feature-state
Compact and consolidate a feature's `overview.md` so it stays small, current, and free of duplicates or contradictions. Use this whenever the user says "compact this feature", "the overview is getting noisy", "re-baseline the feature", "trim the changes index", "consolidate decisions", "feature-state", or whenever `overview.md` has drifted past its 5k-char cap or `Recent Changes` has more than 10 entries. On-demand only - other skills may prompt to invoke it but must not call it automatically. Does NOT write dated snapshots; the dated `snapshots/*.md` artifact is deprecated and read-only.