chore: remove nixpacks

nixpacks.json

@@ -1,27 +0,0 @@
-{
-  "variables": {
-    "CI": "true",
-    "NIXPACKS_METADATA": "node",
-    "NODE_ENV": "production",
-    "NPM_CONFIG_PRODUCTION": "false"
-  },
-  "phases": {
-    "build": {
-      "dependsOn": ["install"],
-      "cmds": ["pnpm run build"],
-      "cacheDirectories": ["node_modules/.cache", "node_modules/.astro"]
-    },
-    "install": {
-      "dependsOn": ["setup"],
-      "cmds": ["npm install -g corepack@0.24.1 && corepack enable", "pnpm i --frozen-lockfile"],
-      "cacheDirectories": ["/root/.local/share/pnpm/store/v3"],
-      "paths": ["/app/node_modules/.bin"]
-    },
-    "setup": {
-      "nixPkgs": ["nodejs_22"]
-    }
-  },
-  "start": {
-    "cmd": "pnpm run preview"
-  }
-}

package.json

@@ -5,26 +5,25 @@
     "astro": "astro",
     "build": "astro check && astro build",
     "dev": "astro dev",
-    "preview": "astro preview",
-    "start": "astro dev"
+    "preview": "astro preview"
   },
   "devDependencies": {
     "@astrojs/check": "^0.9.10",
     "@astrojs/markdown-remark": "^7.3.1",
-    "@astrojs/mdx": "^8.0.1",
+    "@astrojs/mdx": "^8.0.2",
     "@astrojs/rss": "^4.0.19",
     "@astrojs/sitemap": "^3.7.4",
     "@astrojs/svelte": "^9.0.1",
     "@fontsource-variable/jost": "^5.3.0",
     "@fontsource-variable/playfair-display": "^5.3.0",
     "@iconify-json/ion": "^1.2.7",
-    "astro": "^7.3.3",
+    "astro": "^7.3.5",
     "fuse.js": "^7.5.0",
     "mdast-util-to-string": "^4.0.0",
     "reading-time": "^1.5.0",
     "rehype-autolink-headings": "^7.1.0",
     "remark-toc": "^9.0.0",
-    "sass": "^1.104.1",
+    "sass": "^1.105.0",
     "sharp": "^0.35.4",
     "svelte": "^5.57.1",
     "typescript": "^6.0.3",