Refactor configuration flow (Day 0 vs Day 1 separation) and add startup scripts ...

- Stop AI provider settings from syncing back to config.yaml (stored in DB only now).
- Parameterize frontend port in docker-compose.
- Add start_server.sh and stop_server.sh scripts.
- Update .gitignore to exclude scratch files.

Security & Logic: Implemented ownership-based permission control for agents and added model_name override support for agent tasks

Fix: Localized UI verification feedback for Swarm/OIDC testing, UI locking pre-validation, password fallback parsing fix, and icon corrections

Refactor AI Config and Fix Login failure: Migrated services to a structured api directory, updated backend schemas for multiple TTS/STT providers, and improved settings/chat UI coverage.