Conciseness

The body never explains concepts Claude already knows (no 'what is a worktree' preamble) and every line is non-obvious operational knowledge — the wt contract, harness detection order ("omp sets both OMPCODE=1 and CLAUDECODE=1"), and subagent cwd inheritance — delivered in dense tables and terse bullets. Matches the 5 anchor: every token earns its place.

Actionability

Guidance is copy-paste ready: the capture one-liner "wt_path=$(wt switch "$branch" ${allow_home:+--allow-home})", the executable harness-detection bash block, an exact subcommand table with flags and exit codes, and per-harness lines to print. This matches the 5 anchor's fully executable, common-cases-covered standard; not 4 since there are no minor gaps in the commands given.

Workflow Clarity

The Session Rebase Protocol is explicitly ordered ("Three parts, in this order", "order matters") with a binding checklist for shell/file/subagent calls, and the destructive wt remove has full validation: three documented refusal cases, a "git -C <path> status --porcelain=v1" report, ask-before---force, and never the main worktree — feedback loops present, so it matches the 5 anchor and avoids the destructive-operation cap of 3.

Progressive Disclosure

No bundle files exist, and the single file is cleanly sectioned (Contract, Actions, Protocol, Deleting, Never, Integration) with nothing inlined that belongs in a separate file; the one external pointer — "Layout and constraint questions belong to the `using-git-worktrees` skill" — is clearly signaled. Content is appropriately self-contained with easy navigation, matching the 5 anchor's intent.

Specificity

"Create, switch to, or delete a git worktree under ~/.worktrees/<path-key>/<branch>, then rebase the agent session onto that directory" lists four concrete actions plus a concrete path convention, matching the comprehensive-coverage anchor; the unlisted wt subcommands (path/resolve/list/verify) are internal plumbing rather than a capability gap, so the 4 anchor's 'minor gaps' does not fit.

Completeness

The description explicitly answers both 'what' (create/switch/delete a worktree at a stated path, then rebase the session) and 'when' ("Use when asked to make, enter, or remove a worktree..., when work needs an isolated checkout, or when invoked as /git:worktree"), exactly matching the 5 anchor; the 'when' clause is fully explicit, so 4's 'could be more explicit' does not apply.

Trigger Term Quality

"make, enter, or remove a worktree", "isolated checkout", and "/git:worktree" give comprehensive natural-term coverage with action synonyms (make≈create, enter≈switch to, remove≈delete) and a concept-level trigger, matching the 5 anchor; no natural phrasing a user would say for this need is missing.

Distinctiveness Conflict Risk

"git worktree under ~/.worktrees/<path-key>/<branch>" plus session rebasing is a clear niche with distinct, worktree-specific triggers, giving minimal conflict risk with other git skills; it matches the 5 anchor rather than 4's 'minor overlap risk with closely related skills'.