guard-maturitylisted

# Guard Maturity Hook Maturity Model fitness scoring for the push guards (M2/M3/M4/M5 and any future siblings built on `push_guard_base.py`). Hooks accumulate without measurement: a guard ships, gets some intercepts, and stays forever even if it has stopped catching anything real or has started blocking on a stale rule. This skill is the measurement: real intercept counts feed real tier assignments, and the tier dictates whether a guard gets kept, promoted, or pruned. <!-- vendor-portability: declared. This skill reads push-guard telemetry from the consumer's .agents/telemetry/ and cites .agents/retrospective/2026-05-05-pr-1887-iteration-paradox.md as background. The telemetry directory is a read/append target created on demand; the retrospective is a documentation citation. A vendored install without .agents/ produces an empty report (no guards classified) rather than a silent failure. Issue #2050. --> ## Triggers - `guard maturity report` - `classify push guards` - `hook maturity tiers` - `prune inert guards` ## When to use - **Periodic review** (recommended every 30 days once telemetry is flowing): run the report, prune Inert guards, promote Proficient ones, remove Harmful ones immediately. - **Before adding a new guard**: confirm no existing guard already covers the case at a higher tier. - **Pre-release**: include the report in the release notes so the team can see which guards are paying for themselves. ## What it does 1. Calls `python3 build/scripts/ag