chore: add lint rules for ordered lists in 操作 section and no HTML comments

- Enforce ordered lists (1. 2. 3.) in ## 操作 sections
- Forbid HTML comments in recipe files (template exempted)
- Convert all existing dishes to comply with new rules
- Fix vague measurements (少许 → 2段葱段) in 南派红烧肉
- Fix markdownlint MD032 (blanks around lists) across all files

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

dishes/staple/猪油拌饭.md

@@ -30,11 +30,11 @@
 
 ## 操作
 
-- 碗底铺猪油
-- 加入米饭
-- 淋上酱油与蚝油
-- 撒上葱花和猪油渣
-- 搅拌均匀
+1. 碗底铺猪油
+2. 加入米饭
+3. 淋上酱油与蚝油
+4. 撒上葱花和猪油渣
+5. 搅拌均匀
 
 ## 附加内容