Establishes shared infrastructure for content services:
- Common dependencies (DocumentRepository, AuditService, UserIdKeyResolver)
- Audit helper methods (sync and async)
- Inherits from RepositoryService for scope/query support
- Adds ContentServiceConstants for shared constants (batch page size)
Updated tracking test to look for correct assembly location.
Tracking test now fails (expected) - signals class exists for future work.
🤖 Generated with [Claude Code](https://claude.com/claude-code)
Co-Authored-By: Claude <noreply@anthropic.com>
Adds unit test file for ContentServiceBase with documented test cases.
Tests are commented out until ContentServiceBase is created in Phase 1:
- 2 audit helper method tests
- 2 scope provider access pattern tests
- 2 logger injection tests
- 1 repository access test
🤖 Generated with [Claude Code](https://claude.com/claude-code)
Co-Authored-By: Claude <noreply@anthropic.com>
