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>

js/components/document-controls-legacy.js

@@ -1,22 +0,0 @@
-/**
- * Legacy wrapper for DocumentControls
- *
- * This file provides backward compatibility for tests that reference
- * DocumentControlsLegacy. It simply re-exports the current DocumentControls
- * implementation with the legacy name.
- */
-
-const { DocumentControls } = require('./document-controls.js');
-
-// Re-export as legacy name for backward compatibility
-const DocumentControlsLegacy = DocumentControls;
-
-// Export for use in tests and other modules
-if (typeof module !== 'undefined' && module.exports) {
-    module.exports = { DocumentControlsLegacy };
-}
-
-// Export for browser use
-if (typeof window !== 'undefined') {
-    window.DocumentControlsLegacy = DocumentControls;
-}