Add multi-service Docker setup, Postgres migrations, and messaging API cleanup

.cursor/commands/security-audit.md

@@ -8,7 +8,6 @@ Perform a comprehensive security audit of the FromChat application codebase.
 
 - React/TypeScript frontend
 - Python FastAPI backend
-- End-to-end encryption for DMs and calls
 - Caddy reverse proxy with security headers
 - WebSocket support for real-time features
 - Electron support for desktop app
@@ -122,7 +121,7 @@ Provide a **clean, concise report** with:
 - CORS configuration in backend/app.py
 - Password validation in backend/validation.py
 - JWT token generation and validation
-- E2E encryption implementation (NaCl, AES-GCM)
+- Encryption implementation (NaCl, AES-GCM)
 - File upload sanitization
 - Authorization checks on sensitive endpoints
 - Rate limiting configuration

.cursor/rules/general.mdc

@@ -21,6 +21,7 @@ When working with this project, follow these rules:
 ## File Operations
 - If possible, try to update files in a single edit when making multiple changes.
 - Do NOT "cd" to the project directory.
+- NEVER edit/delete/regenerate .env files without explicit permission.
 
 ## Testing & Validation
 - Do NOT "test the implementation" when you are done. The only exception is when you