운영 문서와 상태판 동기화

docs/phase3/kpi-measurement-plan.md

@@ -147,6 +147,21 @@ Use the same item universe for kappa and ICC that is later referenced by the dat
 export manifest. If agreement fails, the dataset can still be exported as a technical
 artifact only when the manifest marks it `not_gold`.
 
+### Pre/Post Export Scaffold
+
+The current app stores aggregate pre/post values in `app.learner_prepost_measure`.
+Generate the Phase 3 scaffold files with:
+
+```powershell
+python scripts\export-phase3-kpi.py --database-url $env:DATABASE_URL --output-root $root --pilot-id phase3-pilot-draft
+```
+
+This writes `02-measures/prepost_measures.csv` and `02-measures/kpi_report.json`.
+Participant identifiers are pseudonymous `P3-###` keys. The report fills paired
+normalized mean pre/post/delta and complete/missing pair counts for the three pilot
+measures. It does not encode validated item scoring, experimental/control assignment,
+statistical tests, or official pass/fail interpretation.
+
 ## Operator Checklist
 
 - [ ] Evidence root exists outside the source tree.
@@ -162,4 +177,3 @@ Validation command:
 ```powershell
 python scripts\check-phase3-artifacts.py --check --evidence-root $root
 ```
-