docs: mark Phase 7 complete in design document

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Co-Authored-By: Claude <noreply@anthropic.com>

docs/plans/2025-12-19-contentservice-refactor-design.md

@@ -399,7 +399,7 @@ Each phase MUST run tests before and after to verify no regressions.
 | 4 | Move Service | All ContentService*Tests + Sort/MoveToRecycleBin tests | All pass | ✅ Complete |
 | 5 | Publish Operation Service | All ContentService*Tests + Notification ordering tests | All pass | ✅ Complete |
 | 6 | Permission Manager | All ContentService*Tests + Permission tests | All pass | ✅ Complete |
-| 7 | Blueprint Manager | All ContentService*Tests | All pass | Pending |
+| 7 | Blueprint Manager | All ContentService*Tests | All pass | ✅ Complete |
 | 8 | Facade | **Full test suite** | All pass | Pending |
 
 ### Phase Details
@@ -439,7 +439,12 @@ Each phase MUST run tests before and after to verify no regressions.
    - 3 methods: SetPermissions, SetPermission, GetPermissions
    - Updated `ContentService.cs` to delegate permission operations
    - Git tag: `phase-6-permission-extraction`
-8. **Phase 7: Blueprint Manager** - Final cleanup
+8. **Phase 7: Blueprint Manager** ✅ - Complete! Created:
+   - `ContentBlueprintManager.cs` - Public sealed class (~370 lines)
+   - 10 methods: GetBlueprintById (2), SaveBlueprint (2), DeleteBlueprint, CreateContentFromBlueprint, GetBlueprintsForContentTypes, DeleteBlueprintsOfTypes, DeleteBlueprintsOfType
+   - Includes audit logging for save/delete operations
+   - Updated `ContentService.cs` to delegate blueprint operations (~149 lines removed)
+   - Git tag: `phase-7-blueprint-extraction`
 9. **Phase 8: Facade** - Wire everything together, add async methods
 
 ### Test Execution Commands