Split meta skill CLI and review gates

Merge the beta-ready Yao Meta Skill architecture, report, evidence gate, and release-boundary updates.\n\nRelease boundary: beta/public testing is allowed; formal world-class, fully reviewed, or superiority claims remain blocked until the pending evidence gates are accepted.

reports/python_compatibility.md

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+# Python Compatibility
+
+Generated at: `2026-06-17`
+
+## Summary
+
+- decision: `pass`
+- target python: `3.11`
+- files scanned: `232`
+- issues: `0`
+- syntax errors: `0`
+- f-string 3.11 violations: `0`
+
+This report catches Python syntax and compatibility hazards that can pass on a newer local interpreter but fail in the supported CI/runtime interpreter.
+
+## Issues
+
+| Path | Line | Rule | Message |
+| --- | ---: | --- | --- |
+| `none` | 0 | `none` | none |