diff --git a/docs/superpowers/plans/2026-06-22-merge-generate-buttons.md b/docs/superpowers/plans/2026-06-22-merge-generate-buttons.md
new file mode 100644
index 0000000..81ae999
--- /dev/null
+++ b/docs/superpowers/plans/2026-06-22-merge-generate-buttons.md
@@ -0,0 +1,436 @@
+# Merge Generate Buttons Into Dropdown Implementation Plan
+
+> **For agentic workers:** REQUIRED SUB-SKILL: Use superpowers:subagent-driven-development (recommended) or superpowers:executing-plans to implement this plan task-by-task. Steps use checkbox (`- [ ]`) syntax for tracking.
+
+**Goal:** Replace the two separate "批量生成" / "生成一篇" toolbar buttons with a single "生成教案 ▾" button that opens a dropdown menu offering both actions.
+
+**Architecture:** Extract a new self-contained Vue component `GenerateMenuButton.vue` that owns the open/closed state and outside-click/Escape dismissal, and emits the same `generate` / `batchGenerate` events the toolbar already emits today. `WorkspaceToolbar.vue` swaps its two `<button>` elements for this component and forwards its events unchanged, so `WorkspaceView.vue` requires no changes at all.
+
+**Tech Stack:** Vue 3 (`<script setup lang="ts">`), Vitest + `@vue/test-utils` for component tests, plain CSS (no UI component library) in `src/style.css`.
+
+## Global Constraints
+
+- Button label for the merged button is exactly "生成教案 ▾" (text "生成教案" + a down-caret).
+- Clicking the main button only toggles the dropdown; it never directly fires `generate` or `batchGenerate`.
+- The two menu item buttons keep their existing `data-testid` values: `data-testid="generate"` and `data-testid="batch-generate"`.
+- The new toggle button uses `data-testid="generate-menu-toggle"`.
+- `WorkspaceToolbar`'s public `defineEmits` (`generate`, `batchGenerate`, plus the other existing events) and `WorkspaceView.vue`'s `@generate` / `@batch-generate` listeners must NOT change.
+- Reuse existing CSS design tokens (`var(--line)`, `var(--radius-md)`, `var(--green-100)`, `var(--green-600)`) — do not introduce new color/radius values.
+- No changes to `BatchGenerateDialog.vue`, `GenerateLessonDialog.vue`, or any generation/API logic.
+
+---
+
+### Task 1: Create `GenerateMenuButton.vue` with tests
+
+**Files:**
+- Create: `src/components/GenerateMenuButton.vue`
+- Create: `src/components/GenerateMenuButton.test.ts`
+
+**Interfaces:**
+- Produces: `GenerateMenuButton` component with `defineEmits<{ generate: []; batchGenerate: [] }>()`. No props. Default export is the `.vue` SFC, imported as `import GenerateMenuButton from './GenerateMenuButton.vue'`.
+- DOM contract later tasks rely on:
+  - Toggle button: `button[data-testid="generate-menu-toggle"]`
+  - Menu item buttons (only present in DOM while menu is open): `button[data-testid="generate"]`, `button[data-testid="batch-generate"]`
+  - Menu list root: `ul.generate-menu-list`
+  - Component root wrapper: `div.generate-menu`
+
+- [ ] **Step 1: Write the failing tests**
+
+Create `src/components/GenerateMenuButton.test.ts`:
+
+```ts
+import { mount } from '@vue/test-utils'
+import { describe, expect, it } from 'vitest'
+import GenerateMenuButton from './GenerateMenuButton.vue'
+
+describe('GenerateMenuButton', () => {
+  it('renders the toggle button with the menu closed by default', () => {
+    const wrapper = mount(GenerateMenuButton, { attachTo: document.body })
+    expect(wrapper.get('button[data-testid="generate-menu-toggle"]').text()).toContain('生成教案')
+    expect(wrapper.find('[data-testid="generate"]').exists()).toBe(false)
+    expect(wrapper.find('[data-testid="batch-generate"]').exists()).toBe(false)
+    wrapper.unmount()
+  })
+
+  it('opens the menu when the toggle button is clicked', async () => {
+    const wrapper = mount(GenerateMenuButton, { attachTo: document.body })
+    await wrapper.get('button[data-testid="generate-menu-toggle"]').trigger('click')
+    expect(wrapper.get('[data-testid="generate"]').isVisible()).toBe(true)
+    expect(wrapper.get('[data-testid="batch-generate"]').isVisible()).toBe(true)
+    wrapper.unmount()
+  })
+
+  it('emits generate and closes the menu when "生成一篇" is clicked', async () => {
