fix(browser): close guest reload destruction race

src/renderer/src/components/browser-pane/browser-reload-action.test.ts

@@ -83,6 +83,24 @@ describe('reloadBrowserPageWebview', () => {
     expect(webview.reload).not.toHaveBeenCalled()
   })
 
+  it('reports a guest destroyed between the liveness probe and reload', () => {
+    const getWebContentsId = vi
+      .fn<() => number>()
+      .mockReturnValueOnce(42)
+      .mockImplementation(() => {
+        throw new Error('WebContents is destroyed')
+      })
+    const webview = createWebview({
+      getWebContentsId,
+      reload: vi.fn(() => {
+        throw new Error('The WebView must be attached to the DOM')
+      })
+    })
+
+    expect(reloadBrowserPageWebview(webview, { ignoreCache: false })).toBe('guest-missing')
+    expect(getWebContentsId).toHaveBeenCalledTimes(2)
+  })
+
   // Why: pre-dom-ready reload throws too, but a live guest is already loading — recovery must not replace it.
   it('reports not-ready when a live guest rejects the reload', () => {
     const webview = createWebview({

src/renderer/src/components/browser-pane/browser-reload-action.ts

@@ -57,6 +57,12 @@ export function reloadBrowserPageWebview(
       webview.reload()
     }
   } catch {
+    try {
+      webview.getWebContentsId()
+    } catch {
+      // Why: the guest can be destroyed between the liveness probe and reload.
+      return 'guest-missing'
+    }
     return 'not-ready'
   }
   return 'reloaded'