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>

IMPLEMENTATION_NOTES.md

@@ -99,7 +99,6 @@ class MyControl extends ControlBase {
 #### With TestDrive-JSUI System
 - **Component Discovery**: Listed by `scripts/list_components.py`
 - **TDD Testing**: Validated by `tests/test_component_listing.py`
-- **Legacy Support**: `DocumentControlsLegacy` maintains backward compatibility
 
 #### With MarkiTect md-render
 - **Plugin Integration**: Ready for deployment via Makefile targets
@@ -116,7 +115,6 @@ class MyControl extends ControlBase {
 #### Automated Testing
 - Component listing tests ensure discovery
 - Integration tests validate interaction patterns
-- Legacy tests maintain backward compatibility
 
 ### Performance Considerations