+    const wrapper = mount(GenerateMenuButton, { attachTo: document.body })
+    await wrapper.get('button[data-testid="generate-menu-toggle"]').trigger('click')
+    await wrapper.get('button[data-testid="generate"]').trigger('click')
+    expect(wrapper.emitted('generate')).toHaveLength(1)
+    expect(wrapper.find('[data-testid="generate"]').exists()).toBe(false)
+    wrapper.unmount()
+  })
+
+  it('emits batchGenerate and closes the menu when "批量生成" is clicked', async () => {
+    const wrapper = mount(GenerateMenuButton, { attachTo: document.body })
+    await wrapper.get('button[data-testid="generate-menu-toggle"]').trigger('click')
+    await wrapper.get('button[data-testid="batch-generate"]').trigger('click')
+    expect(wrapper.emitted('batchGenerate')).toHaveLength(1)
+    expect(wrapper.find('[data-testid="batch-generate"]').exists()).toBe(false)
+    wrapper.unmount()
+  })
+
+  it('closes the menu when clicking outside the component', async () => {
+    const wrapper = mount(GenerateMenuButton, { attachTo: document.body })
+    await wrapper.get('button[data-testid="generate-menu-toggle"]').trigger('click')
+    expect(wrapper.find('[data-testid="generate"]').exists()).toBe(true)
+
+    document.body.click()
+    await wrapper.vm.$nextTick()
+
+    expect(wrapper.find('[data-testid="generate"]').exists()).toBe(false)
+    wrapper.unmount()
+  })
+
+  it('closes the menu when Escape is pressed', async () => {
+    const wrapper = mount(GenerateMenuButton, { attachTo: document.body })
+    await wrapper.get('button[data-testid="generate-menu-toggle"]').trigger('click')
+    expect(wrapper.find('[data-testid="generate"]').exists()).toBe(true)
+
+    await wrapper.get('div.generate-menu').trigger('keydown', { key: 'Escape' })
+
+    expect(wrapper.find('[data-testid="generate"]').exists()).toBe(false)
+    wrapper.unmount()
+  })
+})
+```
+
+- [ ] **Step 2: Run tests to verify they fail**
+
+Run: `npx vitest run src/components/GenerateMenuButton.test.ts`
+Expected: FAIL — `Failed to resolve import "./GenerateMenuButton.vue"` (file doesn't exist yet).
+
+- [ ] **Step 3: Write the component implementation**
+
+Create `src/components/GenerateMenuButton.vue`:
+
+```vue
+<script setup lang="ts">
+import { onMounted, onUnmounted, ref } from 'vue'
+
+const emit = defineEmits<{
+  generate: []
+  batchGenerate: []
+}>()
+
+const open = ref(false)
+const rootRef = ref<HTMLElement | null>(null)
+
+function toggle(): void {
+  open.value = !open.value
+}
+
+function close(): void {
+  open.value = false
+}
+
+function select(action: 'generate' | 'batchGenerate'): void {
+  emit(action)
+  close()
+}
+
+function handleDocumentClick(event: MouseEvent): void {
+  if (!rootRef.value) return
+  if (!rootRef.value.contains(event.target as Node)) {
+    close()
+  }
+}
+
+function handleKeydown(event: KeyboardEvent): void {
+  if (event.key === 'Escape') {
+    close()
+  }
+}
+
+onMounted(() => {
+  document.addEventListener('click', handleDocumentClick)
+})
+
+onUnmounted(() => {
+  document.removeEventListener('click', handleDocumentClick)
+})
+</script>
+
+<template>
+  <div ref="rootRef" class="generate-menu" @keydown="handleKeydown">
+    <button
+      type="button"
+      data-testid="generate-menu-toggle"
+      :aria-expanded="open"
+      @click.stop="toggle"
+    >
+      生成教案 ▾
+    </button>
+    <ul v-if="open" class="generate-menu-list" role="menu">
+      <li role="menuitem">
+        <button type="button" data-testid="generate" @click="select('generate')">生成一篇</button>
+      </li>
+      <li role="menuitem">
+        <button type="button" data-testid="batch-generate" @click="select('batchGenerate')">
+          批量生成
+        </button>
+      </li>
+    </ul>
+  </div>
+</template>
+```
+
+Note: `@click.stop` on the toggle button prevents the same click that opens the menu from also being seen by `handleDocumentClick` as an "outside" click (the document listener is registered on `document`, and Vue's synthetic click on the button would otherwise bubble to it in the same tick before `open` is read — `.stop` keeps behavior deterministic regardless of listener order).
