Conciseness

The body is dense with project-specific facts (state layers, file paths, enum conventions, the ContentView composition tree) and avoids explaining general Swift/SwiftUI knowledge, with every section carrying project rules. Minor trimming is possible — e.g., the full NotchLayout tree and the singleton boilerplate template restate some things inferable from the code — so it sits at anchor 4 rather than the lean anchor 5.

Actionability

Mostly executable guidance: a copy-paste-ready Defaults key snippet, an exact enum/switch wiring recipe ('Add a case to NotchViews enum in enums/generic.swift'), and a 10-item feature checklist with concrete file names. The manager template contains ellipsis placeholders ('func startMonitoring() { ... }') and the conditional-modifier example is illustrative rather than runnable, which keeps it just below anchor 5.

Workflow Clarity

Multi-step processes are clearly sequenced — 'When adding a new top-level view' (4 numbered steps) and 'Checklist for New Features' (10 steps) — and step 8 ('Test both open and closed notch states, and with liquid glass on/off') provides a verification checkpoint. There is no explicit error-recovery/feedback loop around that test step, so it matches anchor 4 ('clear sequence with most checkpoints; minor validation gaps') rather than anchor 5. No destructive/batch operations, so the workflow cap does not apply.

Progressive Disclosure

The body is a genuine overview with a well-signaled one-level-deep reference table ('When to read' column), and all six referenced files (animation-patterns.md, design-conventions.md, music-module.md, widget-system.md, window-and-input.md, xcode-integration.md) exist in references/. The minor gap is the out-of-bundle relative links to ../../../ARCHITECTURE.md and ../../../BUILD.md, which do not resolve within the skill bundle, keeping it at anchor 4 ('minor organization gaps') rather than anchor 5.

Specificity

The description names the domain ('boring.notch macOS Dynamic Island app') and lists several concrete work types ('adding new views, managers, settings, animations, or modifying the notch layout', 'how to add a new module'), which would fit anchor 4, but the second-person phrase 'when you need to understand the codebase structure before making changes' triggers the mandated 1-point specificity penalty, bringing it to anchor 3 territory (domain named with concrete actions, though coverage leans generic — 'any feature, bugfix, or refactor').

Completeness

It explicitly answers both questions: what ('Conventions, architecture, and design patterns for the boring.notch macOS Dynamic Island app') and when ('Use this skill whenever working on any feature, bugfix, or refactor... Also consult this when the user asks about how the project works...'), with concrete trigger phrases matching the anchor-5 example structure.

Trigger Term Quality

Good natural-phrase coverage: 'feature', 'bugfix', 'refactor', 'adding new views', 'settings', 'animations', 'notch layout', 'how the project works', 'add a new module' are things a contributor would actually say. A few natural terms are missing (e.g., 'widget', 'shelf', 'lyrics', 'calendar'), and no synonyms or file names are given, so it falls just short of anchor 5's comprehensive coverage.

Distinctiveness Conflict Risk

The description is anchored to one specific named app ('boring.notch macOS Dynamic Island app'), a clear niche with distinct triggers; virtually no overlap risk with other skills, matching anchor 5.