Add auto-start targets feature with dashboard section

- Add auto_start boolean field to PictureTarget model (persisted per-target)
- Wire auto_start through API schemas, routes, and store
- Auto-start targets on server boot in main.py lifespan
- Add star toggle button on target cards (next to delete button)
- Add auto-start section on dashboard between performance and profiles
- Remove auto-start section from profiles tab

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

server/src/wled_controller/static/locales/ru.json

@@ -552,6 +552,10 @@
   "profiles.error.name_required": "Введите название",
   "profiles.toggle_all.start": "Запустить все цели",
   "profiles.toggle_all.stop": "Остановить все цели",
+  "autostart.title": "Автозапуск целей",
+  "autostart.toggle.enabled": "Автозапуск включён",
+  "autostart.toggle.disabled": "Автозапуск отключён",
+  "autostart.goto_target": "Перейти к цели",
   "time.hours_minutes": "{h}ч {m}м",
   "time.minutes_seconds": "{m}м {s}с",
   "time.seconds": "{s}с",