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/test-full-integration.js

@@ -19,18 +19,18 @@ runner.describe('Full Component Integration Tests', () => {
             const sectionModule = require('../core/section-manager.js');
             const domModule = require('../components/dom-renderer.js');
             const debugModule = require('../components/debug-panel.js');
-            const controlsModule = require('../components/document-controls-legacy.js');
+            const controlsModule = require('../components/document-controls.js');
 
             runner.expect(sectionModule.SectionManager).toBeTruthy();
             runner.expect(domModule.DOMRenderer).toBeTruthy();
             runner.expect(debugModule.DebugPanel).toBeTruthy();
-            runner.expect(controlsModule.DocumentControlsLegacy).toBeTruthy();
+            runner.expect(controlsModule.DocumentControls).toBeTruthy();
 
             // Set globals for other tests
             global.ExtractedSectionManager = sectionModule.SectionManager;
             global.ExtractedDOMRenderer = domModule.DOMRenderer;
             global.ExtractedDebugPanel = debugModule.DebugPanel;
-            global.ExtractedDocumentControls = controlsModule.DocumentControlsLegacy;
+            global.ExtractedDocumentControls = controlsModule.DocumentControls;
 
         } catch (error) {
             throw new Error(`Failed to load extracted components: ${error.message}`);