Based on the git diff, here's an appropriate commit message:

feat: migrate from ESLint to Biome for linting

- Replaced ESLint configuration with Biome config using ultracite core preset
- Removed ESLint dependencies including eslint, eslint-config-next, and @eslint/eslintrc
- Added @biomejs/biome and ultracite dependencies
- Updated lint script in package.json to use ultracite check instead of eslint

The commit shows a significant tooling change from ESLint to Biome for code linting, which affects

Author: DarkPhoenix2704

.eslintrc.json

@@ -0,0 +1,6 @@
+{
+  "$schema": "./node_modules/@biomejs/biome/configuration_schema.json",
+  "extends": [
+    "ultracite/core"
+  ]
+}

biome.jsonc

@@ -12,7 +12,7 @@
     "generate-overview": "tsx scripts/generate-llm-content.ts",
     "generate-llm-content": "tsx scripts/generate-llm-content.ts",
     "validate-links": "tsx -C import scripts/validateLinks.ts",
-    "lint": "eslint . && npm run validate-links",
+    "lint": "ultracite check . && npm run validate-links",
     "postbuild": "next-sitemap && npm run generate-blog-sitemap && npm run generate-llm-content"
   },
   "dependencies": {
@@ -65,7 +65,7 @@
     "zod": "^4.1.12"
   },
   "devDependencies": {
-    "@eslint/eslintrc": "^3.3.1",
+    "@biomejs/biome": "2.3.0",
     "@tailwindcss/postcss": "^4.1.15",
     "@types/hast": "^3.0.4",
     "@types/mdx": "^2.0.13",
@@ -74,11 +74,10 @@
     "@types/react-dom": "^19.2.2",
     "babel-plugin-react-compiler": "^1.0.0",
     "dotenv": "^17.0.0",
-    "eslint": "^8",
-    "eslint-config-next": "16.0.0",
     "postcss": "^8.5.6",
     "tailwindcss": "^4.1.15",
     "tsx": "^4.20.6",
-    "typescript": "^5.8.3"
+    "typescript": "^5.8.3",
+    "ultracite": "6.0.4"
   }
 }