4 commits

Author	SHA1	Message	Date
Marko Djordjevic	d1557a3846	fix: resolve numpy type conversion issues in ML service data access ... - Convert numpy.int64 to Python int before passing to SQLAlchemy queries - Prevents psycopg2.ProgrammingError: can't adapt type 'numpy.int64' - Applied to get_candles(), get_span_annotations(), and get_point_annotations() - All ML service database access tests now passing successfully	2026-02-17 14:10:21 +01:00
Marko Djordjevic	5377431c9d	test: verify Next.js application works with PostgreSQL ... - Updated .env to use DATABASE_URL instead of DATABASE_PATH - Tested all API endpoints: health, charts, candles, span annotations - Confirmed JSONB fields work correctly (geometry, sub_spans, model_prediction) - All 2,836 rows accessible via API - Database connection pooling working correctly	2026-02-17 14:02:22 +01:00
Marko Djordjevic	bfe437857b	feat: add Python migration script and successfully test SQLite to PostgreSQL data migration ... - Created scripts/migrate-sqlite-to-postgres.py as alternative to TypeScript version - Handles all type conversions: timestamps, booleans, and JSONB fields - Successfully migrated all 2,836 rows from SQLite to PostgreSQL - Verified data integrity: all 6 tables migrated correctly - Charts: 1, Candles: 2,592, Annotations: 4, Span annotations: 223	2026-02-17 14:01:21 +01:00
Marko Djordjevic	5f70f13da3	feat: migrate from SQLite to PostgreSQL - complete schema and API updates ... - Remove better-sqlite3, add pg driver - Convert schema to PostgreSQL types (serial, timestamp, boolean, jsonb) - Generate fresh PostgreSQL migrations - Update database connection layer with pg.Pool - Fix all API routes: remove JSON.parse/stringify, use native timestamps and booleans - Update drizzle.config.ts and .env.example for PostgreSQL	2026-02-17 13:43:06 +01:00