feat:

  1. ✅ Automatic Database Recording: All nanobanana tasks are now recorded in PostgreSQL with full metadata
  2. ✅ Task Tracking: Background scheduler automatically checks and updates task status
  3. ✅ Historical Queries: Can query user history, statistics, and task results from database
  4. ✅ Unified Interface: Uses the same universal task queue as other AI services
  5. ✅ Metadata Preserved: Style information (style_id, style_name, subject) is saved for analysis

  Test Results:

  Successfully tested with two tasks:
  - Task 1 (1-2479712b...): Watercolor style - ✅ Saved to database
  - Task 2 (6-67cdd8b6...): Chinese ink painting - ✅ Saved to database

  Both tasks show:
  - ✅ Task submitted successfully
  - ✅ Saved to database with metadata
  - ✅ Status checking working properly
  - ✅ Images generated and URLs returned