feat(P16C-4,P16C-6): 完成供应商主数据前端与矩阵收口

scripts/validate-feature-matrix.py

@@ -30,6 +30,7 @@ CSV_FACT_SOURCES = [
     ROOT / "issues" / "2026-03-06_14-30-00-p15b-l5-leave-v1.csv",
     ROOT / "issues" / "2026-03-07_13-47-05-p16a-l5-master-data-core.csv",
     ROOT / "issues" / "2026-03-07_16-22-07-p16b-l5-holiday-calendar.csv",
+    ROOT / "issues" / "2026-03-07_17-14-39-p16c-l5-suppliers.csv",
 ]
 
 ID_PATTERN = re.compile(r"^[A-Z][0-9][0-9A-Za-z-]*$")