feat: Add frontmatter editor and enhance page management with YAML support; update dependencies and improve UI interactions

package.json

@@ -23,6 +23,7 @@
         "@internationalized/date": "^3.8.1",
         "@lucide/svelte": "^0.488.0",
         "@types/color": "^4.2.0",
+        "@types/js-yaml": "^4.0.9",
         "@types/node": "^22.15.23",
         "@types/three": "^0.170.0",
         "@typescript-eslint/eslint-plugin": "^8.33.0",
@@ -76,6 +77,7 @@
         "flowbite": "^2.5.2",
         "flowbite-svelte": "^0.47.4",
         "flowbite-svelte-icons": "^2.2.0",
+        "js-yaml": "^4.1.0",
         "qs": "^6.14.0",
         "sharp": "^0.33.5",
         "svelte-awesome": "^3.3.5",