Conciseness

The body is dense, imperative, and free of concept explanations Claude already knows; every phase is a rule plus a read instruction. Not a 5: the 'stop if a reference cannot be read' rule is restated ~5 times and the Return-to-Caller blocked-result rules appear twice (Phase 0 and the closing section), so some repetition could be trimmed; not a 3: verbosity is noticeably above the midpoint — the padding is minor, not 'some unnecessary explanation'.

Actionability

For an instruction-only skill the guidance is concrete and executable: exact read points per phase, an exact prohibition ('A bare `git commit` can absorb the user's pre-existing index, so it is forbidden'), exact return fields (`status: blocked`, `plan_path`, `changed_state`, `blockers`, `recovery_path`, `standalone_shipping_skipped: true`), and a hard completion gate. Not a 5: several steps are pointers ('bounded plan intake', 'task derivation') whose mechanics live entirely in unread references, leaving minor gaps in what to do inline; not a 3: nothing is pseudocode or vague.

Workflow Clarity

Phases 0→1→2→3-4 are clearly sequenced with explicit validation checkpoints and error recovery: stop-before-action on missing references, the code-review completion gate with authorized skip states, verification evidence recorded in the Done criteria, and a preserve-state blocked-result path when the final read fails. Not a 4: validation is explicit at every gate, not 'mostly present'; the feedback loops (fail → preserve → blocked with named blockers) are exactly the top-anchor behavior.

Progressive Disclosure

The SKILL.md is an overview that cleanly splits detail into 8 existing, well-signaled reference files (all present in references/), each bound to the phase that governs it, plus a scripts/ bundle. Not a 5: the references are not strictly one level deep — reference files point onward to further references (e.g., input-triage → work-intake, shipping-workflow → tracker-defer, execution-engines → cross-model-execution) and to agents/*.md, so navigation is a chain rather than the flat one-level structure the top anchor describes; not a 3: structure and signaling are clearly better than 'could be better organized'.

Specificity

The 'what' is one concrete action — 'Execute a plan or concrete work prompt end-to-end' — plus implementation/local-verification framing, but it does not enumerate several specific actions, matching the '1-2 concrete actions, not comprehensive' anchor. Not a 4: no list of distinct operations (e.g., task derivation, commits, verification) comparable to 'extracts, fills, merges'; not a 2: the action and domain are named concretely, not generic.

Completeness

Explicitly answers both: 'Execute a plan or concrete work prompt end-to-end' (what) and two concrete 'Use when...' clauses covering standalone and orchestrator cases. Not a 4: the 'when' is explicit and specific rather than merely adequate; both what and when are stated with concrete trigger phrases, matching the top anchor.

Trigger Term Quality

Natural trigger phrases are present — 'plan document', 'a spec path', 'a clear build request', 'outer orchestrator' — plus a disambiguating pointer ('use ce-debug for open-ended bugs'). Not a 5: no synonyms or artifact extensions (e.g., 'implementation request', file forms of plans), so a few natural terms are missing; not a 3: coverage is good and includes orchestrator-facing as well as user-facing phrasing.

Distinctiveness Conflict Risk

Distinct triggers (plan document, spec path, orchestrator handoff) and an explicit negative route ('use ce-debug for open-ended bugs') carve a niche. Not a 5: 'Execute a plan or concrete work prompt end-to-end' is broad enough to overlap generic implementation/build skills; not a 3: the ce-debug routing and orchestrator framing meaningfully separate it from siblings.