Conciseness

The body is lean bullet-point rules with no padding or explanation of concepts Claude already knows, so mostly anchor-5 material. It drops to 4 because of wasted tokens: the empty '## Priority: P0 (CRITICAL)' heading (a heading with no content beneath it) and the incoherent trailing 'Canonical response anchors ... hardcode' stub earn no value.

Actionability

The rules are concrete and executable at the API level — 'Always use viewModelScope (VM) or lifecycleScope', 'INJECT Dispatchers (DispatcherProvider)', 'Use collectAsStateWithLifecycle() (Compose) or repeatOnLifecycle (Views)' — matching 'mostly executable guidance with minor gaps'. Not 5 because there is no inline code example and key mechanics like exception handling only exist in the referenced file, which the body never mentions.

Workflow Clarity

This is a standards skill rather than a multi-step procedure, and the single action (apply these rules when writing coroutine code) is reasonably clear, but the structure is fragmented: a '## Priority: P0 (CRITICAL)' heading with no content, and a trailing 'Canonical response anchors' section that is incoherent ('Additional task-grounded exact anchors: hardcode'). This matches 'sequence/structure present but with gaps or incoherent elements' rather than a cleanly organized body.

Progressive Disclosure

The bundle structure is sound: the body is short and points one level deep to references/implementation.md, which exists and contains the dispatcher-injection code. It is not 5 because the link label 'Dispatcher Pattern' does not signal that the file also contains an Exception Handling section, so content in the bundle is undiscoverable from the overview.

Specificity

The description names the domain and three concrete actions — 'Write correct coroutine scopes, lifecycle collection, and dispatcher injection in Android production code' — which matches the 'several specific actions; minor gaps in coverage' anchor. It falls short of 5 because it does not cover related concrete capabilities like exception handling or parallel decomposition; it is well above 3's '1-2 concrete actions' level.

Completeness

It explicitly answers both questions with concrete trigger phrases: what — 'Write correct coroutine scopes, lifecycle collection, and dispatcher injection'; when — 'Use for suspend functions, coroutine scopes, and dispatcher mechanics', matching the anchor-5 example pattern exactly. Not 4, because the 'when' clause is explicit and specific rather than generic.

Trigger Term Quality

'Use for suspend functions, coroutine scopes, and dispatcher mechanics' includes the natural phrases users would say when needing this skill, matching 'good keyword coverage; a few natural terms missing'. Not 5 because common variations like Flow, StateFlow, viewModelScope, or launch are absent from the description itself (they only appear in the metadata triggers block).

Distinctiveness Conflict Risk

It has a clear niche (Android coroutine mechanics) and actively reduces overlap by deferring adjacent topics: 'defer ViewModel StateFlow/LiveData architecture, Fragment lifecycle recipes, persistence/notifications, and unit-test recipes to their specific skills'. This explicit boundary carving goes beyond anchor 4's 'minor overlap risk' to a distinct trigger profile.