chore: switch from eslint to oxlint

- Replace eslint and its plugins with oxlint, add .oxlintrc.json
- Add type-check and check scripts, drop deploy and predeploy
- Remove the GitHub Pages deploy workflow
- Move dayjs setup to src/lib and export the configured instance
- Bump React to 19.3, Vite to 8.3, Tailwind to 4.3 and other deps
- Reformat the contact page with prettier

package.json

@@ -6,38 +6,34 @@
   "scripts": {
     "dev": "vite",
     "build": "tsc -b && vite build",
-    "lint": "eslint .",
-    "preview": "vite preview",
-    "deploy": "pnpm build && gh-pages -d dist",
-    "predeploy": "pnpm build"
+    "lint": "oxlint",
+    "type-check": "tsc --noEmit",
+    "check": "oxlint && tsc --noEmit",
+    "preview": "vite preview"
   },
   "dependencies": {
-    "@reduxjs/toolkit": "^2.11.2",
-    "@tailwindcss/vite": "^4.2.2",
-    "axios": "^1.16.1",
-    "dayjs": "^1.11.20",
-    "react": "^19.2.6",
-    "react-dom": "^19.2.6",
+    "@reduxjs/toolkit": "^2.12.0",
+    "@tailwindcss/vite": "^4.3.3",
+    "axios": "^1.20.0",
+    "dayjs": "^1.11.23",
+    "react": "^19.3.0",
+    "react-dom": "^19.3.0",
     "react-redux": "^9.3.0",
-    "react-router": "^7.16.0",
-    "react-router-dom": "^7.16.0",
+    "react-router": "^7.18.3",
+    "react-router-dom": "^7.18.3",
     "redux-persist": "^6.0.0",
-    "tailwindcss": "^4.3.0"
+    "tailwindcss": "^4.3.3"
   },
   "devDependencies": {
-    "@eslint/js": "^9.39.4",
-    "@types/node": "^25.9.1",
-    "@types/react": "^19.2.15",
-    "@types/react-dom": "^19.2.3",
-    "@vitejs/plugin-react": "^6.0.2",
-    "eslint": "^9.39.4",
-    "eslint-plugin-react": "^7.37.5",
-    "eslint-plugin-react-hooks": "^7.1.1",
-    "eslint-plugin-react-refresh": "^0.5.2",
-    "globals": "^17.6.0",
-    "prettier": "^3.8.3",
+    "@eslint/js": "^9.39.5",
+    "@types/node": "^25.9.6",
+    "@types/react": "^19.3.0",
+    "@types/react-dom": "^19.3.0",
+    "@vitejs/plugin-react": "^6.1.1",
+    "globals": "^17.12.0",
+    "oxlint": "^1.82.0",
+    "prettier": "^3.9.6",
     "typescript": "~6.0.3",
-    "typescript-eslint": "^8.60.0",
-    "vite": "^8.0.15"
+    "vite": "^8.3.0"
   }
 }