenantByDomain(domain: string): Promise<any> {
+    const centralPrisma = getCentralPrisma();
+    const domainRecord = await centralPrisma.domain.findUnique({
+      where: { domain },
+      include: { tenant: true },
+    });
+
+    if (!domainRecord) {
+      throw new Error(`Domain ${domain} not found`);
+    }
+
+    if (domainRecord.tenant.status !== 'active') {
+      throw new Error(`Tenant for domain ${domain} is not active`);
+    }
+
+    return domainRecord.tenant;
+  }
+
+  /**
+   * Resolve tenant by ID or slug
+   * Tries ID first, then falls back to slug
+   */
+  async resolveTenantId(idOrSlug: string): Promise<string> {
+    const centralPrisma = getCentralPrisma();
+    
+    // Try by ID first
+    let tenant = await centralPrisma.tenant.findUnique({
+      where: { id: idOrSlug },
+    });
+
+    // If not found, try by slug
+    if (!tenant) {
+      tenant = await centralPrisma.tenant.findUnique({
+        where: { slug: idOrSlug },
+      });
+    }
+
+    if (!tenant) {
+      throw new Error(`Tenant ${idOrSlug} not found`);
+    }
+
+    if (tenant.status !== 'active') {
+      throw new Error(`Tenant ${tenant.name} is not active`);
+    }
+
+    return tenant.id;
+  }
+
+  async disconnectTenant(tenantId: string) {
+    const connection = this.tenantConnections.get(tenantId);
+    if (connection) {
+      await connection.destroy();
+      this.tenantConnections.delete(tenantId);
+      this.logger.log(`Disconnected tenant: ${tenantId}`);
+    }
+  }
+
+  removeTenantConnection(tenantId: string) {
+    this.tenantConnections.delete(tenantId);
+    this.logger.log(`Removed tenant connection from cache: ${tenantId}`);
+  }
+
+  async disconnectAll() {
+    for (const [tenantId, connection] of this.tenantConnections.entries()) {
+      await connection.destroy();
+    }
+    this.tenantConnections.clear();
+    this.logger.log('Disconnected all tenant connections');
+  }
+
+  encryptPassword(password: string): string {
+    const algorithm = 'aes-256-cbc';
+    const key = Buffer.from(process.env.ENCRYPTION_KEY, 'hex');
+    const iv = crypto.randomBytes(16);
+    const cipher = crypto.createCipheriv(algorithm, key, iv);
+    let encrypted = cipher.update(password, 'utf8', 'hex');
+    encrypted += cipher.final('hex');
+    return iv.toString('hex') + ':' + encrypted;
+  }
+
+  private decryptPassword(encryptedPassword: string): string {
+    const algorithm = 'aes-256-cbc';
+    const key = Buffer.from(process.env.ENCRYPTION_KEY, 'hex');
+    const parts = encryptedPassword.split(':');
+    const iv = Buffer.from(parts[0], 'hex');
+    const encrypted = parts[1];
+    const decipher = crypto.createDecipheriv(algorithm, key, iv);
+    let decrypted = decipher.update(encrypted, 'hex', 'utf8');
+    decrypted += decipher.final('utf8');
+    return decrypted;
+  }
+
+  /**
+   * Encrypt integrations config JSON object
+   * @param config - Plain object containing integration credentials
+   * @returns Encrypted JSON string
+   */
+  encryptIntegrationsConfig(config: any): string {
+    if (!config) return null;
+    const jsonString = JSON.stringify(config);
+    return this.encryptPassword(jsonString);
+  }
+
+  /**
+   * Decrypt integrations config JSON string
+   * @param encryptedConfig - Encrypted JSON string
+   * @returns Plain object with integration credentials
+   */
+  decryptIntegrationsConfig(encryptedConfig: string): any {
+    if (!encryptedConfig) return null;
+    const decrypted = this.decryptPassword(encryptedConfig);
+    return JSON.parse(decrypted);
+  }
+}

backend/src/tenant/tenant-provisioning.controller.ts

@@ -0,0 +1,36 @@
+import {
+  Controller,
+  Post,
+  Delete,
+  Body,
+  Param,
+  UseGuards,
+} from '@nestjs/common';
+import { TenantProvisioningService } from './tenant-provisioning.service';
+
+@Controller('setup/tenants')
+export class TenantProvisioningController {
+  constructor(
+    private readonly provisioningService: TenantProvisioningService,
+  ) {}
+
+  @Post()
+  async createTenant(
+    @Body()
+    data: {
+      name: string;
+      slug: string;
+      primaryDomain: string;
+      dbHost?: string;
+      dbPort?: number;
+    },
+  ) {
+    return this.provisioningService.provisionTenant(data);
+  }
+
+  @Delete(':tenantId')
+  async deleteTenant(@Param('tenantId') tenantId: string) {
+    await this.provisioningService.deprovisionTenant(tenantId);
+    return { success: true };
+  }
+}

