The body is lean and assumes Claude's competence — it never explains what a worktree or submodule is, and every line carries an executable instruction or a deliberate caveat, matching the 'lean and efficient; every token earns its place' anchor.

Guidance is concrete and copy-paste ready, e.g. 'git worktree add -b <branch> <worktree-path> [<base-ref>]' and 'git submodule update --init --depth 1 .source' with specific flags, satisfying the 'fully executable code/commands' anchor.

A clear six-step sequence includes preflight validation checkpoints ('git status --porcelain' warn-if-dirty, abort if target path exists) and an explicit error-recovery fallback ('warn and continue in OSS mode') for the fragile enterprise submodule step.

SKILL.md acts as an overview with clearly signaled one-level-deep references ('read nv-worktree-commands', 'read nv-worktree-cleanup', 'read enterprise-submodule') and a dedicated 'Do not' section, with no nested reference chains; no bundle files exist in the skill directory to verify against.

The description enumerates multiple concrete actions — 'Create a sibling git worktree and a new branch', 'copy local .env* files', 'initialize the enterprise submodule', 'wire enterprise symlinks', and 'move the agent into the worktree' — matching the 'lists multiple specific concrete actions' anchor rather than the domain-only level 2.

It states both what the skill does (the full action list) and when to use it via an explicit 'Use when the user asks for a worktree, parallel branch checkout, or /worktree with a branch name' trigger clause.

Natural user-facing terms are present ('worktree', 'parallel branch checkout', '/worktree with a branch name'), which are exactly what a user would say when needing this skill; not just internal jargon.

The niche is narrow and specific (git worktree creation paired with enterprise submodule wiring), with distinct triggers unlikely to fire for unrelated skills.