diff --git a/convex/machines.ts b/convex/machines.ts
index 091eca1..cec2657 100644
--- a/convex/machines.ts
+++ b/convex/machines.ts
@@ -1018,10 +1018,27 @@ export const heartbeat = mutation({
       }
     }
 
-    const sanitizedInventory = sanitizeInventoryPayload(args.inventory)
+    // Extrair inventory de args.inventory ou de args.metadata.inventory (agente envia em metadata)
+    const rawInventory = args.inventory ?? (incomingMeta?.["inventory"] as Record<string, unknown> | undefined)
+    const sanitizedInventory = sanitizeInventoryPayload(rawInventory)
     const currentInventory = ensureRecord(currentMetadata.inventory)
     const incomingInventoryHash = hashJson(sanitizedInventory)
     const currentInventoryHash = typeof currentMetadata["inventoryHash"] === "string" ? currentMetadata["inventoryHash"] : null
+
+    // DEBUG: log para verificar dados extended
+    if (sanitizedInventory?.["extended"]) {
+      console.log("[heartbeat] extended keys:", Object.keys(sanitizedInventory["extended"] as object))
+      const win = (sanitizedInventory["extended"] as Record<string, unknown>)?.["windows"] as Record<string, unknown> | undefined
+      if (win) {
+        console.log("[heartbeat] windows keys:", Object.keys(win))
+        if (win["bootInfo"]) {
+          console.log("[heartbeat] bootInfo:", JSON.stringify(win["bootInfo"]))
+        }
+      }
+    } else {
+      console.log("[heartbeat] no extended in sanitizedInventory, source:", args.inventory ? "args.inventory" : incomingMeta?.["inventory"] ? "metadata.inventory" : "none")
+    }
+
     if (sanitizedInventory && incomingInventoryHash && incomingInventoryHash !== currentInventoryHash) {
       metadataPatch.inventory = mergeInventory(currentInventory, sanitizedInventory)
       metadataPatch.inventoryHash = incomingInventoryHash