backend/src/tenant/tenant-provisioning.service.ts

@@ -0,0 +1,344 @@
+import { Injectable, Logger } from '@nestjs/common';
+import { TenantDatabaseService } from './tenant-database.service';
+import * as knex from 'knex';
+import * as crypto from 'crypto';
+import { getCentralPrisma } from '../prisma/central-prisma.service';
+
+@Injectable()
+export class TenantProvisioningService {
+  private readonly logger = new Logger(TenantProvisioningService.name);
+
+  constructor(private readonly tenantDbService: TenantDatabaseService) {}
+
+  /**
+   * Provision a new tenant with database and default data
+   */
+  async provisionTenant(data: {
+    name: string;
+    slug: string;
+    primaryDomain: string;
+    dbHost?: string;
+    dbPort?: number;
+  }) {
+    const dbHost = data.dbHost || process.env.DB_HOST || 'platform-db';
+    const dbPort = data.dbPort || parseInt(process.env.DB_PORT || '3306');
+    const dbName = `tenant_${data.slug}`;
+    const dbUsername = `tenant_${data.slug}_user`;
+    const dbPassword = this.generateSecurePassword();
+
+    this.logger.log(`Provisioning tenant: ${data.name} (${data.slug})`);
+
+    try {
+      // Step 1: Create MySQL database and user
+      await this.createTenantDatabase(
+        dbHost,
+        dbPort,
+        dbName,
+        dbUsername,
+        dbPassword,
+      );
+
+      // Step 2: Run migrations on new tenant database
+      await this.runTenantMigrations(
+        dbHost,
+        dbPort,
+        dbName,
+        dbUsername,
+        dbPassword,
+      );
+
+      // Step 3: Store tenant info in central database
+      const centralPrisma = getCentralPrisma();
+      const tenant = await centralPrisma.tenant.create({
+        data: {
+          name: data.name,
+          slug: data.slug,
+          dbHost,
+          dbPort,
+          dbName,
+          dbUsername,
+          dbPassword: this.tenantDbService.encryptPassword(dbPassword),
+          status: 'active',
+          domains: {
+            create: {
+              domain: data.primaryDomain,
+              isPrimary: true,
+            },
+          },
+        },
+        include: {
+          domains: true,
+        },
+      });
+
+      this.logger.log(`Tenant provisioned successfully: ${tenant.id}`);
+
+      // Step 4: Seed default data (admin user, default roles, etc.)
+      await this.seedDefaultData(tenant.id);
+
+      return {
+        tenantId: tenant.id,
+        dbName,
+        dbUsername,
+        dbPassword, // Return for initial setup, should be stored securely
+      };
+    } catch (error) {
+      this.logger.error(`Failed to provision tenant: ${data.slug}`, error);
+      // Attempt cleanup
+      await this.rollbackProvisioning(dbHost, dbPort, dbName, dbUsername).catch(
+        (cleanupError) => {
+          this.logger.error(
+            'Failed to cleanup after provisioning error',
+            cleanupError,
+          );
+        },
+      );
+      throw error;
+    }
+  }
+
+  /**
+   * Create MySQL database and user
+   */
+  private async createTenantDatabase(
+    host: string,
+    port: number,
+    dbName: string,
+    username: string,
+    password: string,
+  ) {
+    // Connect as root to create database and user
+    const rootKnex = knex.default({
+      client: 'mysql2',
+      connection: {
+        host,
+        port,
+        user: process.env.DB_ROOT_USER || 'root',
+        password: process.env.DB_ROOT_PASSWORD || 'root',
+      },
+    });
+
+    try {
+      // Create database
+      await rootKnex.raw(
+        `CREATE DATABASE IF NOT EXISTS \`${dbName}\` CHARACTER SET utf8mb4 COLLATE utf8mb4_unicode_ci`,
+      );
+      this.logger.log(`Database created: ${dbName}`);
+
+      // Create user and grant privileges
+      await rootKnex.raw(
+        `CREATE USER IF NOT EXISTS '${username}'@'%' IDENTIFIED BY '${password}'`,
+      );
+      await rootKnex.raw(
+        `GRANT ALL PRIVILEGES ON \`${dbName}\`.* TO '${username}'@'%'`,
+      );
+      await rootKnex.raw('FLUSH PRIVILEGES');
+      this.logger.log(`User created: ${username}`);
+    } finally {
+      await rootKnex.destroy();
+    }
+  }
+
+  /**
+   * Run Knex migrations on tenant database
+   */
+  private async runTenantMigrations(
+    host: string,
+    port: number,
+    dbName: string,
+    username: string,
+    password: string,
+  ) {
+    const tenantKnex = knex.default({
+      client: 'mysql2',
+      connection: {
+        host,
+        port,
+        database: dbName,
+        user: username,
+        password,
+      },
+      migrations: {
+        directory: './migrations/tenant',
+        tableName: 'knex_migrations',
+      },
+    });
+
+    try {
+      await tenantKnex.migrate.latest();
+      this.logger.log(`Migrations completed for database: ${dbName}`);
+    } finally {
+      await tenantKnex.destroy();
+    }
+  }
+
+  /**
+   * Seed default data for new tenant
+   */
+  private async seedDefaultData(tenantId: string) {
+    const tenantKnex = await this.tenantDbService.getTenantKnexById(tenantId);
+
+    try {
+      // Create default roles
+      const adminRoleId = crypto.randomUUID();
+      await tenantKnex('roles').insert({
+        id: adminRoleId,
+        name: 'Admin',
+        guardName: 'api',
+        description: 'Full system administrator access',
+        created_at: tenantKnex.fn.now(),
+        updated_at: tenantKnex.fn.now(),
+      });
+
+      const userRoleId = crypto.randomUUID();
+      await tenantKnex('roles').insert({
+        id: userRoleId,
+        name: 'User',
+        guardName: 'api',
+        description: 'Standard user access',
+        created_at: tenantKnex.fn.now(),
+        updated_at: tenantKnex.fn.now(),
+      });
+
+      // Create default permissions
+      const permissions = [
+        { name: 'manage_users', description: 'Manage users' },
+        { name: 'manage_roles', description: 'Manage roles and permissions' },
+        { name: 'manage_apps', description: 'Manage applications' },
+        { name: 'manage_objects', description: 'Manage object definitions' },
+        { name: 'view_data', description: 'View data' },
+        { name: 'create_data', description: 'Create data' },
+        { name: 'edit_data', description: 'Edit data' },
+        { name: 'delete_data', description: 'Delete data' },
+      ];
+
+      for (const perm of permissions) {
+        await tenantKnex('permissions').insert({
+          id: crypto.randomUUID(),
+          name: perm.name,
+          guardName: 'api',
+          description: perm.description,
+          created_at: tenantKnex.fn.now(),
+          updated_at: tenantKnex.fn.now(),
+        });
+      }
+
+      // Grant all permissions to Admin role
+      const allPermissions = await tenantKnex('permissions').select('id');
+      for (const perm of allPermissions) {
+        await tenantKnex('role_permissions').insert({
+          id: crypto.randomUUID(),
+          roleId: adminRoleId,
+          permissionId: perm.id,
+          created_at: tenantKnex.fn.now(),
+          updated_at: tenantKnex.fn.now(),
+        });
+      }
+
+      // Grant view/create/edit permissions to User role
+      const userPermissions = await tenantKnex('permissions')
+        .whereIn('name', ['view_data', 'create_data', 'edit_data'])
+        .select('id');
+      for (const perm of userPermissions) {
+        await tenantKnex('role_permissions').insert({
+          id: crypto.randomUUID(),
+          roleId: userRoleId,
+          permissionId: perm.id,
+          created_at: tenantKnex.fn.now(),
+          updated_at: tenantKnex.fn.now(),
+        });
+      }
+
+      this.logger.log(`Default data seeded for tenant: ${tenantId}`);
+    } catch (error) {
+      this.logger.error(
+        `Failed to seed default data for tenant: ${tenantId}`,
+        error,
+      );
+      throw error;
+    }
+  }
+
+  /**
+   * Rollback provisioning in case of error
+   */
+  private async rollbackProvisioning(
+    host: string,
+    port: number,
+    dbName: string,
+    username: string,
+  ) {
+    const rootKnex = knex.default({
+      client: 'mysql2',
+      connection: {
+        host,
+        port,
+        user: process.env.DB_ROOT_USER || 'root',
+        password: process.env.DB_ROOT_PASSWORD || 'root',
+      },
+    });
+
+    try {
+      await rootKnex.raw(`DROP DATABASE IF EXISTS \`${dbName}\``);
+      await rootKnex.raw(`DROP USER IF EXISTS '${username}'@'%'`);
+      this.logger.log(`Rolled back provisioning for database: ${dbName}`);
+    } finally {
+      await rootKnex.destroy();
+    }
+  }
+
+  /**
+   * Generate secure random password
+   */
+  private generateSecurePassword(): string {
+    return crypto.randomBytes(32).toString('base64').slice(0, 32);
+  }
+
+  /**
+   * Deprovision a tenant (delete database and central record)
+   */
+  async deprovisionTenant(tenantId: string) {
+    const centralPrisma = getCentralPrisma();
+    const tenant = await centralPrisma.tenant.findUnique({
+      where: { id: tenantId },
+    });
+
+    if (!tenant) {
+      throw new Error(`Tenant not found: ${tenantId}`);
+    }
+
+    try {
+      // Delete tenant database
+      const rootKnex = knex.default({
+        client: 'mysql2',
+        connection: {
+          host: tenant.dbHost,
+          port: tenant.dbPort,
+          user: process.env.DB_ROOT_USER || 'root',
+          password: process.env.DB_ROOT_PASSWORD || 'root',
+        },
+      });
+
+      try {
+        await rootKnex.raw(`DROP DATABASE IF EXISTS \`${tenant.dbName}\``);
+        await rootKnex.raw(`DROP USER IF EXISTS '${tenant.dbUsername}'@'%'`);
+        this.logger.log(`Database deleted: ${tenant.dbName}`);
+      } finally {
+        await rootKnex.destroy();
+      }
+
+      // Delete tenant from central database
+      await centralPrisma.tenant.delete({
+        where: { id: tenantId },
+      });
+
+      // Remove from connection cache
+      this.tenantDbService.removeTenantConnection(tenantId);
+
+      this.logger.log(`Tenant deprovisioned: ${tenantId}`);
+    } catch (error) {
+      this.logger.error(`Failed to deprovision tenant: ${tenantId}`, error);
+      throw error;
+    }
+  }
+}

