Fix env save dialog fallback

electron/main.ts

@@ -1,5 +1,5 @@
 import { app, BrowserWindow, Menu, dialog, ipcMain } from "electron";
-import type { OpenDialogOptions } from "electron";
+import type { OpenDialogOptions, SaveDialogOptions } from "electron";
 import { readFile, writeFile } from "node:fs/promises";
 import path from "node:path";
 import { fileURLToPath } from "node:url";
@@ -55,11 +55,17 @@ ipcMain.handle("envhelper:open-file", async (event) => {
   };
 });
 
-ipcMain.handle("envhelper:save-file", async (_event, content: string) => {
-  const result = await dialog.showSaveDialog({
+ipcMain.handle("envhelper:save-file", async (event, content: string) => {
+  const owner = BrowserWindow.fromWebContents(event.sender);
+  const options = {
     defaultPath: ".env",
-    filters: [{ name: "Environment file", extensions: ["env"] }]
-  });
+    filters: [
+      { name: "Environment files", extensions: ["env", "txt"] },
+      { name: "All files", extensions: ["*"] }
+    ]
+  } satisfies SaveDialogOptions;
+
+  const result = owner ? await dialog.showSaveDialog(owner, options) : await dialog.showSaveDialog(options);
 
   if (result.canceled || !result.filePath) {
     return null;

src/App.tsx

@@ -473,6 +473,20 @@ function openFileWithBrowserPicker(): Promise<{ name: string; content: string }
   });
 }
 
+function saveFileWithBrowserDownload(content: string) {
+  const blob = new Blob([content], { type: "text/plain;charset=utf-8" });
+  const url = URL.createObjectURL(blob);
+  const anchor = document.createElement("a");
+  anchor.href = url;
+  anchor.download = ".env";
+  anchor.style.display = "none";
+
+  document.body.append(anchor);
+  anchor.click();
+  anchor.remove();
+  URL.revokeObjectURL(url);
+}
+
 export default function App() {
   const [input, setInput] = useState("");
   const [loadedPath, setLoadedPath] = useState<string | null>(null);
@@ -534,7 +548,16 @@ export default function App() {
   }
 
   async function saveFile() {
-    await window.envHelper?.saveFile(result.output);
+    try {
+      if (window.envHelper?.saveFile) {
+        await window.envHelper.saveFile(result.output);
+        return;
+      }
+    } catch (error) {
+      console.warn("Native save dialog failed, falling back to browser download.", error);
+    }
+
+    saveFileWithBrowserDownload(result.output);
   }
 
   async function copyOutput() {