Open Source Launch v0.1.2

What's changed

• Added a multilingual README quality gate so translated documentation reads naturally while remaining semantically aligned with the canonical README.
• Added Simplified Chinese guidance for native headings, terminology, concise product prose, and stale-version prevention.
• Repository Pulse now generates only the linked activity chart and no generic GitHub Traffic disclaimer paragraph.
• Removed that paragraph from this repository's English and Chinese README.

Verification

• Python 3.10, 3.12, and 3.14 CI passed.
• 10 unit tests passed.
• Strict public-surface and Gitleaks history audit passed with zero errors and zero warnings.