backend/src/tenant/tenant.controller.ts

@@ -0,0 +1,155 @@
+import {
+  Controller,
+  Get,
+  Put,
+  Body,
+  UseGuards,
+  Req,
+} from '@nestjs/common';
+import { JwtAuthGuard } from '../auth/jwt-auth.guard';
+import { TenantDatabaseService } from './tenant-database.service';
+import { getCentralPrisma } from '../prisma/central-prisma.service';
+import { TenantId } from './tenant.decorator';
+
+@Controller('tenant')
+@UseGuards(JwtAuthGuard)
+export class TenantController {
+  constructor(private readonly tenantDbService: TenantDatabaseService) {}
+
+  /**
+   * Get integrations configuration for the current tenant
+   */
+  @Get('integrations')
+  async getIntegrationsConfig(@TenantId() domain: string) {
+    const centralPrisma = getCentralPrisma();
+    
+    // Look up tenant by domain
+    const domainRecord = await centralPrisma.domain.findUnique({
+      where: { domain },
+      include: { tenant: { select: { id: true, integrationsConfig: true } } },
+    });
+
+    if (!domainRecord?.tenant || !domainRecord.tenant.integrationsConfig) {
+      return { data: null };
+    }
+
+    // Decrypt the config
+    const config = this.tenantDbService.decryptIntegrationsConfig(
+      domainRecord.tenant.integrationsConfig as any,
+    );
+
+    // Return config with sensitive fields masked
+    const maskedConfig = this.maskSensitiveFields(config);
+
+    return { data: maskedConfig };
+  }
+
+  /**
+   * Update integrations configuration for the current tenant
+   */
+  @Put('integrations')
+  async updateIntegrationsConfig(
+    @TenantId() domain: string,
+    @Body() body: { integrationsConfig: any },
+  ) {
+    const { integrationsConfig } = body;
+
+    if (!domain) {
+      throw new Error('Domain is missing from request');
+    }
+
+    // Look up tenant by domain
+    const centralPrisma = getCentralPrisma();
+    const domainRecord = await centralPrisma.domain.findUnique({
+      where: { domain },
+      include: { tenant: { select: { id: true, integrationsConfig: true } } },
+    });
+
+    if (!domainRecord?.tenant) {
+      throw new Error(`Tenant with domain ${domain} not found`);
+    }
+
+    // Merge with existing config to preserve masked values
+    let finalConfig = integrationsConfig;
+    if (domainRecord.tenant.integrationsConfig) {
+      const existingConfig = this.tenantDbService.decryptIntegrationsConfig(
+        domainRecord.tenant.integrationsConfig as any,
+      );
+
+      // Replace masked values with actual values from existing config
+      finalConfig = this.unmaskConfig(integrationsConfig, existingConfig);
+    }
+
+    // Encrypt the config
+    const encryptedConfig = this.tenantDbService.encryptIntegrationsConfig(
+      finalConfig,
+    );
+
+    // Update in database
+    await centralPrisma.tenant.update({
+      where: { id: domainRecord.tenant.id },
+      data: {
+        integrationsConfig: encryptedConfig as any,
+      },
+    });
+
+    return {
+      success: true,
+      message: 'Integrations configuration updated successfully',
+    };
+  }
+
+  /**
+   * Unmask config by replacing masked values with actual values from existing config
+   */
+  private unmaskConfig(newConfig: any, existingConfig: any): any {
+    const result = { ...newConfig };
+
+    // Unmask Twilio credentials
+    if (result.twilio && existingConfig.twilio) {
+      if (result.twilio.authToken === '••••••••' && existingConfig.twilio.authToken) {
+        result.twilio.authToken = existingConfig.twilio.authToken;
+      }
+      if (result.twilio.apiSecret === '••••••••' && existingConfig.twilio.apiSecret) {
+        result.twilio.apiSecret = existingConfig.twilio.apiSecret;
+      }
+    }
+
+    // Unmask OpenAI credentials
+    if (result.openai && existingConfig.openai) {
+      if (result.openai.apiKey === '••••••••' && existingConfig.openai.apiKey) {
+        result.openai.apiKey = existingConfig.openai.apiKey;
+      }
+    }
+
+    return result;
+  }
+
+  /**
+   * Mask sensitive fields for API responses
+   */
+  private maskSensitiveFields(config: any): any {
+    if (!config) return null;
+
+    const masked = { ...config };
+
+    // Mask Twilio credentials
+    if (masked.twilio) {
+      masked.twilio = {
+        ...masked.twilio,
+        authToken: masked.twilio.authToken ? '••••••••' : '',
+        apiSecret: masked.twilio.apiSecret ? '••••••••' : '',
+      };
+    }
+
+    // Mask OpenAI credentials
+    if (masked.openai) {
+      masked.openai = {
+        ...masked.openai,
+        apiKey: masked.openai.apiKey ? '••••••••' : '',
+      };
+    }
+
+    return masked;
+  }
+}

backend/src/tenant/tenant.middleware.ts

@@ -1,16 +1,134 @@
-import { Injectable, NestMiddleware } from '@nestjs/common';
+import { Injectable, NestMiddleware, Logger } from '@nestjs/common';
 import { FastifyRequest, FastifyReply } from 'fastify';
+import { TenantDatabaseService } from './tenant-database.service';
 
 @Injectable()
 export class TenantMiddleware implements NestMiddleware {
-  use(req: FastifyRequest['raw'], res: FastifyReply['raw'], next: () => void) {
-    const tenantId = req.headers['x-tenant-id'] as string;
-    
-    if (tenantId) {
-      // Attach tenantId to request object
-      (req as any).tenantId = tenantId;
+  private readonly logger = new Logger(TenantMiddleware.name);
+
+  constructor(private readonly tenantDbService: TenantDatabaseService) {}
+
+  async use(
+    req: FastifyRequest['raw'],
+    res: FastifyReply['raw'],
+    next: () => void,
+  ) {
+    try {
+      // Extract subdomain from hostname
+      const host = req.headers.host || '';
+      const hostname = host.split(':')[0]; // Remove port if present
+      
+      // Check Origin header to get frontend subdomain (for API calls)
+      const origin = req.headers.origin as string;
+      const referer = req.headers.referer as string;
+      
+      let parts = hostname.split('.');
+
+      this.logger.log(`Host header: ${host}, hostname: ${hostname}, origin: ${origin}, referer: ${referer}, parts: ${JSON.stringify(parts)}`);
+
+      // For local development, accept x-tenant-id header
+      let tenantId = req.headers['x-tenant-id'] as string;
+      let subdomain: string | null = null;
+
+      this.logger.log(`Host header: ${host}, hostname: ${hostname}, parts: ${JSON.stringify(parts)}, x-tenant-id: ${tenantId}`);
+
+      // Try to extract subdomain from Origin header first (for API calls from frontend)
+      if (origin) {
+        try {
+          const originUrl = new URL(origin);
+          const originHost = originUrl.hostname;
+          parts = originHost.split('.');
+          this.logger.log(`Using Origin header hostname: ${originHost}, parts: ${JSON.stringify(parts)}`);
+        } catch (error) {
+          this.logger.warn(`Failed to parse origin: ${origin}`);
+        }
+      } else if (referer && !tenantId) {
+        // Fallback to Referer if no Origin
+        try {
+          const refererUrl = new URL(referer);
+          const refererHost = refererUrl.hostname;
+          parts = refererHost.split('.');
+          this.logger.log(`Using Referer header hostname: ${refererHost}, parts: ${JSON.stringify(parts)}`);
+        } catch (error) {
+          this.logger.warn(`Failed to parse referer: ${referer}`);
+        }
+      }
+
+      // Extract subdomain (e.g., "tenant1" from "tenant1.routebox.co")
+      // For production domains with 3+ parts, extract first part as subdomain
+      if (parts.length >= 3) {
+        subdomain = parts[0];
+        // Ignore www subdomain
+        if (subdomain === 'www') {
+          subdomain = null;
+        }
+      }
+      // For development (e.g., tenant1.localhost), also check 2 parts
+      else if (parts.length === 2 && parts[1] === 'localhost') {
+        subdomain = parts[0];
+      }
+
+      this.logger.log(`Extracted subdomain: ${subdomain}`);
+
+      // Always attach subdomain to request if present
+      if (subdomain) {
+        (req as any).subdomain = subdomain;
+      }
+
+      // If x-tenant-id is explicitly provided, use it directly but still keep subdomain
+      if (tenantId) {
+        this.logger.log(`Using explicit x-tenant-id: ${tenantId}`);
+        (req as any).tenantId = tenantId;
+        next();
+        return;
+      }
+
+      // Always attach subdomain to request if present
+      if (subdomain) {
+        (req as any).subdomain = subdomain;
+      }
+
+      // Check if this is a central subdomain
+      const centralSubdomains = (process.env.CENTRAL_SUBDOMAINS || 'central,admin').split(',');
+      const isCentral = subdomain && centralSubdomains.includes(subdomain);
+
+      // If it's a central subdomain, skip tenant resolution
+      if (isCentral) {
+        this.logger.log(`Central subdomain detected: ${subdomain}, skipping tenant resolution`);
+        (req as any).subdomain = subdomain;
+        next();
+        return;
+      }
+
+      // Get tenant by subdomain if available
+      if (subdomain) {
+        try {
+          const tenant = await this.tenantDbService.getTenantByDomain(subdomain);
+          if (tenant) {
+            tenantId = tenant.id;
+            this.logger.log(
+              `Tenant identified: ${tenant.name} (${tenant.id}) from subdomain: ${subdomain}`,
+            );
+          }
+        } catch (error) {
+          this.logger.warn(`No tenant found for subdomain: ${subdomain}`, error.message);
+          // Fall back to using subdomain as tenantId directly if domain lookup fails
+          tenantId = subdomain;
+          this.logger.log(`Using subdomain as tenantId fallback: ${tenantId}`);
+        }
+      }
+
+      if (tenantId) {
+        // Attach tenant info to request object
+        (req as any).tenantId = tenantId;
+      } else {
+        this.logger.warn(`No tenant identified from host: ${hostname}`);
+      }
+
+      next();
+    } catch (error) {
+      this.logger.error('Error in tenant middleware', error);
+      next();
     }
-    
-    next();
   }
 }

