feat: RTL/i18n, AI translate+undo, no-refresh saves, settings perf

- RTL: force dir=rtl on LabelFilter, NotesViewToggle, LabelManagementDialog
- i18n: add missing keys (notifications, privacy, edit/preview, AI translate/undo)
- Settings pages: convert to Server Components (general, appearance) + loading skeleton
- AI menu: add Translate option (10 languages) + Undo AI button in toolbar
- Fix: saveInline uses REST API instead of Server Action → eliminates all implicit refreshes in list mode
- Fix: NotesTabsView notes sync effect preserves selected note on content changes
- Fix: auto-tag suggestions now filter already-assigned labels
- Fix: color change in card view uses local state (no refresh)
- Fix: nav links use <Link> for prefetching (Settings, Admin)
- Fix: suppress duplicate label suggestions already on note
- Route: add /api/ai/translate endpoint

keep-notes/prisma/client-generated/package.json

@@ -1,5 +1,5 @@
 {
-  "name": "prisma-client-c6853a2d560fc459913c7f241f4427cd8f8957f5474f01e1a2cabb8c1f55d4d8",
+  "name": "prisma-client-2331c58c0b3910e5ab8251136c7336826e2ba4756d13e7c07da246b228c31c54",
   "main": "index.js",
   "types": "index.d.ts",
   "browser": "index-browser.js",