Conciseness

The body is lean and assumes Claude's git competence throughout — no space is spent explaining what worktrees or merge-base are ('Four harnesses (warp, codex, opencode, conductor) mint worktrees here and nothing reaps them', 'lockfile-only churn is throwaway'). Not a 5 only because the file ends with two stray wrapper tags ('</content>', '</invoke>' at lines 75-76) that are pure noise and could be trimmed.

Actionability

Fully executable guidance: a copy-paste audit pipeline ('git worktree list --porcelain | awk ... | while read b; do ... git cherry "$base" "$b" ... git merge-base --is-ancestor "$b" "$base"'), and a decision table with exact commands ('git worktree remove <path>; git branch -d/-D <branch>', 'git -C <path> switch -c holding/<name>'). Not below 5: placeholders are appropriate parameterization, not pseudocode.

Workflow Clarity

Destructive/batch skill with explicit validation checkpoints and feedback loops: fetch-first, self-run audit ('Never reap on a self-reported "it's merged"; run the audit yourself'), an approval gate before any destructive command, and a Final Checks section ('Re-run the audit; confirm reaped paths are gone', 'git worktree prune', 'Confirm any anchored holding/* branches still hold their edits'). This clears the destructive-operations cap comfortably.

Progressive Disclosure

A single-file skill (no references/, scripts/, or assets/ directories exist, and none are needed at this size) with well-organized, navigable sections (reap signal, audit procedure, decision table, gotchas, invariant, final checks) and one clearly-signaled Related Skills pointer. Content is appropriately placed; nothing is inlined that belongs in a separate file.

Specificity

Several concrete actions are named — 'reap merged Git worktrees and branches', 'cleaning git worktree list', 'removing orphaned or detached worktrees', 'deciding whether one is safe to delete'. Not 5: coverage is strong but misses some adjacent concrete operations (e.g., pruning stale registrations) and 'reap' leans on context for meaning; not 3: more than 1-2 specific actions are listed with clear scope.

Completeness

Explicitly answers both questions: what ('Safely reap merged Git worktrees and branches across Epicenter harnesses') and when ('Use when cleaning git worktree list, removing orphaned or detached worktrees, or deciding whether one is safe to delete'), with a concrete negative boundary ('not when creating branches or commits'). Matches the top anchor exactly.

Trigger Term Quality

Good natural-keyword coverage: 'git worktree list', 'orphaned', 'detached worktrees', 'safe to delete', plus branch/merge terms. Not 5: 'reap' is the skill's own coinage rather than a phrase users would naturally say, and common synonyms like 'clean up worktrees', 'delete worktrees', or 'prune' are absent; not 3: multiple natural trigger phrases users would actually utter are present.

Distinctiveness Conflict Risk

Clear niche (merged-worktree/branch cleanup) with distinct triggers and an explicit exclusion of the adjacent task ('not when creating branches or commits'), which cleanly separates it from general git/commit/PR skills. Minimal conflict risk.