Fix file loading dialog fallback

electron/main.ts

@@ -1,4 +1,5 @@
 import { app, BrowserWindow, Menu, dialog, ipcMain } from "electron";
+import type { OpenDialogOptions } from "electron";
 import { readFile, writeFile } from "node:fs/promises";
 import path from "node:path";
 import { fileURLToPath } from "node:url";
@@ -31,11 +32,17 @@ async function createWindow() {
   }
 }
 
-ipcMain.handle("envhelper:open-file", async () => {
-  const result = await dialog.showOpenDialog({
+ipcMain.handle("envhelper:open-file", async (event) => {
+  const owner = BrowserWindow.fromWebContents(event.sender);
+  const options = {
     properties: ["openFile"],
-    filters: [{ name: "Environment files", extensions: ["env", "txt", "*"] }]
-  });
+    filters: [
+      { name: "Environment files", extensions: ["env", "txt"] },
+      { name: "All files", extensions: ["*"] }
+    ]
+  } satisfies OpenDialogOptions;
+
+  const result = owner ? await dialog.showOpenDialog(owner, options) : await dialog.showOpenDialog(options);
 
   if (result.canceled || result.filePaths.length === 0) {
     return null;