backend/src/tenant/tenant.module.ts

@@ -1,7 +1,22 @@
 import { Module, NestModule, MiddlewareConsumer } from '@nestjs/common';
 import { TenantMiddleware } from './tenant.middleware';
+import { TenantDatabaseService } from './tenant-database.service';
+import { TenantProvisioningService } from './tenant-provisioning.service';
+import { TenantProvisioningController } from './tenant-provisioning.controller';
+import { CentralAdminController } from './central-admin.controller';
+import { TenantController } from './tenant.controller';
+import { PrismaModule } from '../prisma/prisma.module';
 
-@Module({})
+@Module({
+  imports: [PrismaModule],
+  controllers: [TenantProvisioningController, CentralAdminController, TenantController],
+  providers: [
+    TenantDatabaseService,
+    TenantProvisioningService,
+    TenantMiddleware,
+  ],
+  exports: [TenantDatabaseService, TenantProvisioningService],
+})
 export class TenantModule implements NestModule {
   configure(consumer: MiddlewareConsumer) {
     consumer.apply(TenantMiddleware).forRoutes('*');

backend/src/voice/audio-converter.service.ts

@@ -0,0 +1,214 @@
+import { Injectable, Logger } from '@nestjs/common';
+
+/**
+ * Audio format converter for Twilio <-> OpenAI audio streaming
+ * 
+ * Twilio Media Streams format:
+ * - Codec: μ-law (G.711)
+ * - Sample rate: 8kHz
+ * - Encoding: base64
+ * - Chunk size: 20ms (160 bytes)
+ * 
+ * OpenAI Realtime API format:
+ * - Codec: PCM16
+ * - Sample rate: 24kHz
+ * - Encoding: base64
+ * - Mono channel
+ */
+@Injectable()
+export class AudioConverterService {
+  private readonly logger = new Logger(AudioConverterService.name);
+
+  // μ-law decode lookup table
+  private readonly MULAW_DECODE_TABLE = this.buildMuLawDecodeTable();
+
+  // μ-law encode lookup table
+  private readonly MULAW_ENCODE_TABLE = this.buildMuLawEncodeTable();
+
+  /**
+   * Build μ-law to linear PCM16 decode table
+   */
+  private buildMuLawDecodeTable(): Int16Array {
+    const table = new Int16Array(256);
+    for (let i = 0; i < 256; i++) {
+      const mulaw = ~i;
+      const exponent = (mulaw >> 4) & 0x07;
+      const mantissa = mulaw & 0x0f;
+      let sample = (mantissa << 3) + 0x84;
+      sample <<= exponent;
+      sample -= 0x84;
+      if ((mulaw & 0x80) === 0) {
+        sample = -sample;
+      }
+      table[i] = sample;
+    }
+    return table;
+  }
+
+  /**
+   * Build linear PCM16 to μ-law encode table
+   */
+  private buildMuLawEncodeTable(): Uint8Array {
+    const table = new Uint8Array(65536);
+    for (let i = 0; i < 65536; i++) {
+      const sample = (i - 32768);
+      const sign = sample < 0 ? 0x80 : 0x00;
+      const magnitude = Math.abs(sample);
+      
+      // Add bias
+      let biased = magnitude + 0x84;
+      
+      // Find exponent
+      let exponent = 7;
+      for (let exp = 0; exp < 8; exp++) {
+        if (biased <= (0xff << exp)) {
+          exponent = exp;
+          break;
+        }
+      }
+      
+      // Extract mantissa
+      const mantissa = (biased >> (exponent + 3)) & 0x0f;
+      
+      // Combine sign, exponent, mantissa
+      const mulaw = ~(sign | (exponent << 4) | mantissa);
+      table[i] = mulaw & 0xff;
+    }
+    return table;
+  }
+
+  /**
+   * Decode μ-law audio to linear PCM16
+   * @param mulawData - Buffer containing μ-law encoded audio
+   * @returns Buffer containing PCM16 audio (16-bit little-endian)
+   */
+  decodeMuLaw(mulawData: Buffer): Buffer {
+    const pcm16 = Buffer.allocUnsafe(mulawData.length * 2);
+    
+    for (let i = 0; i < mulawData.length; i++) {
+      const sample = this.MULAW_DECODE_TABLE[mulawData[i]];
+      pcm16.writeInt16LE(sample, i * 2);
+    }
+    
+    return pcm16;
+  }
+
+  /**
+   * Encode linear PCM16 to μ-law
+   * @param pcm16Data - Buffer containing PCM16 audio (16-bit little-endian)
+   * @returns Buffer containing μ-law encoded audio
+   */
+  encodeMuLaw(pcm16Data: Buffer): Buffer {
+    const mulaw = Buffer.allocUnsafe(pcm16Data.length / 2);
+    
+    for (let i = 0; i < pcm16Data.length; i += 2) {
+      const sample = pcm16Data.readInt16LE(i);
+      const index = (sample + 32768) & 0xffff;
+      mulaw[i / 2] = this.MULAW_ENCODE_TABLE[index];
+    }
+    
+    return mulaw;
+  }
+
+  /**
+   * Resample audio from 8kHz to 24kHz (linear interpolation)
+   * @param pcm16Data - Buffer containing 8kHz PCM16 audio
+   * @returns Buffer containing 24kHz PCM16 audio
+   */
+  resample8kTo24k(pcm16Data: Buffer): Buffer {
+    const inputSamples = pcm16Data.length / 2;
+    const outputSamples = Math.floor(inputSamples * 3); // 8k * 3 = 24k
+    const output = Buffer.allocUnsafe(outputSamples * 2);
+    
+    for (let i = 0; i < outputSamples; i++) {
+      const srcIndex = i / 3;
+      const srcIndexFloor = Math.floor(srcIndex);
+      const srcIndexCeil = Math.min(srcIndexFloor + 1, inputSamples - 1);
+      const fraction = srcIndex - srcIndexFloor;
+      
+      const sample1 = pcm16Data.readInt16LE(srcIndexFloor * 2);
+      const sample2 = pcm16Data.readInt16LE(srcIndexCeil * 2);
+      
+      // Linear interpolation
+      const interpolated = Math.round(sample1 + (sample2 - sample1) * fraction);
+      output.writeInt16LE(interpolated, i * 2);
+    }
+    
+    return output;
+  }
+
+  /**
+   * Resample audio from 24kHz to 8kHz (decimation with averaging)
+   * @param pcm16Data - Buffer containing 24kHz PCM16 audio
+   * @returns Buffer containing 8kHz PCM16 audio
+   */
+  resample24kTo8k(pcm16Data: Buffer): Buffer {
+    const inputSamples = pcm16Data.length / 2;
+    const outputSamples = Math.floor(inputSamples / 3); // 24k / 3 = 8k
+    const output = Buffer.allocUnsafe(outputSamples * 2);
+    
+    for (let i = 0; i < outputSamples; i++) {
+      // Average 3 samples for anti-aliasing
+      const idx1 = Math.min(i * 3, inputSamples - 1);
+      const idx2 = Math.min(i * 3 + 1, inputSamples - 1);
+      const idx3 = Math.min(i * 3 + 2, inputSamples - 1);
+      
+      const sample1 = pcm16Data.readInt16LE(idx1 * 2);
+      const sample2 = pcm16Data.readInt16LE(idx2 * 2);
+      const sample3 = pcm16Data.readInt16LE(idx3 * 2);
+      
+      const averaged = Math.round((sample1 + sample2 + sample3) / 3);
+      output.writeInt16LE(averaged, i * 2);
+    }
+    
+    return output;
+  }
+
+  /**
+   * Convert Twilio μ-law 8kHz to OpenAI PCM16 24kHz
+   * @param twilioBase64 - Base64-encoded μ-law audio from Twilio
+   * @returns Base64-encoded PCM16 24kHz audio for OpenAI
+   */
+  twilioToOpenAI(twilioBase64: string): string {
+    try {
+      // Decode base64
+      const mulawBuffer = Buffer.from(twilioBase64, 'base64');
+      
+      // μ-law -> PCM16
+      const pcm16_8k = this.decodeMuLaw(mulawBuffer);
+      
+      // 8kHz -> 24kHz
+      const pcm16_24k = this.resample8kTo24k(pcm16_8k);
+      
+      // Encode to base64
+      return pcm16_24k.toString('base64');
+    } catch (error) {
+      this.logger.error('Error converting Twilio to OpenAI audio', error);
+      throw error;
+    }
+  }
+
+  /**
+   * Convert OpenAI PCM16 24kHz to Twilio μ-law 8kHz
+   * @param openaiBase64 - Base64-encoded PCM16 24kHz audio from OpenAI
+   * @returns Base64-encoded μ-law 8kHz audio for Twilio
+   */
+  openAIToTwilio(openaiBase64: string): string {
+    try {
+      // Decode base64
+      const pcm16_24k = Buffer.from(openaiBase64, 'base64');
+      
+      // 24kHz -> 8kHz
+      const pcm16_8k = this.resample24kTo8k(pcm16_24k);
+      
+      // PCM16 -> μ-law
+      const mulawBuffer = this.encodeMuLaw(pcm16_8k);
+      
+      // Encode to base64
+      return mulawBuffer.toString('base64');
+    } catch (error) {
+      this.logger.error('Error converting OpenAI to Twilio audio', error);
+      throw error;
+    }
+  }
+}

