- Konvertiert lead-engine/Dockerfile zu Multi-Stage Build mit requirements.txt.
- Aktualisiert heatmap-tool und transcription-tool auf Python 3.11-slim.
- Entfernt unnötige Build-Tools (build-essential) aus den Runtime-Images.
- Deaktiviert --reload Modus für Produktionsstabilität.
- 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.