docs(P21PWA2-4,P21PWA2-5): PWA-2矩阵边界回归清单收口

scripts/validate-feature-matrix.py

@@ -49,6 +49,7 @@ CSV_FACT_SOURCES = [
     ROOT / "issues" / "2026-03-10_21-05-59-p20-travel-2-l5-corporate-payments-refresh.csv",
     ROOT / "issues" / "2026-03-11_09-57-28-p20-travel-3-l5-reconciliation-erp-bridge-refresh.csv",
     ROOT / "issues" / "2026-03-11_17-50-39-p21-pwa-1-l5-asset-scan-refresh.csv",
+    ROOT / "issues" / "2026-03-12_04-32-13-p21-pwa-2-l5-offline-deeplink-refresh.csv",
 ]
 
 ID_PATTERN = re.compile(r"^[A-Z][0-9][0-9A-Za-z-]*$")