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/features/scene-presets.js

@@ -9,7 +9,7 @@ import { showToast, showConfirm } from '../core/ui.js';
 import { Modal } from '../core/modal.js';
 import { CardSection } from '../core/card-sections.js';
 import {
-    ICON_SCENE, ICON_CAPTURE, ICON_START, ICON_EDIT, ICON_REFRESH, ICON_TARGET,
+    ICON_SCENE, ICON_CAPTURE, ICON_START, ICON_EDIT, ICON_REFRESH, ICON_TARGET, ICON_CLONE,
 } from '../core/icons.js';
 import { scenePresetsCache } from '../core/state.js';
 import { cardColorStyle, cardColorButton } from '../core/card-colors.js';
@@ -61,6 +61,7 @@ export function createSceneCard(preset) {
             ${updated ? `<span class="stream-card-prop">${updated}</span>` : ''}
         </div>
         <div class="card-actions">
+            <button class="btn btn-icon btn-secondary" onclick="cloneScenePreset('${preset.id}')" title="${t('common.clone')}">${ICON_CLONE}</button>
             <button class="btn btn-icon btn-secondary" onclick="editScenePreset('${preset.id}')" title="${t('scenes.edit')}">${ICON_EDIT}</button>
             <button class="btn btn-icon btn-secondary" onclick="recaptureScenePreset('${preset.id}')" title="${t('scenes.recapture')}">${ICON_REFRESH}</button>
             <button class="btn btn-icon btn-success" onclick="activateScenePreset('${preset.id}')" title="${t('scenes.activate')}">${ICON_START}</button>
@@ -304,6 +305,26 @@ export async function recaptureScenePreset(presetId) {
     }
 }
 
+// ===== Clone =====
+
+export async function cloneScenePreset(presetId) {
+    try {
+        const resp = await fetchWithAuth(`/scene-presets/${presetId}/clone`, {
+            method: 'POST',
+        });
+        if (resp.ok) {
+            showToast(t('scenes.cloned'), 'success');
+            _reloadScenesTab();
+        } else {
+            const err = await resp.json().catch(() => ({}));
+            showToast(err.detail || t('scenes.error.clone_failed'), 'error');
+        }
+    } catch (error) {
+        if (error.isAuth) return;
+        showToast(t('scenes.error.clone_failed'), 'error');
+    }
+}
+
 // ===== Delete =====
 
 export async function deleteScenePreset(presetId) {