- build_skill_assignments() now returns INTEGER (1-5) for target_level
- Previously returned string names ('einsteiger', 'grundlagen', etc.)
- Caused 91/95 import failures with 'invalid input syntax for type integer'
- Remaining 4 failures are wiki pages missing both goal AND execution (invalid data)
Issue: Wiki import - dict-cursor fixes phase 2
- Implemented a new SQL migration for wiki import tracking tables.
- Created an import router for handling MediaWiki imports of exercises, skills, and methods.
- Developed a Semantic MediaWiki API client for direct API interactions.
- Added a mapper to convert SMW properties to local database fields.
- Introduced background tasks for asynchronous import processing.
- Implemented logging and error handling for import operations.
- Added endpoints for previewing imports, checking import status, and managing import references.
