- Implemented `library_content_visibility_sql` for managing visibility of exercises, training planning, and framework programs based on tenant context.
- Updated access layer documentation to reflect changes in endpoint visibility and governance requirements.
- Bumped application version to 0.8.23 in both backend and frontend files.
- Enhanced changelog to document the new version and changes made in this release.
- Introduced tenant context resolution in the profiles API, allowing for effective club identification based on user memberships.
- Updated the `GET /profiles/me` endpoint to return `effective_club_id` and removed reliance on the deprecated `X-Active-Club-Id` header.
- Bumped application version to 0.8.22 in both backend and frontend files.
- Enhanced changelog to document the new version and changes made in this release.
