added 260907 version of worker toolkit

worker-toolkit-flaredown/.claude/skills/detector-rubric-coverage/SKILL.md

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+---
+name: detector-rubric-coverage
+description: |
+  Self-check that your atomic rubric fully captures your holistic rubric.
+  Verifies four things. Every load-bearing requirement, penalty, and
+  "do not penalize" rule in the holistic rubric maps to a criterion. No
+  criterion invents a requirement or an answer-key fact the holistic rubric
+  does not support. The holistic rubric's context sections survive in
+  `tests/grader-context.md`. Every heavy penalty that targets the overall
+  score is encoded as a crux criterion, or at `certain_dealbreaker` once two
+  criteria already carry crux. Restructuring is never flagged; only
+  content differences that change scoring are. Reads the holistic rubric,
+  `tests/atomic-rubric.yaml` (or `tests/rubrics.yaml`), and
+  `tests/grader-context.md`. Emits `not-applicable` when the task has no
+  atomic rubric yet.
+allowed-tools: Bash, Read, Write
+---
+
+# Rubric-coverage detector
+
+This skill checks that your atomic rubric and your holistic rubric express the
+same task. The atomic rubric restructures the holistic rubric into criteria.
+It must not lose scoring content, and it must not add scoring content.
+
+The failure shapes to catch:
+
+- **A lost requirement or penalty.** The holistic rubric requires something,
+  or penalizes something, and no criterion captures it. A response the
+  holistic rubric would mark down now scores clean.
+- **A lost "do not penalize" rule.** The holistic rubric protects a behavior,
+  and the criteria drop the protection. The atomic rubric now penalizes what
+  the holistic rubric permits.
+- **Invented content.** A criterion requires something the holistic rubric
+  never asks for, or states an answer-key fact with no source in the holistic
+  rubric or the context document.
+- **Lost context.** A ground-truth fact that criteria rely on is missing from
+  both `tests/grader-context.md` and the criteria themselves.
+- **A crux mismatch.** The holistic rubric applies a heavy penalty against
+  the overall score, and no criterion carries `severity: crux` to encode it.
+  A task carries at most two crux criteria; once two are designated, a
+  further overall-score penalty is correctly encoded at `certain_dealbreaker`.
+
+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-coverage/core.md` — what counts as a coverage gap versus invented content, the crux-alignment rule, what is deliberately not a finding, verdict definitions, and the 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 atomic rubric fully captures the holistic rubric. A
+  grader scoring from either form would land in the same place.
+- **`minor-issues`** — the load-bearing mapping is sound, but some
+  non-load-bearing content drifted. Read the findings and tighten the
+  conversion. There is no need to rebuild the rubric.
+- **`material-issues`** — a load-bearing requirement, penalty, or protection
+  is missing, a criterion invents content, needed context is gone, or a
+  heavy penalty against the overall score has no criterion encoding it at
+  `crux` (or at `certain_dealbreaker` once two crux criteria exist). Fix the
+  named findings in the atomic rubric. If a finding reveals that the
+  holistic rubric itself needs the change, edit the holistic rubric first
+  and then re-convert, so the two forms stay in agreement. Re-run this
+  skill after editing either file.
+- **`not-applicable`** — the task has no atomic rubric yet, or no holistic
+  rubric to compare it against. Write the missing rubric first, then come
+  back to this skill.