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/code-review-excellence/reference/rust.md

@@ -764,11 +764,13 @@ fn create_handler() -> impl Handler {
 ### 编译器不能捕获的问题
 
 **业务逻辑正确性**
+
 - [ ] 边界条件处理正确
 - [ ] 状态机转换完整
 - [ ] 并发场景下的竞态条件
 
 **API 设计**
+
 - [ ] 公共 API 难以误用
 - [ ] 类型签名清晰表达意图
 - [ ] 错误类型粒度合适