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worker-toolkit-potion-polyglot/.claude/skills/detector-rubric-clarity/SKILL.md

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+---
+name: detector-rubric-clarity
+description: |
+  Self-check your holistic rubric for whether it's well-written
+  enough for a grader to apply consistently. Catches material ambiguity in
+  scoring tiers, heavy penalties, and pass/fail criteria, plus typos, grammar
+  errors, and disfluent prose that interrupt the reader. Doesn't flag
+  every microscopic ambiguity or awkward sentence — only what would
+  actually affect grading or block use.
+allowed-tools: Bash, Read, Write
+---
+
+# Rubric-clarity detector
+
+This skill checks the prose of your holistic rubric (the file
+`bash scripts/guidance-target.sh <slug>` resolves) for two failure shapes:
+material ambiguity in load-bearing wording (scoring tiers, heavy penalties,
+pass/fail criteria that two reasonable graders could apply differently)
+and copy-edit issues (typos, grammar errors, disfluent sentences) that
+make the doc fail to read professionally.
+
+Read these before deciding:
+
+1. `.claude/skills/_detector-worker-shell.md` — where to write the report and how to handle re-runs.
+2. `.claude/skills/detector-rubric-clarity/core.md` — what counts as material ambiguity vs. copy-edit issues, verdict definitions, frontmatter/body schema.
+
+Compose the report per the schema in `core.md` and write it per `_detector-worker-shell.md`.
+
+## Acting on the verdict
+
+- **`clear`** — the rubric reads professionally and the scoring criteria
+  pin down what a grader should look for. Good.
+- **`minor-issues`** — small copy-edit nits worth polishing but no
+  load-bearing ambiguity. Look at the issues list in the report; tighten
+  them up. No need to rebuild the rubric.
+- **`material-issues`** — at least one load-bearing scoring criterion is
+  ambiguous, OR the prose has enough errors that the doc doesn't read
+  professionally. Look at the "material ambiguities" section in the
+  report — those are the wordings to rewrite. Re-run this skill after
+  rewriting.
+- **`not-applicable`** — the rubric is missing, empty, or template-only.
+  Write the rubric first, then come back to this skill.