backend/src/voice/dto/call-event.dto.ts

@@ -0,0 +1,25 @@
+export interface CallEventDto {
+  callSid: string;
+  direction: 'inbound' | 'outbound';
+  fromNumber: string;
+  toNumber: string;
+  status: string;
+}
+
+export interface DtmfEventDto {
+  callSid: string;
+  digit: string;
+}
+
+export interface TranscriptEventDto {
+  callSid: string;
+  transcript: string;
+  isFinal: boolean;
+}
+
+export interface AiSuggestionDto {
+  callSid: string;
+  suggestion: string;
+  type: 'response' | 'action' | 'insight';
+  data?: any;
+}

backend/src/voice/dto/initiate-call.dto.ts

@@ -0,0 +1,10 @@
+import { IsString, IsNotEmpty, Matches } from 'class-validator';
+
+export class InitiateCallDto {
+  @IsString()
+  @IsNotEmpty()
+  @Matches(/^\+?[1-9]\d{1,14}$/, {
+    message: 'Invalid phone number format (use E.164 format)',
+  })
+  toNumber: string;
+}

backend/src/voice/interfaces/integration-config.interface.ts

@@ -0,0 +1,20 @@
+export interface TwilioConfig {
+  accountSid: string;
+  authToken: string;
+  phoneNumber: string;
+  apiKey?: string;  // API Key SID for generating access tokens
+  apiSecret?: string;  // API Key Secret
+  twimlAppSid?: string;  // TwiML App SID for Voice SDK
+}
+
+export interface OpenAIConfig {
+  apiKey: string;
+  assistantId?: string;
+  model?: string;
+  voice?: string;
+}
+
+export interface IntegrationsConfig {
+  twilio?: TwilioConfig;
+  openai?: OpenAIConfig;
+}

