Conciseness

Every sentence carries framework-specific behavior Claude would not know ("TableController selects all registered state by default and requests host updates when selected state changes"), with no padding or explanation of known concepts — matching anchor 5. Score 4 would require over-explanation that could be trimmed, and none is present.

Actionability

The controlled-property example is a complete, copy-paste-ready Lit component (decorators, controller construction, updater resolution via "typeof next === 'function' ? next(this.pagination) : next", template usage), and concrete APIs are named throughout (table.subscribe, table.atoms, table.store) — matching anchor 5. It is not 4 because no key executable detail is missing.

Workflow Clarity

A single-purpose usage skill with unambiguous action: explicit sequencing opens the body ("Load `intent load @tanstack/table-core#table-state` first"), and each reactive pattern has when-to-use guidance ("Use `table.subscribe(source, selector, renderCallback)` for a template region that should update independently"). Per the simple-skill guidance this matches 5; no destructive or batch operations exist to require validation checkpoints.

Progressive Disclosure

A ~60-line overview with the bulk advanced material (subscription example, shared atoms, lifecycle) correctly placed in references/reactivity.md — verified to exist and be substantive — and clearly signaled one-level-deep references with topic routing in "Read for the task" ("For advanced reactive boundaries... read [reactivity](references/reactivity.md)"). This matches anchor 5; score 4 would require organization gaps that are not present.

Specificity

"Read and control Table v9 state in lit" names the domain plus concrete actions, and "tracked reads, subscriptions, controlled slices" lists several specific capabilities — matching anchor 4. It is not 3 because coverage goes beyond 1-2 actions, and not 5 because "framework-specific reactive boundaries" is abstract phrasing and other concrete actions (e.g., shared atoms) are absent.

Completeness

Both parts are explicit and concrete: the what is "Read and control Table v9 state in lit" and the when is "Use for tracked reads, subscriptions, controlled slices, and framework-specific reactive boundaries", in third person — matching anchor 5. Score 4 would require the when to be less explicit or specific, which it is not.

Trigger Term Quality

Natural terms users would say are present: "Table v9", "lit", "state", "subscriptions", "controlled slices" — good coverage per anchor 4. It falls short of anchor 5 because the most natural trigger phrasing is missing: "TanStack", "lit-table", "@tanstack/lit-table".

Distinctiveness Conflict Risk

A clear niche (Table v9 state in the Lit framework) with distinct triggers; the "in lit" scoping and framework-specific wording separate it from the core table-state skill and other framework variants, matching anchor 5's minimal conflict risk.