* docs(zh-CN): translate ecc-guide and parallel-execution-optimizer skills
Adds Simplified Chinese translations for two untranslated skills,
following the existing docs/zh-CN/skills/ conventions (frontmatter
name/origin preserved, code blocks and output templates kept in
English, prose fully translated).
Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
* docs(zh-CN): polish two phrasings per review
Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
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Co-authored-by: Claude Fable 5 <noreply@anthropic.com>