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/tests/button-events.test.js

@@ -33,10 +33,10 @@ describe('Button Functionality and DOM Events', () => {
 
     mockSection = document.querySelector('.section');
 
-    // Load components - using legacy component for backward compatibility
-    require('../components/document-controls-legacy.js');
-    if (global.DocumentControlsLegacy) {
-      documentControls = new global.DocumentControlsLegacy(document.getElementById('content'));
+    // Load components
+    require('../components/document-controls.js');
+    if (global.DocumentControls) {
+      documentControls = new global.DocumentControls(document.getElementById('content'));
     }
   });