diff --git a/scripts/src/agentrun/cleanup-session-pvcs.mjs b/scripts/src/agentrun/cleanup-session-pvcs.mjs
index 58ed0c82..b8c49b0e 100644
--- a/scripts/src/agentrun/cleanup-session-pvcs.mjs
+++ b/scripts/src/agentrun/cleanup-session-pvcs.mjs
@@ -90,7 +90,20 @@ for (const pvc of pvcData.items || []) {
   }
 }
 
-const sizeScan = duBytesByPath(candidateFacts.map((item) => item.hostPath));
+const selectsAllCandidates = candidateFacts.length <= limit;
+const sizeScan = confirm && selectsAllCandidates
+  ? {
+      sizes: new Map(),
+      summary: {
+        requested: candidateFacts.length,
+        measured: 0,
+        timedOut: false,
+        status: null,
+        skipped: true,
+        reason: "confirmed-run-selects-all-candidates",
+      },
+    }
+  : duBytesByPath(candidateFacts.map((item) => item.hostPath));
 const candidates = candidateFacts.map(({ hostPath, ...item }) => ({
   ...item,
   estimatedBytes: sizeScan.sizes.get(hostPath) ?? null,