Conciseness

The body is two lean lines — 'Load and follow the shared skill at `~/.agents/skills/using-git-worktrees/SKILL.md`' plus a generator comment — with zero padding and no explanation of concepts Claude already knows. Every token earns its place.

Actionability

'Load and follow the shared skill at `~/.agents/skills/using-git-worktrees/SKILL.md`' is a concrete, executable directive with an exact path, so an agent knows precisely what to do. Not 5 because it covers only the single redirect case with no fallback guidance if the target file is absent; not 3 because the instruction as written is complete and specific rather than missing key details.

Workflow Clarity

A single unambiguous action (load and follow the shared skill), which the simple-skill exception says can score 5. No destructive or batch operations are described in the body, so the validation cap does not apply.

Progressive Disclosure

The bundle contains no reference/asset/script files, and the sole referenced path is an absolute home-directory path ('~/.agents/skills/using-git-worktrees/SKILL.md') that does not resolve in this environment, so navigation cannot be verified against a real file. The reference is clearly signaled but points entirely outside the skill's own structure with an empty bundle — structure exists but organization is questionable, fitting anchor 3 rather than 4's 'only minor organization gaps'.

Specificity

Names the domain plus several concrete items — 'the ~/.worktrees/<path-key>/<branch> worktree convention, the dotfiles-repo opt-in, and what a dotfiles worktree cannot validate' — including a concrete path pattern. Not 5 because coverage is not comprehensive (operations like cleanup/switching are only implicitly delegated); not 3 because it lists three-plus specific items rather than 1-2.

Completeness

Both parts are explicit: the 'what' ('Explains the ~/.worktrees/<path-key>/<branch> worktree convention, the dotfiles-repo opt-in, and what a dotfiles worktree cannot validate') and the 'when' ('Use to understand or explain worktree layout and its constraints'). Not 5 because the trigger phrasing is abstract ('understand or explain') rather than concrete user-mention triggers; not 3 because the 'when' is explicitly stated, not missing or weakly implied.

Trigger Term Quality

Natural terms are present ('worktree convention', 'worktree layout', 'constraints', 'git-worktree skill'), which users would plausibly say when needing this skill. Not 5 because common variations like 'parallel branches', 'multiple working trees', or 'git worktree add' are missing; not 3 because coverage goes beyond a couple of generic keywords.

Distinctiveness Conflict Risk

It actively de-conflicts against the closest related skill — 'use the git-worktree skill to actually create, switch to, or delete one' — carving a clear explain-the-convention vs. operate-on-worktrees niche. Minimal conflict risk; this matches the clear-niche anchor better than the minor-overlap anchor at 4.