diff --git a/static/js/cookbookRunning.js b/static/js/cookbookRunning.js
index 47f7a1b62..61dadd51d 100644
--- a/static/js/cookbookRunning.js
+++ b/static/js/cookbookRunning.js
@@ -3533,12 +3533,22 @@ async function _pollBackgroundStatus() {
         // dead-session check inspects). Recover "done" from the retained output's
         // exit-0 sentinel so a clean install isn't downgraded to crashed.
         const depDone = !!task.payload?._dep && _depInstallSucceeded(task.output);
+        // A finished model download whose tmux pane is gone is also reported
+        // "stopped" (the dead-session check can miss the landed snapshot).
+        // Recover "done" from the terminal `DOWNLOAD_OK` sentinel — emitted
+        // only after the runner exits 0 — so a completed download isn't
+        // downgraded to crashed. This background poll runs blind (no live
+        // stream to debounce against), so unlike the reconnect loop it keys
+        // off the conclusive exit sentinel only, never the `/snapshots/` path,
+        // which can be printed mid-stream for multi-file downloads.
+        const downloadDone = task.type === 'download'
+          && String(task.output || '').includes('DOWNLOAD_OK');
         const nextStatus = live.status === 'completed'
           ? 'done'
           : (live.status === 'error'
             ? 'error'
             : (live.status === 'stopped'
-                ? (depDone ? 'done' : (task.type === 'download' ? 'crashed' : 'stopped'))
+                ? ((depDone || downloadDone) ? 'done' : (task.type === 'download' ? 'crashed' : 'stopped'))
                 : null));
         if (nextStatus && task.status !== nextStatus) {
           updates.status = nextStatus;
diff --git a/tests/test_cookbook_dependency_completion_regression.py b/tests/test_cookbook_dependency_completion_regression.py
index 1533bdaca..1427cebaa 100644
--- a/tests/test_cookbook_dependency_completion_regression.py
+++ b/tests/test_cookbook_dependency_completion_regression.py
@@ -74,7 +74,23 @@ def test_background_poll_recovers_done_for_stopped_dependency_install():
     source = _read("static/js/cookbookRunning.js")
 
     assert "const depDone = !!task.payload?._dep && _depInstallSucceeded(task.output);" in source
-    assert "depDone ? 'done' : (task.type === 'download' ? 'crashed' : 'stopped')" in source
+    assert "(depDone || downloadDone) ? 'done' : (task.type === 'download' ? 'crashed' : 'stopped')" in source
+
+
+def test_background_poll_recovers_done_for_completed_download():
+    """When the backend reports a finished model download as "stopped" (its
+    tmux pane is gone after DOWNLOAD_OK, so the dead-session check can miss the
+    landed snapshot), the reconciler must recover "done" from the terminal
+    DOWNLOAD_OK sentinel instead of downgrading the card to crashed. The
+    background poll keys off DOWNLOAD_OK only (not the "/snapshots/" path, which
+    can appear mid-stream for multi-file downloads)."""
+    source = _read("static/js/cookbookRunning.js")
+
+    normalized = " ".join(source.split())
+    assert (
+        "const downloadDone = task.type === 'download' "
+        "&& String(task.output || '').includes('DOWNLOAD_OK');"
+    ) in normalized
 
 
 def test_dependency_install_payload_keeps_env_path_for_refresh():