- Added 'x-ae-ignore-extra-fields' header to support stripping unknown fields in POST/PATCH.
- Added automatic resolution of '*_id_random' strings to integer IDs in 'sanitize_payload'.
- Refactored 'post_obj' to return structured (field -> message) validation errors in 'meta.details'.
- Updated 'mk_resp' to support non-string 'details' in response metadata.
- Added 'tests/verify_feedback_fixes.py' to validate logic changes.
Ref: V3 API Refinement Feedback from mcp_agent.
- Updated app/db_sql.py to capture SQL exceptions in thread-local storage for later retrieval.
- Implemented format_db_error() in app/lib_api_crud_v3.py to clean up raw MariaDB error strings.
- Added POST /v3/crud/{obj_type}/validate endpoint for dry-run payload validation.
- Updated main and nested routers to bubble up validation and database errors into the response 'meta.details' field.
- Added tests/test_v3_error_bubbling.py to verify formatting logic.
- Added validators to Person_Base, Journal_Base, Journal_Entry_Base, Address_Base, and Contact_Base to handle null values and unsafe lookups.
- Implemented 'fields_to_exclude_from_db' ClassVar in Journal models to prevent view-only fields from causing DB errors.
- Updated Contact object map to align with DB schema.
- Added comprehensive test suite in 'tests/' directory (model validation, filtering logic).
- Updated GEMINI.md with progress.
