- Remove dotenv dependency, implement lightweight Bun-native env loader
- Replace Node.js fs/path with Bun file APIs (Bun.file, Bun.write)
- Fix Planner task creation to use form's due date with proper UTC handling
- Make table name, Planner assignee configurable via activeConfig and env vars
- Remove all hardcoded test values for PROD readiness
- Update NOTES.md with PROD mode checklist