Lean, instruction-dense body with no concept tutorials or padding about git/worktrees; every section is actionable rule, command, or contract, with only minor reinforcing repetition across Rules and Output Contract.

Provides fully executable commands — 'rtk proxy bash .../1k-worktree-clean.sh list|check|cleanup-candidates', 'rtk git fetch origin x', 'rtk git worktree remove <path>' — with concrete argument examples and clearly marked placeholders.

Clear 5-step sequence (List, Sync, Check, Surface Candidates, Delete) with explicit validation checkpoints: fetch-before-check, sandbox-approval rerun loops, and a hard user-confirmation gate before any destructive deletion.

Well-organized into Rules, Steps, interpretation, and Output Contract, with heavy logic offloaded to a real one-level-deep bundle script (scripts/1k-worktree-clean.sh) referenced by actual path; no nested references or monolithic walls.

Lists multiple concrete actions — 'audit local git worktrees against origin/x', 'choose by number or A', and deciding cleanup eligibility for stale/already-merged/no-delta worktrees — rather than vague domain naming.

Explicitly answers both what (audit worktrees and judge cleanup eligibility) and when, via an explicit 'Use when...' clause plus a 'Triggers on...' list.

Provides natural trigger phrases a user would say, including 'worktree clean', 'worktree 合并到 x', and '检测哪些 worktree 已进 x', with bilingual coverage and no jargon-only terms.

Targets a clear niche (worktree cleanup auditing against origin/x) with distinct triggers, making overlap with general git skills unlikely.