backend/src/voice/voice.controller.ts

@@ -0,0 +1,495 @@
+import {
+  Controller,
+  Post,
+  Get,
+  Body,
+  Req,
+  Res,
+  UseGuards,
+  Logger,
+  Query,
+} from '@nestjs/common';
+import { FastifyRequest, FastifyReply } from 'fastify';
+import { JwtAuthGuard } from '../auth/jwt-auth.guard';
+import { VoiceService } from './voice.service';
+import { VoiceGateway } from './voice.gateway';
+import { AudioConverterService } from './audio-converter.service';
+import { InitiateCallDto } from './dto/initiate-call.dto';
+import { TenantId } from '../tenant/tenant.decorator';
+
+@Controller('voice')
+export class VoiceController {
+  private readonly logger = new Logger(VoiceController.name);
+
+  // Track active Media Streams connections: streamSid -> WebSocket
+  private mediaStreams: Map<string, any> = new Map();
+
+  constructor(
+    private readonly voiceService: VoiceService,
+    private readonly voiceGateway: VoiceGateway,
+    private readonly audioConverter: AudioConverterService,
+  ) {}
+
+  /**
+   * Initiate outbound call via REST
+   */
+  @Post('call')
+  @UseGuards(JwtAuthGuard)
+  async initiateCall(
+    @Body() body: InitiateCallDto,
+    @Req() req: any,
+    @TenantId() tenantId: string,
+  ) {
+    const userId = req.user?.userId || req.user?.sub;
+
+    const result = await this.voiceService.initiateCall({
+      tenantId,
+      userId,
+      toNumber: body.toNumber,
+    });
+
+    return {
+      success: true,
+      data: result,
+    };
+  }
+
+  /**
+   * Generate Twilio access token for browser client
+   */
+  @Get('token')
+  @UseGuards(JwtAuthGuard)
+  async getAccessToken(
+    @Req() req: any,
+    @TenantId() tenantId: string,
+  ) {
+    const userId = req.user?.userId || req.user?.sub;
+    
+    const token = await this.voiceService.generateAccessToken(tenantId, userId);
+
+    return {
+      success: true,
+      data: { token },
+    };
+  }
+
+  /**
+   * Get call history
+   */
+  @Get('calls')
+  @UseGuards(JwtAuthGuard)
+  async getCallHistory(
+    @Req() req: any,
+    @TenantId() tenantId: string,
+    @Query('limit') limit?: string,
+  ) {
+    const userId = req.user?.userId || req.user?.sub;
+    const calls = await this.voiceService.getCallHistory(
+      tenantId,
+      userId,
+      limit ? parseInt(limit) : 50,
+    );
+
+    return {
+      success: true,
+      data: calls,
+    };
+  }
+
+  /**
+   * TwiML for outbound calls from browser (Twilio Device)
+   */
+  @Post('twiml/outbound')
+  async outboundTwiml(@Req() req: FastifyRequest, @Res() res: FastifyReply) {
+    const body = req.body as any;
+    const to = body.To;
+    const from = body.From;
+    const callSid = body.CallSid;
+
+    this.logger.log(`=== TwiML OUTBOUND REQUEST RECEIVED ===`);
+    this.logger.log(`CallSid: ${callSid}, Body From: ${from}, Body To: ${to}`);
+    this.logger.log(`Full body: ${JSON.stringify(body)}`);
+
+    try {
+      // Extract tenant domain from Host header
+      const host = req.headers.host || '';
+      const tenantDomain = host.split('.')[0]; // e.g., "tenant1" from "tenant1.routebox.co"
+      
+      this.logger.log(`Extracted tenant domain: ${tenantDomain}`);
+
+      // Look up tenant's Twilio phone number from config
+      let callerId = to; // Fallback (will cause error if not found)
+      try {
+        // Get Twilio config to find the phone number
+        const { config } = await this.voiceService['getTwilioClient'](tenantDomain);
+        callerId = config.phoneNumber;
+        this.logger.log(`Retrieved Twilio phone number for tenant: ${callerId}`);
+      } catch (error: any) {
+        this.logger.error(`Failed to get Twilio config: ${error.message}`);
+      }
+
+      const dialNumber = to;
+
+      this.logger.log(`Using callerId: ${callerId}, dialNumber: ${dialNumber}`);
+
+      // Return TwiML to DIAL the phone number with proper callerId
+      const twiml = `<?xml version="1.0" encoding="UTF-8"?>
+<Response>
+  <Dial callerId="${callerId}">
+    <Number>${dialNumber}</Number>
+  </Dial>
+</Response>`;
+
+      this.logger.log(`Returning TwiML with Dial verb - callerId: ${callerId}, to: ${dialNumber}`);
+      res.type('text/xml').send(twiml);
+    } catch (error: any) {
+      this.logger.error(`=== ERROR GENERATING TWIML ===`);
+      this.logger.error(`Error: ${error.message}`);
+      this.logger.error(`Stack: ${error.stack}`);
+      const errorTwiml = `<?xml version="1.0" encoding="UTF-8"?>
+<Response>
+  <Say>An error occurred while processing your call.</Say>
+</Response>`;
+      res.type('text/xml').send(errorTwiml);
+    }
+  }
+
+  /**
+   * TwiML for inbound calls
+   */
+  @Post('twiml/inbound')
+  async inboundTwiml(@Req() req: FastifyRequest, @Res() res: FastifyReply) {
+    const body = req.body as any;
+    const callSid = body.CallSid;
+    const fromNumber = body.From;
+    const toNumber = body.To;
+
+    this.logger.log(`\n\n╔════════════════════════════════════════╗`);
+    this.logger.log(`║ === INBOUND CALL RECEIVED ===`);
+    this.logger.log(`╚════════════════════════════════════════╝`);
+    this.logger.log(`CallSid: ${callSid}`);
+    this.logger.log(`From: ${fromNumber}`);
+    this.logger.log(`To: ${toNumber}`);
+    this.logger.log(`Full body: ${JSON.stringify(body)}`);
+
+    try {
+      // Extract tenant domain from Host header
+      const host = req.headers.host || '';
+      const tenantDomain = host.split('.')[0]; // e.g., "tenant1" from "tenant1.routebox.co"
+      
+      this.logger.log(`Extracted tenant domain: ${tenantDomain}`);
+
+      // Get all connected users for this tenant
+      const connectedUsers = this.voiceGateway.getConnectedUsers(tenantDomain);
+      
+      this.logger.log(`Connected users for tenant ${tenantDomain}: ${connectedUsers.length}`);
+      if (connectedUsers.length > 0) {
+        this.logger.log(`Connected user IDs: ${connectedUsers.join(', ')}`);
+      }
+      
+      if (connectedUsers.length === 0) {
+        // No users online - send to voicemail or play message
+        const twiml = `<?xml version="1.0" encoding="UTF-8"?>
+<Response>
+  <Say>Sorry, no agents are currently available. Please try again later.</Say>
+  <Hangup/>
+</Response>`;
+        this.logger.log(`❌ No users online - returning unavailable message`);
+        return res.type('text/xml').send(twiml);
+      }
+
+      // Build TwiML to dial all connected clients with Media Streams for AI
+      const clientElements = connectedUsers.map(userId => `    <Client>${userId}</Client>`).join('\n');
+      
+      // Use wss:// for secure WebSocket (Traefik handles HTTPS)
+      const streamUrl = `wss://${host}/api/voice/media-stream`;
+      
+      this.logger.log(`Stream URL: ${streamUrl}`);
+      this.logger.log(`Dialing ${connectedUsers.length} client(s)...`);
+      this.logger.log(`Client IDs to dial: ${connectedUsers.join(', ')}`);
+      
+      // Verify we have client IDs in proper format
+      if (connectedUsers.length > 0) {
+        this.logger.log(`First Client ID format check: "${connectedUsers[0]}" (length: ${connectedUsers[0].length})`);
+      }
+
+      // Notify connected users about incoming call via Socket.IO
+      connectedUsers.forEach(userId => {
+        this.voiceGateway.notifyIncomingCall(userId, {
+          callSid,
+          fromNumber,
+          toNumber,
+          tenantDomain,
+        });
+      });
+
+      const twiml = `<?xml version="1.0" encoding="UTF-8"?>
+<Response>
+  <Start>
+    <Stream url="${streamUrl}">
+      <Parameter name="tenantId" value="${tenantDomain}"/>
+      <Parameter name="userId" value="${connectedUsers[0]}"/>
+    </Stream>
+  </Start>
+  <Dial timeout="30">
+${clientElements}
+  </Dial>
+</Response>`;
+
+      this.logger.log(`✓ Returning inbound TwiML with Media Streams - dialing ${connectedUsers.length} client(s)`);
+      this.logger.log(`Generated TwiML:\n${twiml}\n`);
+      res.type('text/xml').send(twiml);
+    } catch (error: any) {
+      this.logger.error(`Error generating inbound TwiML: ${error.message}`);
+      const errorTwiml = `<?xml version="1.0" encoding="UTF-8"?>
+<Response>
+  <Say>Sorry, we are unable to connect your call at this time.</Say>
+  <Hangup/>
+</Response>`;
+      res.type('text/xml').send(errorTwiml);
+    }
+  }
+
+  /**
+   * Twilio status webhook
+   */
+  @Post('webhook/status')
+  async statusWebhook(@Req() req: FastifyRequest) {
+    const body = req.body as any;
+    const callSid = body.CallSid;
+    const status = body.CallStatus;
+    const duration = body.CallDuration ? parseInt(body.CallDuration) : undefined;
+
+    this.logger.log(`Call status webhook - CallSid: ${callSid}, Status: ${status}, Duration: ${duration}`);
