chore: Update all dependencies to absolute latest versions

Backend updates:
- elysia: 1.1.13 -> 1.4.25
- @elysiajs/cors: 1.1.0 -> 1.4.1
- @elysiajs/swagger: 1.1.0 -> 1.3.1
- pg: 8.13.1 -> 8.18.0
- postgres: 3.4.5 -> 3.4.8
- dotenv: 16.4.7 -> 17.3.1

Frontend updates:
- next: 16.0.0 -> 16.1.6
- recharts: 2.16.0 -> 3.7.0 (MAJOR UPDATE)
- lucide-react: 0.475.0 -> 0.574.0
- date-fns: 4.2.0 -> 4.1.0
- @radix-ui/react-dialog: 1.1.3 -> 1.1.15
- @radix-ui/react-dropdown-menu: 2.1.5 -> 2.1.16
- @radix-ui/react-slot: 1.1.2 -> 1.2.4
- @radix-ui/react-tabs: 1.1.2 -> 1.1.13
- @radix-ui/react-toast: 1.2.6 -> 1.2.15
- tailwind-merge: 2.7.0 -> 3.5.0 (MAJOR UPDATE)
- tailwindcss: 3.4.18 -> 4.2.0 (MAJOR UPDATE)
- typescript: 5.8.0 -> 5.9.3
- autoprefixer: 10.4.21 -> 10.4.24

backend/package.json

@@ -8,12 +8,12 @@
     "db:seed": "bun run src/db/seed.ts"
   },
   "dependencies": {
-    "@elysiajs/cors": "^1.1.0",
-    "@elysiajs/swagger": "^1.1.0",
-    "elysia": "^1.1.13",
-    "pg": "^8.13.1",
-    "postgres": "^3.4.5",
-    "dotenv": "^16.4.7",
+    "@elysiajs/cors": "^1.4.1",
+    "@elysiajs/swagger": "^1.3.1",
+    "elysia": "^1.4.25",
+    "pg": "^8.18.0",
+    "postgres": "^3.4.8",
+    "dotenv": "^17.3.1",
     "zod": "^3.24.1",
     "bcryptjs": "^2.4.3",
     "jsonwebtoken": "^9.0.2"