- Update GET /v3/data_store/code/{code} to support 'limit' query parameter.
- Refactor return logic: returns single object if limit=1, otherwise returns a list.
- Clean up formatting in GUIDE__V3_FRONTEND_API.md and sync to agents_sync.
- Finalize unified E2E test script: tests/e2e/test_e2e_v3_data_store_lookup.py.
- Added GET /v3/data_store/code/{code} with hierarchical context-aware fallback.
- Implemented ID Vision standard in Data_Store_Base (string IDs, internal int exclusion).
- Enhanced Data_Store_Base robustness to handle stringified 'NULL' values from the database.
- Fixed legacy router bugs by removing undefined parameters (inc_event_cfg, inc_event_location).
- Corrected type hints and resolved UnboundLocalError in data_store methods.
- Updated Frontend Integration Guide with Section 8: Data Store V3.
- Added unified E2E test script: tests/e2e/test_e2e_v3_data_store_lookup.py.
- Refactor SQL CRUD to use engine.connect() context managers for thread safety
- Optimize connection pooling in lib_sql_core
- Clean up app/routers/api.py to fix duplicate definitions and OpenAPI KeyError
- Add 'default_qry_str' to searchable_fields for Event, Session, Presentation, Presenter, Badge, and Journal
- Add 'event_location_name' to searchable_fields for Event Session
- Verified 20/20 E2E success via repro_intermittent_errors.py
- Add POST /api/authenticate_passcode to verify site access codes
- Refactor sign_jwt to support arbitrary role flags (super, admin, etc.)
- Update dependencies_v3 to extract role flags from JWT payloads
- Add E2E test for passcode auth verification
- Patched request_jwt to strip privileged IDs when signing with public keys
- Updated AccountContext and V3 dependencies to preserve JWT payloads for guests
- Whitelisted Archive, Post, Event, and other core objects for public read access
- Added 'default_qry_str' to Event searchable fields
- Added test_e2e_jwt_guest_auth.py for security verification