+    this.logger.log(`Full status webhook body:`, JSON.stringify(body));
+
+    return { success: true };
+  }
+
+  /**
+   * Twilio recording webhook
+   */
+  @Post('webhook/recording')
+  async recordingWebhook(@Req() req: FastifyRequest) {
+    const body = req.body as any;
+    const callSid = body.CallSid;
+    const recordingSid = body.RecordingSid;
+    const recordingStatus = body.RecordingStatus;
+
+    this.logger.log(`Recording webhook - CallSid: ${callSid}, RecordingSid: ${recordingSid}, Status: ${recordingStatus}`);
+
+    return { success: true };
+  }
+
+  /**
+   * Twilio Media Streams WebSocket endpoint
+   * Receives real-time audio from Twilio and forwards to OpenAI Realtime API
+   * 
+   * This handles the HTTP GET request and upgrades it to WebSocket manually.
+   */
+  @Get('media-stream')
+  mediaStream(@Req() req: FastifyRequest) {
+    // For WebSocket upgrade, we need to access the raw socket
+    let socket: any;
+    
+    try {
+      this.logger.log(`=== MEDIA STREAM REQUEST ===`);
+      this.logger.log(`URL: ${req.url}`);
+      this.logger.log(`Headers keys: ${Object.keys(req.headers).join(', ')}`);
+      this.logger.log(`Headers: ${JSON.stringify(req.headers)}`);
+      
+      // Check if this is a WebSocket upgrade request
+      const hasWebSocketKey = 'sec-websocket-key' in req.headers;
+      const hasWebSocketVersion = 'sec-websocket-version' in req.headers;
+      
+      this.logger.log(`hasWebSocketKey: ${hasWebSocketKey}`);
+      this.logger.log(`hasWebSocketVersion: ${hasWebSocketVersion}`);
+      
+      if (!hasWebSocketKey || !hasWebSocketVersion) {
+        this.logger.log('Not a WebSocket upgrade request - returning');
+        return;
+      }
+
+      this.logger.log('✓ WebSocket upgrade detected');
+      
+      // Get the socket - try different ways
+      socket = (req.raw as any).socket;
+      this.logger.log(`Socket obtained: ${!!socket}`);
+      
+      if (!socket) {
+        this.logger.error('Failed to get socket from req.raw');
+        return;
+      }
+      
+      const rawRequest = req.raw;
+      const head = Buffer.alloc(0);
+      
+      this.logger.log('Creating WebSocketServer...');
+      const WebSocketServer = require('ws').Server;
+      const wss = new WebSocketServer({ noServer: true });
+      
+      this.logger.log('Calling handleUpgrade...');
+      
+      // handleUpgrade will send the 101 response and take over the socket
+      wss.handleUpgrade(rawRequest, socket, head, (ws: any) => {
+        this.logger.log('=== TWILIO MEDIA STREAM WEBSOCKET UPGRADED SUCCESSFULLY ===');
+        this.handleMediaStreamSocket(ws);
+      });
+      
+      this.logger.log('handleUpgrade completed');
+    } catch (error: any) {
+      this.logger.error(`=== FAILED TO UPGRADE TO WEBSOCKET ===`);
+      this.logger.error(`Error message: ${error.message}`);
+      this.logger.error(`Error stack: ${error.stack}`);
+    }
+  }
+
+  /**
+   * Handle incoming Media Stream WebSocket messages
+   */
+  private handleMediaStreamSocket(ws: any) {
+    let streamSid: string | null = null;
+    let callSid: string | null = null;
+    let tenantDomain: string | null = null;
+    let mediaPacketCount = 0;
+
+    // WebSocket message handler
+    ws.on('message', async (message: Buffer) => {
+      try {
+        const msg = JSON.parse(message.toString());
+
+        switch (msg.event) {
+          case 'connected':
+            this.logger.log('=== MEDIA STREAM EVENT: CONNECTED ===');
+            this.logger.log(`Protocol: ${msg.protocol}`);
+            this.logger.log(`Version: ${msg.version}`);
+            break;
+
+          case 'start':
+            streamSid = msg.streamSid;
+            callSid = msg.start.callSid;
+
+            // Extract tenant from customParameters if available
+            tenantDomain = msg.start.customParameters?.tenantId || 'tenant1';
+
+            this.logger.log(`=== MEDIA STREAM EVENT: START ===`);
+            this.logger.log(`StreamSid: ${streamSid}`);
+            this.logger.log(`CallSid: ${callSid}`);
+            this.logger.log(`Tenant: ${tenantDomain}`);
+            this.logger.log(`AccountSid: ${msg.start.accountSid}`);
+            this.logger.log(`MediaFormat: ${JSON.stringify(msg.start.mediaFormat)}`);
+            this.logger.log(`Custom Parameters: ${JSON.stringify(msg.start.customParameters)}`);
+
+            // Store WebSocket connection
+            this.mediaStreams.set(streamSid, ws);
+            this.logger.log(`Stored WebSocket for streamSid: ${streamSid}. Total active streams: ${this.mediaStreams.size}`);
+
+            // Initialize OpenAI Realtime connection for this call
+            this.logger.log(`Initializing OpenAI Realtime for call ${callSid}...`);
+            await this.voiceService.initializeOpenAIRealtime({
+              callSid,
+              tenantId: tenantDomain,
+              userId: msg.start.customParameters?.userId || 'system',
+            });
+
+            this.logger.log(`✓ OpenAI Realtime initialized for call ${callSid}`);
+            break;
+
+          case 'media':
+            mediaPacketCount++;
+            if (mediaPacketCount % 50 === 0) {
+              // Log every 50th packet to avoid spam
+              this.logger.log(`Received media packet #${mediaPacketCount} for StreamSid: ${streamSid}, CallSid: ${callSid}, PayloadSize: ${msg.media.payload?.length || 0} bytes`);
+            }
+
+            if (!callSid || !tenantDomain) {
+              this.logger.warn('Received media before start event');
+              break;
+            }
+
+            // msg.media.payload is base64-encoded μ-law audio from Twilio
+            const twilioAudio = msg.media.payload;
+
+            // Convert Twilio audio (μ-law 8kHz) to OpenAI format (PCM16 24kHz)
+            const openaiAudio = this.audioConverter.twilioToOpenAI(twilioAudio);
+
+            // Send audio to OpenAI Realtime API
+            await this.voiceService.sendAudioToOpenAI(callSid, openaiAudio);
+            break;
+
+          case 'stop':
+            this.logger.log(`=== MEDIA STREAM EVENT: STOP ===`);
+            this.logger.log(`StreamSid: ${streamSid}`);
+            this.logger.log(`Total media packets received: ${mediaPacketCount}`);
+
+            if (streamSid) {
+              this.mediaStreams.delete(streamSid);
+              this.logger.log(`Removed WebSocket for streamSid: ${streamSid}. Remaining active streams: ${this.mediaStreams.size}`);
+            }
+
+            // Clean up OpenAI connection
+            if (callSid) {
+              this.logger.log(`Cleaning up OpenAI connection for call ${callSid}...`);
+              await this.voiceService.cleanupOpenAIConnection(callSid);
+              this.logger.log(`✓ OpenAI connection cleaned up for call ${callSid}`);
+            }
+            break;
+
+          default:
+            this.logger.debug(`Unknown media stream event: ${msg.event}`);
+        }
+      } catch (error: any) {
+        this.logger.error(`Error processing media stream message: ${error.message}`);
+        this.logger.error(`Stack: ${error.stack}`);
+      }
+    });
+
+    ws.on('close', () => {
+      this.logger.log(`=== MEDIA STREAM WEBSOCKET CLOSED ===`);
+      this.logger.log(`StreamSid: ${streamSid}`);
+      this.logger.log(`Total media packets in this stream: ${mediaPacketCount}`);
+      if (streamSid) {
+        this.mediaStreams.delete(streamSid);
+        this.logger.log(`Cleaned up streamSid on close. Remaining active streams: ${this.mediaStreams.size}`);
+      }
+    });
+
+    ws.on('error', (error: Error) => {
+      this.logger.error(`=== MEDIA STREAM WEBSOCKET ERROR ===`);
+      this.logger.error(`StreamSid: ${streamSid}`);
+      this.logger.error(`Error message: ${error.message}`);
+      this.logger.error(`Error stack: ${error.stack}`);
+    });
+  }
+
+  /**
+   * Send audio from OpenAI back to Twilio Media Stream
+   */
+  async sendAudioToTwilio(streamSid: string, openaiAudioBase64: string) {
+    const ws = this.mediaStreams.get(streamSid);
+    
+    if (!ws) {
+      this.logger.warn(`No Media Stream found for streamSid: ${streamSid}`);
+      return;
+    }
+
+    try {
+      // Convert OpenAI audio (PCM16 24kHz) to Twilio format (μ-law 8kHz)
+      const twilioAudio = this.audioConverter.openAIToTwilio(openaiAudioBase64);
+      
+      // Send to Twilio Media Stream
+      const message = {
+        event: 'media',
+        streamSid,
+        media: {
+          payload: twilioAudio,
+        },
+      };
+      
+      ws.send(JSON.stringify(message));
+    } catch (error: any) {
+      this.logger.error(`Error sending audio to Twilio: ${error.message}`);
+    }
+  }
+}
+

