chore: remove deprecated files and configurations

- Deleted .gitignore, biome.json, next.config.ts, package.json, pnpm-lock.yaml, pnpm-workspace.yaml, postcss.config.mjs, README.md, and various API, component, and utility files to clean up the codebase.
- Removed unused database files and migration scripts to streamline the project structure.
- Eliminated obsolete hooks and services to enhance maintainability and reduce clutter.

package.json

@@ -1,47 +0,0 @@
-{
-  "name": "ollahub",
-  "version": "0.1.0",
-  "private": true,
-  "scripts": {
-    "predev": "powershell -ExecutionPolicy Bypass -File scripts/ensure-ollama.ps1 && tsx scripts/init-db.ts",
-    "prebuild": "tsx scripts/init-db.ts",
-    "dev": "next dev",
-    "build": "next build",
-    "start": "next start",
-    "lint": "biome check",
-    "format": "biome format --write"
-  },
-  "dependencies": {
-    "better-sqlite3": "^12.4.1",
-    "class-variance-authority": "^0.7.1",
-    "clsx": "^2.1.1",
-    "lucide-react": "^0.548.0",
-    "next": "16.0.0",
-    "next-themes": "^0.3.0",
-    "ollama": "^0.5.11",
-    "react": "19.2.0",
-    "react-dom": "19.2.0",
-    "react-markdown": "^10.1.0",
-    "react-syntax-highlighter": "^16.0.0",
-    "react-virtualized-auto-sizer": "^1.0.26",
-    "react-window": "^2.2.2",
-    "react-window-infinite-loader": "^2.0.0",
-    "refractor": "^3.6.0",
-    "rehype-highlight": "^7.0.2",
-    "rehype-raw": "^7.0.0",
-    "remark-gfm": "^4.0.1",
-    "tailwind-merge": "^3.3.1"
-  },
-  "devDependencies": {
-    "@biomejs/biome": "2.2.0",
-    "@tailwindcss/postcss": "^4",
-    "@types/better-sqlite3": "^7.6.13",
-    "@types/node": "^20",
-    "@types/react": "^19",
-    "@types/react-dom": "^19",
-    "@types/react-window": "^2.0.0",
-    "tailwindcss": "^4",
-    "tsx": "^4.20.6",
-    "typescript": "^5"
-  }
-}