feat(trading-twins): Finalize Booking Engine & Infrastructure [31988f42]

- Implemented 'Direct Calendar Booking' logic replacing MS Bookings API.
- Integrated Dual-App architecture for Graph API (Sender vs. Reader permissions).
- Added FastAPI feedback server for Teams and Email interactions.
- Configured Nginx proxy for public feedback URL access.
- Updated Docker configuration (ports, env vars, dependencies).
- Finalized documentation in lead-engine/README.md.

docker-compose.yml

@@ -252,6 +252,7 @@ services:
     restart: unless-stopped
     ports:
       - "8501:8501"
+      - "8004:8004"
     env_file:
       - .env
     environment:
@@ -260,6 +261,10 @@ services:
       # Explicitly pass keys to ensure availability
       SERP_API: "${SERP_API}"
       GEMINI_API_KEY: "${GEMINI_API_KEY}"
+      # Calendar App Credentials
+      CAL_APPID: "${CAL_APPID}"
+      CAL_SECRET: "${CAL_SECRET}"
+      CAL_TENNANT_ID: "${CAL_TENNANT_ID}"
     volumes:
       - ./lead-engine:/app
       # We need to mount the root connector module so it can be imported inside the container