Ultra-simple version: direct CSV loading, no database

Initialize database at startup instead of build time to avoid Docker cache issues

Change trade_date column to TEXT type in database schema

Add verification for trade_date in database

Force rebuild database by removing old db file

Add database verification and debug output

Deploy to Hugging Face Spaces - SQLite version with 10k sample data

Enhances platform with robust monitoring and notifications

chore: change DB to SQLite for Hugging Face Space deployment

Initial commit for Hugging Face Space