Conciseness

The body is lean and dense with placement-relevant signal only: a 5-question decision procedure, a 10-row placement table, worked examples, an exception list, and a common-mistakes list. It assumes Claude's competence with Svelte/TypeScript and explains no general concepts, matching anchor 5's 'every token earns its place'.

Actionability

Every rule is grounded in concrete file paths and named artifacts (`src/api/messageSearch.ts`, `$lib/state/server/serverUi.ts`, boundary events like `onRoomAccessLost`, `DirectMessageLabels` in `timeline/users.ts`), with explicit exceptions and enumerated anti-patterns. This is an instruction-only skill whose guidance is fully actionable, which the scoring notes say should not be penalized for lacking code.

Workflow Clarity

The Decision Procedure is a numbered question sequence with an explicit stop condition ('Ask these questions in sequence. Stop at the first "yes".') and a tiebreaker default (question 5). The task is a single placement decision with no destructive or batch operations, so no validation checkpoint is required and the procedure is unambiguous.

Progressive Disclosure

The single file is well organized with clear sections, a table, and an easy-to-navigate structure, and all decision content appropriately lives inline. However, the Related Rules links point outside the skill bundle (`../../../packages/chatto-client/AGENTS.md`, ADR-111/112) with deep relative paths that do not resolve in this environment, leaving them unverifiable — a minor gap matching anchor 4's 'references mostly clear; minor organization gaps'.

Specificity

The description names a concrete decision action ('Decide whether Chatto client code goes into `@chatto/client` (packages/chatto-client) or the bundled frontend (apps/frontend)') with two specific package targets and enumerated artifact types ('a request, store, state, helper, or protocol rule'). It sits between anchor 3 (1-2 concrete actions) and anchor 4 (several specific actions), noticeably above the midpoint because the destinations and artifact types are concrete rather than generic.

Completeness

Both questions are explicitly answered: the 'what' ('Decide whether Chatto client code goes into `@chatto/client` ... or the bundled frontend') and the 'when' ('Use before you add a request, store, state, helper, or protocol rule to either, or when you move code between them') with concrete trigger phrases, matching anchor 5 exactly.

Trigger Term Quality

Natural developer phrasings are present: 'add a request, store, state, helper, or protocol rule', 'move code between them', 'client code'. A few natural synonyms (e.g., 'component', 'API call') are missing, matching anchor 4's 'good keyword coverage; a few natural terms missing' rather than the comprehensive synonym coverage of anchor 5.

Distinctiveness Conflict Risk

The description carves out a clear niche (Chatto client-vs-frontend package placement) with distinct, project-specific triggers; it would not plausibly fire for any other skill, matching anchor 5's 'clear niche with distinct triggers; minimal conflict risk'.