Meeting Coach 0.4.7

• Record push-gate benchmark run for 226a67d
• Record push-gate benchmark run for 226a67d
• Skip push gate when outgoing commits touch only bench/history.jsonl
• Record push-gate benchmark run for 34bb635
• Hybrid coaching engine: deterministic detectors + per-signal LLM judges
• Record push-gate benchmark runs; mark countable signals deterministic in rubric
• Deterministic time-box trigger + rubric-aware prompt stance
• Rubric + simulator fixes to run the 2026-07-14 leadership backtest
• Fall back to a real generic rubric, not an empty one; fix stale rubric path