Project-2 baseline

worker-toolkit-potion-polyglot/.claude/skills/write-atomic-rubric/SKILL.md

@@ -56,8 +56,9 @@ Each criterion carries:
   descriptive enough to be quoted on its own ("names-the-injected-config-key").
 - **`category`** — one of three values. `primary_intent` marks a requirement at the
   heart of what the task asks for. `extra_credit` marks a valuable behavior beyond the
-  task's requirements; it can only raise the score, and a response that does not earn
-  it loses nothing. `dodged_bullet` marks a specific failure the response must avoid; a
+  task's requirements; it can only raise the score. A response that earns it partly
+  gets half the effect of a full pass, and a response that does not earn it loses
+  nothing. `dodged_bullet` marks a specific failure the response must avoid; a
   response that avoids it passes the criterion.
 - **`severity`** — how heavily a failed criterion weighs in the score: `crux`,
   `certain_dealbreaker`, `possible_dealbreaker`, or `unlikely_dealbreaker` (displayed
@@ -82,7 +83,9 @@ Each criterion carries:
 - **Phrase requirements positively.** Write "The response should ..." or "The response
   should avoid ..."; never write "should not". Factual criteria carry their answer key
   inline, in bold, so the criterion is judgeable without opening another document.
-- **Keep each criterion self-contained.** Never reference one criterion from another.
+- **Keep each criterion self-contained.** Its verdict must never depend on another
+  criterion's verdict. An elaboration may name the criterion that primarily assesses
+  a concern, so the same failure is not charged twice; that scope note is fine.
   A criterion may briefly restate a fact that also lives in `grader-context.md` so
   that it stands alone; that duplication is intended, and it is the one exception to
   the source's say-each-thing-once rule.