The body is lean bullet-pointed standards with no padding explaining Angular concepts, assuming Claude's competence, matching the level-3 anchor; the minor reinforcement in the Anti-Patterns section is deliberate do/don't signaling rather than wasteful verbosity.

Concrete, executable guidance throughout — "Files < 400 lines", "kebab-case with type suffix (e.g., hero-list.component.ts)", and specific folder paths — with copy-ready examples, matching the level-3 anchor; absence of runnable code is not penalized for this instruction-only skill.

This is a simple single-purpose skill under 50 lines with clearly organized sections (Principles, Naming Standards, Folder Structure, Anti-Patterns, References) and no destructive or batch operations, so the simple-skills allowance yields level 3.

A concise overview with one well-signaled, one-level-deep reference (the verified references/naming-convention.md link under a References section) that extends the inline naming guidance, matching the level-3 anchor.

"Naming conventions, file structure, and coding standards" names the Angular domain plus three focus areas, but as noun-categories rather than concrete verb-actions like 'extract' or 'fill', matching the level-2 anchor; not level 3 because no specific executable actions are listed.

It explicitly states what ("Naming conventions, file structure, and coding standards for Angular projects") and when ("Use when naming Angular files, organizing project structure, or following Angular style guide"), satisfying the level-3 anchor for both what and when with an explicit trigger clause.

"Use when naming Angular files, organizing project structure, or following Angular style guide" gives three natural trigger phrases a user would actually say, matching the level-3 anchor for good coverage.

The description is scoped to Angular with distinctive triggers, making it unlikely to fire for unrelated skills, matching the level-3 anchor for a clear niche.