feat: Implement interactive query and expiry sweep agents with a Gradio UI, add a Hugging Face pre-push hook, and refine .gitignore.

feat: Implement interactive query agent with MCP client and Gradio UI, and add verification script.

Fix .gitignore and resolve conflicts

feat: Update .gitignore to include `.venv/`, `__pycache__/`, and `*.log` patterns.

Merge remote changes

Clean commit for HF push