backend/src/voice/voice.gateway.ts

@@ -0,0 +1,319 @@
+import {
+  WebSocketGateway,
+  WebSocketServer,
+  SubscribeMessage,
+  OnGatewayConnection,
+  OnGatewayDisconnect,
+  ConnectedSocket,
+  MessageBody,
+} from '@nestjs/websockets';
+import { Server, Socket } from 'socket.io';
+import { Logger, UseGuards } from '@nestjs/common';
+import { JwtService } from '@nestjs/jwt';
+import { VoiceService } from './voice.service';
+import { TenantDatabaseService } from '../tenant/tenant-database.service';
+
+interface AuthenticatedSocket extends Socket {
+  tenantId?: string;
+  userId?: string;
+  tenantSlug?: string;
+}
+
+@WebSocketGateway({
+  namespace: 'voice',
+  cors: {
+    origin: true,
+    credentials: true,
+  },
+})
+export class VoiceGateway
+  implements OnGatewayConnection, OnGatewayDisconnect
+{
+  @WebSocketServer()
+  server: Server;
+
+  private readonly logger = new Logger(VoiceGateway.name);
+  private connectedUsers: Map<string, AuthenticatedSocket> = new Map();
+  private activeCallsByUser: Map<string, string> = new Map(); // userId -> callSid
+
+  constructor(
+    private readonly jwtService: JwtService,
+    private readonly voiceService: VoiceService,
+    private readonly tenantDbService: TenantDatabaseService,
+  ) {
+    // Set gateway reference in service to avoid circular dependency
+    this.voiceService.setGateway(this);
+  }
+
+  async handleConnection(client: AuthenticatedSocket) {
+    try {
+      // Extract token from handshake auth
+      const token =
+        client.handshake.auth.token || client.handshake.headers.authorization?.split(' ')[1];
+
+      if (!token) {
+        this.logger.warn('❌ Client connection rejected: No token provided');
+        client.disconnect();
+        return;
+      }
+
+      // Verify JWT token
+      const payload = await this.jwtService.verifyAsync(token);
+      
+      // Extract domain from origin header (e.g., http://tenant1.routebox.co:3001)
+      // The domains table stores just the subdomain part (e.g., "tenant1")
+      const origin = client.handshake.headers.origin || client.handshake.headers.referer;
+      let domain = 'localhost';
+      
+      if (origin) {
+        try {
+          const url = new URL(origin);
+          const hostname = url.hostname; // e.g., tenant1.routebox.co or localhost
+          
+          // Extract first part of subdomain as domain
+          // tenant1.routebox.co -> tenant1
+          // localhost -> localhost
+          domain = hostname.split('.')[0];
+        } catch (error) {
+          this.logger.warn(`Failed to parse origin: ${origin}`);
+        }
+      }
+      
+      client.tenantId = domain; // Store the subdomain as tenantId
+      client.userId = payload.sub;
+      client.tenantSlug = domain; // Same as subdomain
+
+      this.connectedUsers.set(client.userId, client);
+      this.logger.log(
+        `✓ Client connected: ${client.id} (User: ${client.userId}, Domain: ${domain})`,
+      );
+      this.logger.log(`Total connected users in ${domain}: ${this.getConnectedUsers(domain).length}`);
+
+      // Send current call state if any active call
+      const activeCallSid = this.activeCallsByUser.get(client.userId);
+      if (activeCallSid) {
+        const callState = await this.voiceService.getCallState(
+          activeCallSid,
+          client.tenantId,
+        );
+        client.emit('call:state', callState);
+      }
+    } catch (error) {
+      this.logger.error('❌ Authentication failed', error);
+      client.disconnect();
+    }
+  }
+
+  handleDisconnect(client: AuthenticatedSocket) {
+    if (client.userId) {
+      this.connectedUsers.delete(client.userId);
+      this.logger.log(`✓ Client disconnected: ${client.id} (User: ${client.userId})`);
+      this.logger.log(`Remaining connected users: ${this.connectedUsers.size}`);
+    }
+  }
+
+  /**
+   * Initiate outbound call
+   */
+  @SubscribeMessage('call:initiate')
+  async handleInitiateCall(
+    @ConnectedSocket() client: AuthenticatedSocket,
+    @MessageBody() data: { toNumber: string },
+  ) {
+    try {
+      this.logger.log(`Initiating call from user ${client.userId} to ${data.toNumber}`);
+
+      const result = await this.voiceService.initiateCall({
+        tenantId: client.tenantId,
+        userId: client.userId,
+        toNumber: data.toNumber,
+      });
+
+      this.activeCallsByUser.set(client.userId, result.callSid);
+
+      client.emit('call:initiated', {
+        callSid: result.callSid,
+        toNumber: data.toNumber,
+        status: 'queued',
+      });
+
+      return { success: true, callSid: result.callSid };
+    } catch (error) {
+      this.logger.error('Failed to initiate call', error);
+      client.emit('call:error', {
+        message: error.message || 'Failed to initiate call',
+      });
+      return { success: false, error: error.message };
+    }
+  }
+
+  /**
+   * Accept incoming call
+   */
+  @SubscribeMessage('call:accept')
+  async handleAcceptCall(
+    @ConnectedSocket() client: AuthenticatedSocket,
+    @MessageBody() data: { callSid: string },
+  ) {
+    try {
+      this.logger.log(`User ${client.userId} accepting call ${data.callSid}`);
+
+      await this.voiceService.acceptCall({
+        callSid: data.callSid,
+        tenantId: client.tenantId,
+        userId: client.userId,
+      });
+
+      this.activeCallsByUser.set(client.userId, data.callSid);
+
+      client.emit('call:accepted', { callSid: data.callSid });
+
+      return { success: true };
+    } catch (error) {
+      this.logger.error('Failed to accept call', error);
+      return { success: false, error: error.message };
+    }
+  }
+
+  /**
+   * Reject incoming call
+   */
+  @SubscribeMessage('call:reject')
+  async handleRejectCall(
+    @ConnectedSocket() client: AuthenticatedSocket,
+    @MessageBody() data: { callSid: string },
+  ) {
+    try {
+      this.logger.log(`User ${client.userId} rejecting call ${data.callSid}`);
+
+      await this.voiceService.rejectCall(data.callSid, client.tenantId);
+
+      client.emit('call:rejected', { callSid: data.callSid });
+
+      return { success: true };
+    } catch (error) {
+      this.logger.error('Failed to reject call', error);
+      return { success: false, error: error.message };
+    }
+  }
+
+  /**
+   * End active call
+   */
+  @SubscribeMessage('call:end')
+  async handleEndCall(
+    @ConnectedSocket() client: AuthenticatedSocket,
+    @MessageBody() data: { callSid: string },
+  ) {
+    try {
+      this.logger.log(`User ${client.userId} ending call ${data.callSid}`);
+
+      await this.voiceService.endCall(data.callSid, client.tenantId);
+
+      this.activeCallsByUser.delete(client.userId);
+
+      client.emit('call:ended', { callSid: data.callSid });
+
+      return { success: true };
+    } catch (error) {
+      this.logger.error('Failed to end call', error);
+      return { success: false, error: error.message };
+    }
+  }
+
+  /**
+   * Send DTMF tones
+   */
+  @SubscribeMessage('call:dtmf')
+  async handleDtmf(
+    @ConnectedSocket() client: AuthenticatedSocket,
+    @MessageBody() data: { callSid: string; digit: string },
+  ) {
+    try {
+      await this.voiceService.sendDtmf(
+        data.callSid,
+        data.digit,
+        client.tenantId,
+      );
+
+      return { success: true };
+    } catch (error) {
+      this.logger.error('Failed to send DTMF', error);
+      return { success: false, error: error.message };
+    }
+  }
+
+  /**
+   * Emit incoming call notification to specific user
+   */
+  async notifyIncomingCall(userId: string, callData: any) {
+    const socket = this.connectedUsers.get(userId);
+    if (socket) {
+      socket.emit('call:incoming', callData);
+      this.logger.log(`Notified user ${userId} of incoming call`);
+    } else {
+      this.logger.warn(`User ${userId} not connected to receive call notification`);
+    }
+  }
+
+  /**
+   * Emit call status update to user
+   */
+  async notifyCallUpdate(userId: string, callData: any) {
+    const socket = this.connectedUsers.get(userId);
+    if (socket) {
+      socket.emit('call:update', callData);
+    }
+  }
+
+  /**
+   * Emit AI transcript to user
+   */
+  async notifyAiTranscript(userId: string, data: { callSid: string; transcript: string; isFinal: boolean }) {
+    const socket = this.connectedUsers.get(userId);
+    if (socket) {
+      socket.emit('ai:transcript', data);
+    }
+  }
+
+  /**
+   * Emit AI suggestion to user
+   */
+  async notifyAiSuggestion(userId: string, data: any) {
+    const socket = this.connectedUsers.get(userId);
+    this.logger.log(`notifyAiSuggestion - userId: ${userId}, socket connected: ${!!socket}, total connected users: ${this.connectedUsers.size}`);
+    if (socket) {
+      this.logger.log(`Emitting ai:suggestion event with data:`, JSON.stringify(data));
+      socket.emit('ai:suggestion', data);
+    } else {
+      this.logger.warn(`No socket connection found for userId: ${userId}`);
+      this.logger.log(`Connected users: ${Array.from(this.connectedUsers.keys()).join(', ')}`);
+    }
+  }
+
+  /**
+   * Emit AI action result to user
+   */
+  async notifyAiAction(userId: string, data: any) {
+    const socket = this.connectedUsers.get(userId);
+    if (socket) {
+      socket.emit('ai:action', data);
+    }
+  }
+
+  /**
+   * Get connected users for a tenant
+   */
+  getConnectedUsers(tenantDomain?: string): string[] {
+    const userIds: string[] = [];
+    
+    for (const [userId, socket] of this.connectedUsers.entries()) {
+      // If tenantDomain specified, filter by tenant
+      if (!tenantDomain || socket.tenantSlug === tenantDomain) {
+        userIds.push(userId);
+      }
+    }
+    
+    return userIds;
+  }
+}