refactor: complete post-migration cleanup

Implemented all cleanup items from CLEANUP_REPORT.md:

Legacy Code Removal:
- Removed document-controls-legacy.js wrapper
- Updated 4 test files to use DocumentControls directly
- Updated scripts/list_components.py acronym mappings
- Updated tests/test_component_listing.py expectations

Archive and Organization:
- Moved relicts/ to docs/prototypes/ with README explaining history
- Moved MIGRATION_STATUS.md to docs/migration/
- Removed IMPLEMENTATION_NOTES.md legacy references

Test Verification:
- All 68 JavaScript tests passing (Jest)
- All 3 Python component tests passing
- No breaking changes to functionality

The codebase is now cleaner with no legacy wrappers or empty
directories. Migration is complete and documented.

🤖 Generated with [Claude Code](https://claude.com/claude-code)

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

tests/test_component_listing.py

@@ -35,7 +35,7 @@ class TestComponentListing:
             'EditControl': 'js/controls/edit-control.js',
             'DebugControl': 'js/controls/debug-control.js',
             'DebugPanel': 'js/components/debug-panel.js',
-            'DocumentControlsLegacy': 'js/components/document-controls-legacy.js',
+            'DocumentControls': 'js/components/document-controls.js',
             'SectionManager': 'js/core/section-manager.js',
             'DOMRenderer': 'js/components/dom-renderer.js'
         }