Add Qdrant stats endpoint for DataView

Update delete_user_permanently to include Firestore deletion

Unpin langchain-openai to resolve dependency conflict

Fix dependencies: Add langchain-openai

Deploy VietQA API with Secure Firebase

Fix router: rag fallback to direct_answer instead of logic_solver

Add chat mode support - natural responses without MCQ format

Add data folder to Dockerfile

Upload 2 files

Upload storage.sqlite

Create data/qdrant_storage/collection/vnpt_knowledge_base/.gitkeep

Delete storage.sqlite

Upload storage.sqlite

Update API code

Fix: Reorder Dockerfile to bust cache

Force rebuild with full requirements

Fix: Use full requirements.txt

Deploy VietQA API

initial commit