fix: resolve React Error #310 and refactor admin section

- Fix React bug #33580: remove Suspense boundaries co-located with Link components
- Delete settings/loading.tsx and admin/loading.tsx (root cause of race condition)
- Convert all admin navigation from Next.js Link to anchor tags
- Move admin pages to dedicated (admin) route group
- Add AdminHeader matching main header visual design
- Add AdminSidebar with anchor-based navigation
- Add /api/admin/models route handler (replaces server actions for GET)
- Add /api/debug/client-error for server-side browser error reporting
- Add useNoteRefreshOptional() to fix crash in AdminHeader
- Hide Admin Dashboard menu for non-admin users
- Change app icons from yellow to blue (#3A7CA5) matching brand primary
- Fix admin search bar width to match main header

Made-with: Cursor

memento-note/package.json

@@ -71,14 +71,15 @@
     "resend": "^6.12.0",
     "rss-parser": "^3.13.0",
     "sonner": "^2.0.7",
+    "sharp": "^0.34.0",
     "tailwind-merge": "^3.4.0",
     "tinyld": "^1.3.4",
     "vazirmatn": "^33.0.3",
-    "zod": "^4.3.5"
+    "zod": "^4.3.5",
+    "@prisma/client": "^5.22.0"
   },
   "devDependencies": {
     "@playwright/test": "^1.57.0",
-    "@prisma/client": "^5.22.0",
     "@tailwindcss/postcss": "^4",
     "@tailwindcss/typography": "^0.5.19",
     "@types/bcryptjs": "^2.4.6",