Conciseness

Lean body with no padding or explanation of concepts Claude already knows; rules, steps, and the output contract each earn their place and assume competence.

Actionability

Every step has copy-paste-ready commands (list, check with 1/1,3/A variants, cleanup-candidates, git worktree remove, rm -rf) covering the common selection cases, plus concrete reply-format prompts for the user.

Workflow Clarity

Five clearly sequenced steps with explicit validation checkpoints — fetch origin/x before check, user confirms before any deletion, sandbox-approval rerun loops, and a hard guardrail against concluding from merge commits alone.

Progressive Disclosure

Bulk implementation is correctly externalized to a single one-level script referenced consistently; body sections are well organized. Slightly below 5 because the result-vocabulary glossary and output contract are inline rather than in a separate reference, though this is reasonable for an ~80-line file.

Specificity

Names the domain plus multiple concrete actions — 'audit local git worktrees against origin/x', 'choose by number or A', and decide cleanup for 'stale worktree directories, already-merged worktrees, or no-delta worktrees' — giving comprehensive coverage of what the skill does.

Completeness

Opens with an explicit 'Use when...' clause stating both what the skill does and when to trigger it, with concrete trigger phrases — matching the anchor for clearly answering both what and when.

Trigger Term Quality

Includes natural triggers a user would say ('worktree clean', 'worktree 合并到 x', '检测哪些 worktree 已进 x') but is missing a few common variants such as 'prune worktrees' or 'remove worktree'.

Distinctiveness Conflict Risk

Targets a specific niche (auditing git worktrees against origin/x by code content) with distinct bilingual triggers and low overlap risk against general git/cleanup skills.