Move Scenes into Automations tab, smaller Capture button, scene crosslinks

- Merge Scenes tab into Automations tab as a second CardSection below automations
- Make dashboard Capture button match Stop All sizing
- Dashboard scene cards navigate to automations tab on click (crosslink)
- Add scene steps to automations tutorial
- Fix tour.tgt.devices to say "LED controllers" instead of "WLED controllers"
- Update command palette and navigation for new scene location

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

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

@@ -83,7 +83,6 @@ import {
     expandAllAutomationSections, collapseAllAutomationSections,
 } from './features/automations.js';
 import {
-    loadScenes, expandAllSceneSections, collapseAllSceneSections,
     openScenePresetCapture, editScenePreset, saveScenePreset, closeScenePresetEditor,
     activateScenePreset, recaptureScenePreset, deleteScenePreset,
 } from './features/scene-presets.js';
@@ -312,9 +311,6 @@ Object.assign(window, {
     collapseAllAutomationSections,
 
     // scene presets
-    loadScenes,
-    expandAllSceneSections,
-    collapseAllSceneSections,
     openScenePresetCapture,
     editScenePreset,
     saveScenePreset,
@@ -438,9 +434,9 @@ document.addEventListener('keydown', (e) => {
         return;
     }
 
-    // Tab shortcuts: Ctrl+1..5 (skip when typing in inputs)
+    // Tab shortcuts: Ctrl+1..4 (skip when typing in inputs)
     if (!inInput && e.ctrlKey && !e.altKey && !e.shiftKey && !e.metaKey) {
-        const tabMap = { '1': 'dashboard', '2': 'automations', '3': 'targets', '4': 'streams', '5': 'scenes' };
+        const tabMap = { '1': 'dashboard', '2': 'automations', '3': 'targets', '4': 'streams' };
         const tab = tabMap[e.key];
         if (tab) {
             e.preventDefault();