The body is ~275 lines with generally efficient content, but includes some unnecessary framing (e.g., explaining what a reviewer plugin is, restating that schemas should not be modified). The tables and code blocks earn their space, but several paragraphs could be tightened.

Provides executable bash commands for every step, complete JSON templates for rubric files and config, specific file paths, and a concrete validation command with expected output fields. Copy-paste ready throughout.

Clear 6-step process with two well-differentiated paths (Fork vs Scratch). Step 6 is an explicit validation checkpoint with expected output. The 'Common problems' table provides error recovery. The weight invariant is stated and reinforced at each relevant step.

Well-organized sections with the main skill as overview. Default rubric files are correctly referenced in references/default-rubric/ (verified to exist). Schemas are in references/schemas/. The reviewer-SKILL.md is a separate reference file. No deeply nested references; all one level deep.

Lists multiple concrete actions: 'Scaffold and author a custom Tessl reviewer plugin', 'forking the default rubric or building one from scratch', 'scaffolds the plugin directory', 'writes rubric files and config.json', 'validates with tessl review run'.

Clearly answers both what ('Scaffold and author a custom Tessl reviewer plugin') and when ('Use when the user wants to create or customise a review plugin, fork or tweak the default reviewer rubric, change scoring weights, add custom judges, or build a domain-specific rubric').

Strong coverage of natural terms: 'review plugin', 'reviewer plugin', 'rubric', 'scoring weights', 'custom judges', 'domain-specific rubric', 'tessl review', 'fork', 'tweak'. These match what a user would naturally say.

Highly specific niche: creating reviewer plugins for tessl review. The domain-specific terminology ('reviewer plugin', 'rubric', 'tessl review') makes conflicts with other skills very unlikely.