Add clone support for scene presets and update TODO

- Add clone_preset() to ScenePresetStore with deep copy of target snapshots
- Add POST /scene-presets/{id}/clone API endpoint
- Add clone button to scene preset cards in Automations tab
- Add i18n keys for clone feedback in all 3 locales
- Add TODO items for dashboard stats collapse and protocol badge review

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

server/src/wled_controller/static/js/app.js

@@ -85,7 +85,7 @@ import {
 } from './features/automations.js';
 import {
     openScenePresetCapture, editScenePreset, saveScenePreset, closeScenePresetEditor,
-    activateScenePreset, recaptureScenePreset, deleteScenePreset,
+    activateScenePreset, recaptureScenePreset, cloneScenePreset, deleteScenePreset,
     addSceneTarget, removeSceneTarget,
 } from './features/scene-presets.js';
 
@@ -325,6 +325,7 @@ Object.assign(window, {
     closeScenePresetEditor,
     activateScenePreset,
     recaptureScenePreset,
+    cloneScenePreset,
     deleteScenePreset,
     addSceneTarget,
     removeSceneTarget,