Conciseness

Mostly efficient — no over-explanation of concepts Claude already knows, and pointers are dense — but the ~28-line dot 'Decision Tree' repeats the same symptom→reference mapping already given in the 32-row 'Quick Reference' table, and verbose rows (the iOS 26 'navigationSubtitle' entry, the long Liquid Glass/TextKit scan parentheticals) could be tightened. It is not 4 because the duplication is an entire redundant section rather than minor trim instances.

Actionability

Routing guidance is concrete and executable: every symptom maps to an exact path ("See `skills/debugging.md`"), with concrete fallback logic ("if `command -v <tool>` finds nothing ... use `<plugin-root>/tools/<tool>`") and a sequenced escalation rule ("Try axiom-swiftui FIRST ... Only use axiom-performance if domain fixes don't help"). Not 5 because the actual fix procedures live in the referenced files rather than here, and placeholder resolution ("two levels above this skill's Base directory") needs interpretation.

Workflow Clarity

The diagnosis workflow is clearly sequenced — symptom lookup → reference, conflict-resolution ordering (1. try domain fixes, 2. escalate), and escalation checkpoints like "View update still broken after debugging → `skills/debugging-diag.md`". Not 5 because explicit post-fix validation steps are deferred to the referenced files; not 3 because sequencing and error-recovery escalation are both present.

Progressive Disclosure

Exemplary router structure: the 'Quick Reference' table and 'Non-SwiftUI UI Routes' section point one level deep to clearly signaled `skills/*.md` targets organized by symptom. Not 5 because no bundle files are provided to verify the `skills/*.md` targets and cross-suite references (axiom-uikit, axiom-design, axiom-macos, axiom-swift) actually exist — the nonstandard `skills/` path is unverifiable in the provided bundle, leaving minor navigation risk.

Specificity

"building, fixing, or improving ANY SwiftUI UI" pairs generic verbs with a concrete enumerated scope ("views, navigation, layout, animations, gestures, debugging, iOS 26 features, iPhone Duo, view-level performance, feature architecture"). Several specific areas are named with only minor gaps, but the verbs themselves are broad synonyms rather than distinct concrete actions, which keeps it below the comprehensive anchor 5.

Completeness

The 'when' is explicit and strong ("Use when building, fixing, or improving ANY SwiftUI UI"), but there is no explicit 'what' statement — the skill's capability is only implied by the topic enumeration, not stated as an action the skill performs. It is not 4 because that anchor requires both 'what' and 'when' present, and not 2 because the enumerated scope conveys far more than a bare 'Use when working with documents'.

Trigger Term Quality

Natural terms users would say are well covered ("SwiftUI", "navigation", "layout", "animations", "debugging", "gestures", "architecture"), and niche-but-real triggers like "iPhone Duo" and "iOS 26 features" are present. Common variations such as "Swift files", "state", "previews", or "sheets/popovers" are missing, so coverage stops short of the comprehensive-with-synonyms anchor 5.

Distinctiveness Conflict Risk

"SwiftUI UI" plus distinctive markers ("iPhone Duo", "iOS 26 features") carves a clear niche with distinct triggers. However "view-level performance" and "feature architecture" sit close to sibling performance/architecture skills — the body even needs a dedicated Conflict Resolution section — which is exactly anchor 4's 'minor overlap risk with closely related skills', not the minimal-conflict anchor 5.