acu-nugget-recall

# ACU / Nugget Recall ## Orchestration Pattern 1. Require `target_summary`; never generate the scored summary inside this tactic. 2. Fetch the paper and create `acu-nugget-recall/`. 3. Extract units before exposing the summary to the unit-writing step. ACU uses extracted/binary units; Nugget uses authored, importance-tagged units. 4. Match all units against `target_summary` in one call. 5. Aggregate the results and write `03-recall-aggregate.json`. Write `01-atomic-unit-writing.json`, `02-atomic-unit-matching.json`, and `03-recall-aggregate.json`. Record the summary source. Report every unmatched unit, not just the score. For a single-summary Nugget run, carry the method's weak per-topic reliability caveat alongside the number.