exam-quiz

# exam-quiz — question drilling and grading ## Purpose Present one chapter/phase-scoped bank item at a time, grade against its stored answer, archive wrong/skipped items through state, and return control to `exam-cram`. Never invent a question or answer. ## Activation Use after teaching when a checkpoint is needed, or when the student asks for drills or a mock exam. ## Inputs - Existing `references/quiz_bank.json`, whose items have `type`, answer/provenance fields, and `chapter` or `phase`; subjective items also have `keywords`. - Current chapter/phase and `study_state.json` mastery/scope. An untagged item cannot enter a chapter checkpoint. - Optional `difficulty` (1–5) and `difficulty_reason` from `score_difficulty.py`: a structural lower bound, never semantic truth or a per-student score. ## Workflow 1. **Select only eligible bank items.** Filter both `chapter` and `phase`. A missing bank is an incomplete workspace and returns to `exam-ingest`; an existing but empty usable pool produces no substitute and caps completion at `covered_unverified`. The default source pool is mixed. Persist a student restriction and select it with `scripts/select_questions.py`; exclude and count items lacking `source_type`. Before any one-turn exception say 「⚠️ 临时覆盖你的 <scope> 范围偏好」 or `⚠️ Temporarily overriding your <scope> scope preference`; do not silently change the stored scope. For targeted/checkpoint selection run `python "${CLAUDE_SKILL_DIR}/scripts/select_hard_questions.p...