feat: token compression, geocoding, 18-tool layer, advisory prompt rule

feat: migrate to Langfuse observability

Update requirements.txt with missing dependencies

Update chat backend to include agentic features

feat: revamped project structure

Fix: Restore dependencies

Fix: Add asyncpg and configure Celery SSL

Fix: Add slowapi and make Azure keys Optional

Fix: Upgrade to Py3.11 and unpin strict versions

Migration to HF