diff --git a/scripts/e2e.sh b/scripts/e2e.sh
index 2ce02fa8..c8c4fa5d 100755
--- a/scripts/e2e.sh
+++ b/scripts/e2e.sh
@@ -83,8 +83,10 @@ trap cleanup EXIT
 (cd "$RDM_WT" && go build -o "$OUT/agent-system-rdm" .) || die "rdm build failed"
 log "rdm binary: $OUT/agent-system-rdm (RDM@${RDM_SHA:0:12}, pins@${PIN_SHA_WANT:0:12})"
 
-log "build base CLI (user create)"
-(cd "$DEV_ROOT/modules/backend" && go build -o "$OUT/agent-system" ./cmd/agent-system) \
+log "build base CLI (user create) from the same pinned backend as the RDM binary"
+# 版本一致性：建号 CLI 必须与被测 RDM 二进制共用同一基座 pin——用 Dev 顶层
+# backend（main 最新）建号会把库迁到更高 schema，RDM pins（较旧）打不开。
+(cd "$RDM_WT/pins/agent-system-backend" && go build -o "$OUT/agent-system" ./cmd/agent-system) \
   || die "backend cli build failed"
 
 log "build frontend dist (contracts + ui deps + bundle, via make frontend)"