Conciseness

The body is lean in the ways that matter — it explains no basic concepts (no 'what is a git worktree' filler) and every section delivers non-obvious operational knowledge like the '.gitignore with node_modules/ (trailing slash) matches a directory, not a symlink' trap and the 'git index lives in the main repo's .git/worktrees/<name>/, which is outside the worktree sandbox' EROFS explanation. A few long parenthetical passages (e.g., the multi-clause sentences in Primitive 4 and the alternatives section) could be tightened without losing content, matching anchor 4 rather than the every-token-earns-its-place of 5.

Actionability

Guidance is fully executable and copy-paste ready: the complete 'quintet worktrees' CLI block with status/merge/abort subcommands, concrete tmux commands ('tmux new-window -t "=$sess" -n "wt1-codex" -c "$WT1" "codex exec -C '$WT1' -s workspace-write ... 2>&1 | tee '$WT1/.agent.log'"'), 'git worktree add -b <branch> <dir> <base>' setup, and the brief-file pattern ('cp brief.txt "<dir>/.brief.txt"'). A per-CLI invocation table with exact headless forms and auto-approve flags covers all common cases, matching anchor 5.

Workflow Clarity

The sequence is explicit (dispatch with numbered steps 1-3 in the first-class CLI section, then verify-and-merge) and validation is emphatic and itemized: 'Never trust a worker's exit 0' with a 4-point in-order verification checklist (commit scope, leak scan, build green, 'grep the build output for secret values'). Feedback loops are present throughout — the 'abort and clean up in case of failure' command, 'amend out any leak' recovery, and the failure-mode quick-reference table mapping symptoms to fixes — matching anchor 5.

Progressive Disclosure

Structure is good: a clear overview ('The core model' diagram, 'When to use this vs. the alternatives'), well-labeled sections (Primitive 1-8), and navigable tables. But the ~156-line body keeps everything inline with no bundle files — the per-CLI headless invocation table and the tmux execution recipe are reference-style material that could be split into a references/ file, which is the minor organization gap that holds this at anchor 4 rather than a 5 with appropriately split content.

Specificity

The description lists multiple concrete actions ('Orchestrate multiple coding-agent CLIs (codex/gemini/copilot/claude) headlessly', 'each in its own git worktree, driven non-interactively', 'then merged') which matches the anchor-5 example of comprehensive concrete actions. However, the second-person phrasing 'when you need worktree isolation so agents don't collide' violates the third-person-voice rule, incurring the mandatory 1-point reduction, so it is not a 5.

Completeness

It explicitly answers both what ('Orchestrate multiple coding-agent CLIs... headlessly... then merged') and when ('Use when fanning real implementation or review work out to several model CLIs in parallel... when you need worktree isolation... or when distributing token cost onto external providers'), with concrete trigger phrases — the exact anchor-5 pattern of the good example.

Trigger Term Quality

Trigger coverage is comprehensive with natural phrases and synonyms: 'run codex/gemini/copilot in parallel', 'headless multi-agent', 'git worktree per agent', 'non-interactive CLI agents', 'offload work to other model CLIs', 'parallel build with isolated worktrees'. A user needing this skill would plausibly say several of these verbatim, matching the anchor-5 example's breadth (e.g., 'PDF files, PDFs, forms, .pdf').

Distinctiveness Conflict Risk

It carves a clear niche (headless, worktree-isolated, merge-oriented multi-CLI orchestration) and explicitly disambiguates sibling skills: 'For interactive tmux worker teams use quintet-team-runtime instead; for one-shot opinions use quintet-fleet-dispatch.' Triggers name specific tools and the worktree/headless mechanism, so wrong-skill triggering risk is minimal.