Add JWT authentication with animated login page

- Backend: JWT auth with /api/auth/login and /api/auth/verify endpoints
- Middleware: requireAuth protects all /api routes except /api/auth
- Frontend: Animated characters login page with eye-tracking effects
- Auth state persisted in localStorage with token verification on mount
- Sidebar logout button, 401 auto-logout, 30-day token expiry
- shadcn button, input, checkbox, label components added

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

server/package.json

@@ -8,16 +8,18 @@
     "start": "tsx src/index.ts"
   },
   "dependencies": {
-    "express": "^4.21.0",
-    "ssh2": "^1.16.0",
     "cors": "^2.8.5",
-    "dotenv": "^16.4.0"
+    "dotenv": "^16.4.0",
+    "express": "^4.21.0",
+    "jsonwebtoken": "^9.0.3",
+    "ssh2": "^1.16.0"
   },
   "devDependencies": {
-    "@types/express": "^5.0.0",
-    "@types/ssh2": "^1.15.0",
     "@types/cors": "^2.8.17",
-    "typescript": "^5.8.0",
-    "tsx": "^4.19.0"
+    "@types/express": "^5.0.0",
+    "@types/jsonwebtoken": "^9.0.10",
+    "@types/ssh2": "^1.15.0",
+    "tsx": "^4.19.0",
+    "typescript": "^5.8.0"
   }
 }