Add per-tab tutorials, profile expand/collapse, and fix card animation

- Add sub-tutorials for Dashboard, Targets, Sources, and Profiles tabs
  with ? trigger buttons, en/ru/zh translations, and hidden-ancestor
  skip via offsetParent check
- Add expand/collapse all buttons to Profiles tab toolbar
- Move dashboard poll slider from section header to toolbar
- Fix cardEnter animation forcing opacity:1 on disabled profile cards
- Use data-card-section selectors instead of data-cs-toggle to avoid
  z-index misalignment during tutorial spotlight
- Add tutorial sync convention to CLAUDE.md

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

server/src/wled_controller/static/css/cards.css

@@ -69,7 +69,7 @@ section {
 /* ── Card entrance animation ── */
 @keyframes cardEnter {
     from { opacity: 0; transform: translateY(12px); }
-    to { opacity: 1; transform: translateY(0); }
+    to { transform: translateY(0); }
 }
 
 .card-enter {