feat: Major WhatsApp integration update with Odoo and pause/resume

## Frontend
- Add media display (images, audio, video, docs) in Inbox
- Add pause/resume functionality for WhatsApp accounts
- Fix media URLs to use nginx proxy (relative URLs)

## API Gateway
- Add /accounts/:id/pause and /accounts/:id/resume endpoints
- Fix media URL handling for browser access

## WhatsApp Core
- Add pauseSession() - disconnect without logout
- Add resumeSession() - reconnect using saved credentials
- Add media download and storage for incoming messages
- Serve media files via /media/ static route

## Odoo Module (odoo_whatsapp_hub)
- Add Chat Hub interface with DOLLARS theme (dark, 3-column layout)
- Add WhatsApp/DRRR theme switcher for chat view
- Add "ABRIR CHAT" button in conversation form
- Add send_message_from_chat() method
- Add security/ir.model.access.csv
- Fix CSS scoping to avoid breaking Odoo UI
- Update webhook to handle message events properly

## Documentation
- Add docs/CONTEXTO_DESARROLLO.md with complete project context

## Infrastructure
- Add whatsapp_media Docker volume
- Configure nginx proxy for /media/ route
- Update .gitignore to track src/sessions/ source files

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

docker-compose.yml

@@ -51,6 +51,7 @@ services:
       WS_PORT: 3001
     volumes:
       - whatsapp_sessions:/app/sessions
+      - whatsapp_media:/app/media
     ports:
       - "3001:3001"
     depends_on:
@@ -70,6 +71,9 @@ services:
       REDIS_URL: redis://redis:6379
       JWT_SECRET: ${JWT_SECRET:?JWT_SECRET required}
       WHATSAPP_CORE_URL: http://whatsapp-core:3001
+      WHATSAPP_CORE_PUBLIC_URL: ${WHATSAPP_CORE_PUBLIC_URL:-http://localhost:3001}
+      FLOW_ENGINE_URL: http://flow-engine:8001
+      ODOO_WEBHOOK_URL: ${ODOO_WEBHOOK_URL:-http://192.168.10.188:8069/whatsapp/webhook}
       CORS_ORIGINS: ${CORS_ORIGINS:-http://localhost:5173,http://localhost:3000}
     ports:
       - "8000:8000"
@@ -139,6 +143,7 @@ volumes:
   postgres_data:
   redis_data:
   whatsapp_sessions:
+  whatsapp_media:
 
 networks:
   wac_network: