test: cover design text context menu

.project-docs/30-worklog/tasks/20260907-input-context-menu-a7c31e.md

@@ -19,6 +19,9 @@
   with the current window lifecycle.
 - Restore the smallest Main-owned native text-editing context-menu behavior and add
   focused regression coverage at the real window/event seam.
+- Verify that the AI Design `design-chat-composer` textarea shares the same
+  primary Renderer seam, and extend the Electron regression to cover both Code
+  and Design textarea controls without adding a duplicate listener.
 - Update user-facing documentation or Electron E2E coverage only where current
   behavior and the shared fixture require it.
 
@@ -51,9 +54,15 @@
   content still produces no menu.
 - Registered the listener once during primary-window creation without adding
   Renderer, Preload, IPC, Host API, or direct clipboard access.
+- Confirmed `DesignConversationPane` renders the AI Design composer as the
+  ordinary `<textarea id="design-chat-composer">` produced by the shared
+  `Textarea` component inside that same primary Renderer. The window-level
+  listener therefore covers both AI Code and AI Design without a second
+  production listener.
 - Added five focused unit cases and an Electron E2E regression that dispatches
-  a real right-click inside the primary Renderer window and observes one native
-  menu popup with the expected editing actions.
+  real right-clicks on Code and Design textarea controls inside the primary
+  Renderer window and observes two native menu popups with the expected editing
+  actions.
 - Synchronized `README.md` with the restored desktop behavior and ownership
   boundary.
 
@@ -69,7 +78,8 @@
 - Green phase:
   - `corepack pnpm exec vitest run tests/unit/context-menu.test.ts` — 5 passed.
   - `corepack pnpm exec playwright test tests/e2e/context-menu.spec.ts` — 1
-    passed.
+    passed, covering both Code and Design textareas with two observed native
+    popups.
   - `corepack pnpm run typecheck` — passed.
   - `corepack pnpm exec eslint electron/main/context-menu.ts electron/main/index.ts tests/unit/context-menu.test.ts tests/e2e/context-menu.spec.ts`
     — passed.

tests/e2e/context-menu.spec.ts

@@ -47,29 +47,40 @@ async function readContextMenuProbe(app: ElectronApplication): Promise<ContextMe
 }
 
 test.describe('Makelore text context menu', () => {
-  test('opens native editing actions for editable text', async ({ launchElectronApp }) => {
+  test('opens native editing actions for Code and Design textareas', async ({ launchElectronApp }) => {
     const app = await launchElectronApp({ skipSetup: true });
 
     try {
       const page = await getStableWindow(app);
       await installContextMenuProbe(app);
       await page.evaluate(() => {
-        const input = document.createElement('input');
-        input.id = 'context-menu-e2e-input';
-        input.style.position = 'fixed';
-        input.style.inset = '80px auto auto 80px';
-        input.style.zIndex = '2147483647';
+        const composerIds = [
+          'context-menu-e2e-code-composer',
+          'design-chat-composer',
+        ];
 
-        document.body.append(input);
+        for (const [index, id] of composerIds.entries()) {
+          const textarea = document.createElement('textarea');
+          textarea.id = id;
+          textarea.style.position = 'fixed';
+          textarea.style.inset = `${80 + index * 80}px auto auto 80px`;
+          textarea.style.zIndex = '2147483647';
+          document.body.append(textarea);
+        }
       });
 
-      const input = page.locator('#context-menu-e2e-input');
-      await input.fill('Makelore');
-      await input.selectText();
-      await input.click({ button: 'right' });
+      for (const selector of [
+        '#context-menu-e2e-code-composer',
+        '#design-chat-composer',
+      ]) {
+        const textarea = page.locator(selector);
+        await textarea.fill('Makelore');
+        await textarea.selectText();
+        await textarea.click({ button: 'right' });
+      }
 
       await expect.poll(async () => await readContextMenuProbe(app)).toEqual({
-        popupCount: 1,
+        popupCount: 2,
         template: [
           { label: '剪切', role: 'cut', type: 'normal' },
           { label: '复制', role: 'copy', type: 'normal' },