format: apply repo prettier (3.8.1) to the folded skills tree

963 markdown files reformatted with the repository's pinned prettier so
pnpm format:check covers the folded tree like every other repo file.

The formatter's embedded-language pass also normalized code fences
(TS semicolons, closed HTML tags in examples, lowercased CSS hex colors,
one renumbered list that skipped an index). Alphanumeric token deltas vs
the fold commit were audited file-by-file; all are formatter-equivalent
markup normalizations plus the four sanitized skills.

packages/mosaic/framework/skills/vueuse-functions/references/watchArray.md

@@ -11,20 +11,20 @@ Watch for an array with additions and removals.
 Similar to `watch`, but provides the added and removed elements to the callback function. Pass `{ deep: true }` if the list is updated in place with `push`, `splice`, etc.
 
 ```ts
-import { watchArray } from '@vueuse/core'
+import { watchArray } from '@vueuse/core';
 
-const list = ref([1, 2, 3])
+const list = ref([1, 2, 3]);
 
 watchArray(list, (newList, oldList, added, removed) => {
-  console.log(newList) // [1, 2, 3, 4]
-  console.log(oldList) // [1, 2, 3]
-  console.log(added) // [4]
-  console.log(removed) // []
-})
+  console.log(newList); // [1, 2, 3, 4]
+  console.log(oldList); // [1, 2, 3]
+  console.log(added); // [4]
+  console.log(removed); // []
+});
 
 onMounted(() => {
-  list.value = [...list.value, 4]
-})
+  list.value = [...list.value, 4];
+});
 ```
 
 ## Type Declarations
@@ -36,18 +36,15 @@ export declare type WatchArrayCallback<V = any, OV = any> = (
   added: V,
   removed: OV,
   onCleanup: (cleanupFn: () => void) => void,
-) => any
+) => any;
 /**
  * Watch for an array with additions and removals.
  *
  * @see https://vueuse.org/watchArray
  */
-export declare function watchArray<
-  T,
-  Immediate extends Readonly<boolean> = false,
->(
+export declare function watchArray<T, Immediate extends Readonly<boolean> = false>(
   source: WatchSource<T[]> | T[],
   cb: WatchArrayCallback<T[], Immediate extends true ? T[] | undefined : T[]>,
   options?: WatchOptions<Immediate>,
-): WatchHandle
+): WatchHandle;
 ```