Conciseness

The four-stage contract and the pointer to references/install-flow-reference.md are repeated roughly four times (Overview ¶1, ¶2, the Composes list, and References), the 31-second engagement requirement and the apple-touch-icon rationale are each explained twice, and the ~60-line inline gate spec duplicates generic recipes already provided in references/install-flow-tests.md. Not 4 because the redundancy is more than minor trimming; not 2 because there is no padding that explains concepts Claude already knows — the excess is repetition, not tutorial prose.

Actionability

Steps 1–7 give concrete bash inventory commands and complete, executable Playwright specs. Not 5 because Step 3's alternative ('or use a Playwright init script that hooks the event') and Step 4's __triggerInstall fixture are described rather than shown, and the second prompt() test elides '// ... engagement + prompt as above ...', so those cells are not copy-paste ready.

Workflow Clarity

Seven clearly sequenced steps, a Step 1 facts-to-steps table, a worked example with expected cell counts and runtime, and a CI coverage gate ('CI gates on every matrix cell having a passing spec'). Not 5 because there is no explicit run-and-verify or fix-and-retry step inside the workflow itself — validation is left to CI outside the emitted procedure.

Progressive Disclosure

The body is a clear overview-plus-workflow that points to three real, one-level-deep bundle files, each cited with what it contains and when to consult it: the contract (references/install-flow-reference.md), the generic standalone recipes (references/install-flow-tests.md), and the full coverage matrix (references/install-suite.md). Verified against the actual bundle structure; the references nest no further.

Specificity

Lists multiple concrete actions — 'emitting one test per gate cell', 'the deferred-prompt → prompt() → userChoice chain', 'the iOS Safari manual-metadata branch', 'Output: a Playwright spec with per-stage cells plus a coverage matrix' — with comprehensive coverage of the skill's outputs. Not 4 because the action list covers every stage of the skill's output rather than having minor gaps.

Completeness

Explicitly answers both: what — 'Output: a Playwright spec with per-stage cells plus a coverage matrix' — and when — 'Use when a PWA's manifest, icons, or install handler change, when install conversion drops at an unknown stage, or when triaging a flaky install assertion'. Both are concrete and trigger-phrased, matching the top anchor exactly.

Trigger Term Quality

Includes natural terms users would say — 'PWA', 'manifest', 'icons', 'install handler change', 'install conversion drops', 'flaky install assertion', 'Add-to-Home-Screen' — but they sit inside dense technical chains ('installability gate fields', 'deferred-prompt → prompt() → userChoice chain') and common phrasings like 'installable', 'install prompt not showing', or 'web app manifest' are absent. Not 5 because synonym/variation coverage is incomplete; not 3 because the natural terms present are the ones a user with this problem would actually say.

Distinctiveness Conflict Risk

Clear niche (PWA install-flow test generation) with distinct triggers (manifest/icon/handler changes, install conversion, flaky install assertions) that don't overlap the sibling skills' surfaces (service-worker lifecycle, offline fallback). Not 4 because no meaningful overlap risk with closely related skills is present.