diff --git a/frontend/src/api/client.ts b/frontend/src/api/client.ts
index d07c0431..5dabf6a4 100644
--- a/frontend/src/api/client.ts
+++ b/frontend/src/api/client.ts
@@ -1,4 +1,4 @@
-import { abortableDelay } from '../utils/abortableDelay';
+import { abortableDelay } from '../utils/abortableDelay.ts';
 // Backend base URL.
 //   • VITE_API_URL                → explicit override (any deploy).
 //   • Tauri webview               → the local sidecar (127.0.0.1:<port>).
diff --git a/frontend/src/utils/backendCrash.ts b/frontend/src/utils/backendCrash.ts
index 5fff4d19..ed4d7df2 100644
--- a/frontend/src/utils/backendCrash.ts
+++ b/frontend/src/utils/backendCrash.ts
@@ -1,4 +1,4 @@
-import { abortableDelay } from './abortableDelay';
+import { abortableDelay } from './abortableDelay.ts';
 /**
  * backendCrash — frontend bridge to the desktop shell's crash forensics
  * (#941, src-tauri/src/crash.rs).