fix(test): stabilize E2E cockpit flow and add LM Studio novel integration test

Harden cockpit dismiss timing and global settings navigation in E2E helpers, tune short-chapter AI prompts for local models, fix electron-updater CJS loading, and add a 10-chapter auto-writing integration test against LM Studio.

Co-authored-by: Cursor <cursoragent@cursor.com>

e2e/p21-features.spec.ts

@@ -20,14 +20,27 @@ async function skipOnboarding(page: Page): Promise<void> {
   }
 }
 
+async function dismissCockpitIfOpen(page: Page): Promise<void> {
+  const cockpit = page.locator('[data-testid="cockpit-modal"]')
+  try {
+    await cockpit.waitFor({ state: 'visible', timeout: 15_000 })
+    await cockpit.locator('.modal-close').click()
+    await expect(cockpit).toBeHidden({ timeout: 5000 })
+  } catch {
+    /* cockpit did not open */
+  }
+}
+
 async function createAndOpenBook(page: Page): Promise<void> {
   await page.getByRole('button', { name: /新建书籍/ }).first().click()
   await page.locator('.dialog-content input').first().fill('拖拽测试')
   await page.getByRole('button', { name: '创建' }).click()
   await expect(page.locator('#editor-layout')).toBeVisible({ timeout: 15_000 })
+  await dismissCockpitIfOpen(page)
 }
 
 async function ensureChapterEditor(page: Page): Promise<void> {
+  await dismissCockpitIfOpen(page)
   await page.getByRole('button', { name: '+ 新章' }).click()
   await expect(page.locator('.ProseMirror')).toBeVisible({ timeout: 10_000 })
 }
@@ -150,6 +163,7 @@ test.describe('P2.1 features', () => {
     await page.getByTestId('inspiration-save-btn').click()
     await expect(page.getByTestId('inspiration-modal')).toBeHidden({ timeout: 10_000 })
 
+    await page.getByTestId('sidebar-tab-inspiration').click()
     await expect(page.getByTestId('inspiration-list')).toBeVisible()
     await expect(page.getByTestId('inspiration-list').getByText(idea)).toBeVisible({ timeout: 10_000 })
     await app.close()