🎨 style(md): lint and format all Markdown files

- Update .markdownlint.json: disable MD024 (duplicate headings) and MD025 (multiple h1)
  - MD024: test cases intentionally use duplicate headings for test IDs
  - MD025: function catalog files use multiple h1 for different function groups
- Fix MD040: add language identifiers to fenced code blocks in test/agent/README.md
- Fix MD031: add blank lines around fenced code blocks
- Run prettier to format all Markdown files consistently
- Fix table alignment and spacing issues

All markdownlint errors are now resolved.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

docs/tsl/reference/catalog/datawarehouse/04_predicates.md

@@ -161,6 +161,7 @@
 | 参数位置 | 参数名 | 必填 | 接收类型 | 说明                                         |
 | -------- | ------ | ---- | -------- | -------------------------------------------- |
 | 1        | `arg1` | 是   | 整数     | 按源文档示例顺序传入；示例参数形态为 `46002` |
+
 # 数据仓库金融函数 - 条件判定
 
 文档类型：函数事实页