Conciseness

The body is largely lean and code-driven with minimal generic padding; only minor repetition (e.g. 'Angular-backed table atom reads are signal reads' restating the mental model) keeps it just below fully efficient.

Actionability

It provides copy-paste-ready TypeScript across Setup, Core Patterns, Initialize/Update/Reset, and Common Mistakes, with concrete wrong/correct pairs covering the common cases of external atoms, controlled signals, and updater handling.

Workflow Clarity

The content follows a logical progression (mental model → setup → patterns → ownership → init/reset → mistakes → API discovery); this is guidance rather than a destructive/batch workflow, so the missing validation-feedback loop is not a cap, though no explicit checkpoints are present.

Progressive Disclosure

The body is well-organized under clear section headers with one-level 'Source:' pointers to TanStack docs and node_modules type paths; no bundle files exist, and structure is good, though it runs longer than the under-50-line simple-skill case that would merit a 5.

Specificity

The description lists multiple concrete capabilities — 'Angular-signal-backed table.atoms', 'computed selectors', 'value-or-updater callbacks', 'external Angular Store atoms', 'injectTable initializer reruns' — giving comprehensive, mechanism-specific coverage of this skill's surface.

Completeness

The 'what' is clear (use these specific mechanisms), but there is no 'Use when...' clause or equivalent explicit trigger guidance, so per the rubric completeness is capped at 3 with 'when' only weakly implied by 'while accounting for injectTable initializer reruns'.

Trigger Term Quality

The terms are almost exclusively technical jargon (e.g. 'value-or-updater callbacks', 'injectTable initializer reruns') rather than natural phrases a user would say; it lacks common variations or synonyms a developer would naturally utter when asking for help.

Distinctiveness Conflict Risk

It targets a narrow, well-defined niche — TanStack Angular table state via signals/atoms — with distinct triggers and minimal risk of firing for an unrelated skill.