robots plugin, setup shiki

package.json

@@ -19,6 +19,7 @@
     "@tailwindcss/vite": "^4.1.11",
     "astro": "^5.12.8",
     "astro-icon": "^1.1.5",
+    "astro-robots-txt": "^1.0.0",
     "astro-seo-schema": "^5.1.0",
     "get-audio-duration": "^4.0.1",
     "schema-dts": "^1.1.5",
@@ -26,6 +27,7 @@
   },
   "devDependencies": {
     "@cspell/dict-en-au": "^1.1.4",
+    "@shikijs/transformers": "^3.9.2",
     "@types/howler": "^2.2.12",
     "@typescript-eslint/eslint-plugin": "^8.38.0",
     "@typescript-eslint/parser": "^8.38.0",