Conciseness

The body is code-dense with virtually no explanation of concepts Claude already knows, but it is long (~400 lines) and inlines Robrix-specific implementation detail (the full SelectedRoom impl with upgrade_invite_to_joined and PartialEq, LiveIdSerde conversion impls) that could be trimmed or moved to reference files. Not score 5 because not every token earns its place; not score 3 because there is no padded prose and the bulk is genuinely non-obvious pattern code.

Actionability

Concrete, mostly copy-paste-ready Rust (save_app_state, load_app_state, persistent_state_dir, thread_local! guards) with real error handling and file names. Not score 5 because several referenced types and helpers are undefined (WindowGeomState, RoomNameId, CachedData, and the inconsistent get_current_user_id/current_user_id), so examples are not fully self-contained.

Workflow Clarity

Sections follow a coherent arc (state structure → Scope propagation → persistence → startup/shutdown lifecycle → best practices), and the load path embeds checkpoints (NotFound fallback, deserialize-failure backup, default-state recovery). Not score 5 because the lifecycle sequence is shown only through code rather than explicit ordered steps, and the _base/ pattern table is presented without guidance on when to consult it.

Progressive Disclosure

Section structure is good and the "Reference Files" section clearly signals one-level-deep references, but none of the referenced files (references/persistence-patterns.md, references/state-structures.md, references/moly-state-patterns.md) exist in the bundle, and the referenced _base/ directory is likewise absent. Additionally, substantial pattern content that the skill's own structure suggests belongs in references is fully inlined. Not score 4 because the references are broken rather than having only minor organization gaps; not score 2 because the in-body structure and signaling are clear.

Specificity

The only capability statement is "Use for Robius state management patterns", which names the domain but describes no concrete actions — the keyword list ("save state, load state", "persistence") is trigger material, not stated capabilities. It is not score 1 because a specific domain is named, and not score 3 because no concrete capability actions are described.

Completeness

Both parts are present: a "what" ("Use for Robius state management patterns") and an explicit "when" ("Triggers on: AppState, persistence, theme switch..."). Not score 3 because the trigger guidance is explicit rather than missing; not score 5 because the "what" is a bare domain mention without concrete capability verbs.

Trigger Term Quality

Good coverage of natural terms ("persistence", "theme switch", "save state", "load state") plus cross-language synonyms (状态管理, 状态持久化, 主题切换) and technical identifiers ("Scope::with_data", "serde"). Not score 5 because naturally occurring names like "Makepad", "Robrix", and "Moly" are missing.

Distinctiveness Conflict Risk

"Robius state management" with distinct triggers like "Scope::with_data" and "AppState" carves a clear niche with minimal conflict risk. Not score 5 because generic terms ("persistence", "serde", "save state") could overlap with general Rust persistence or state-management skills.