+
+- [ ] **Step 4: Run tests to verify they pass**
+
+Run: `npx vitest run src/components/GenerateMenuButton.test.ts`
+Expected: PASS (6 tests).
+
+- [ ] **Step 5: Commit**
+
+```bash
+git add src/components/GenerateMenuButton.vue src/components/GenerateMenuButton.test.ts
+git commit -m "feat: add GenerateMenuButton dropdown component"
+```
+
+---
+
+### Task 2: Wire `GenerateMenuButton` into `WorkspaceToolbar.vue`
+
+**Files:**
+- Modify: `src/components/WorkspaceToolbar.vue:1-32`
+- Modify: `src/components/WorkspaceToolbar.test.ts`
+
+**Interfaces:**
+- Consumes: `GenerateMenuButton` from Task 1, with events `generate` and `batchGenerate`, and DOM testids `generate-menu-toggle`, `generate`, `batch-generate` (only present once toggled open).
+- Produces: `WorkspaceToolbar` keeps emitting `generate` and `batchGenerate` exactly as before — no change to its own `defineEmits` block or to how `WorkspaceView.vue` listens to it.
+
+- [ ] **Step 1: Write the failing tests**
+
+Update `src/components/WorkspaceToolbar.test.ts` — replace the existing `generate`-related tests (lines 17-21 and 29-33) with versions that open the dropdown first:
+
+```ts
+import { mount } from '@vue/test-utils'
+import { describe, expect, it } from 'vitest'
+import WorkspaceToolbar from './WorkspaceToolbar.vue'
+
+function mountToolbar(lessonCount: number): ReturnType<typeof mount> {
+  return mount(WorkspaceToolbar, {
+    props: { lessonCount, warningCount: 0, saveStatus: 'idle' },
+  })
+}
+
+describe('WorkspaceToolbar', () => {
+  it('renders the lesson count', () => {
+    const wrapper = mountToolbar(3)
+    expect(wrapper.text()).toContain('共 3 课')
+  })
+
+  it('emits generate when the generate menu item is clicked', async () => {
+    const wrapper = mountToolbar(3)
+    await wrapper.get('button[data-testid="generate-menu-toggle"]').trigger('click')
+    await wrapper.get('button[data-testid="generate"]').trigger('click')
+    expect(wrapper.emitted('generate')).toHaveLength(1)
+  })
+
+  it('emits batchGenerate when the batch-generate menu item is clicked', async () => {
+    const wrapper = mountToolbar(3)
+    await wrapper.get('button[data-testid="generate-menu-toggle"]').trigger('click')
+    await wrapper.get('button[data-testid="batch-generate"]').trigger('click')
+    expect(wrapper.emitted('batchGenerate')).toHaveLength(1)
+  })
+
+  it('emits back when the back button is clicked', async () => {
+    const wrapper = mountToolbar(0)
+    await wrapper.get('button[data-testid="back"]').trigger('click')
+    expect(wrapper.emitted('back')).toHaveLength(1)
+  })
+
+  it('keeps the generate menu toggle and back button enabled even with no lessons', () => {
+    const wrapper = mountToolbar(0)
+    expect(
+      wrapper.get('button[data-testid="generate-menu-toggle"]').attributes('disabled'),
+    ).toBeUndefined()
+    expect(wrapper.get('button[data-testid="back"]').attributes('disabled')).toBeUndefined()
+  })
+
+  it('disables print, export and clear when there are no lessons', () => {
+    const wrapper = mountToolbar(0)
+    expect(wrapper.get('button[data-testid="print"]').attributes('disabled')).toBeDefined()
+    expect(wrapper.get('button[data-testid="export"]').attributes('disabled')).toBeDefined()
+    expect(wrapper.get('button[data-testid="clear"]').attributes('disabled')).toBeDefined()
+  })
+})
+```
+
+- [ ] **Step 2: Run tests to verify they fail**
+
+Run: `npx vitest run src/components/WorkspaceToolbar.test.ts`
+Expected: FAIL — `generate-menu-toggle` testid not found (toolbar still has the old two buttons).
+
+- [ ] **Step 3: Update the toolbar template**
+
+In `src/components/WorkspaceToolbar.vue`, add the import at the top of the `<script setup>` block (after the existing `SaveStatus` import on line 2):
+
+```ts
+import GenerateMenuButton from './GenerateMenuButton.vue'
+```
+
+Replace lines 31-32:
+
+```vue
+    <button type="button" data-testid="batch-generate" @click="$emit('batchGenerate')">批量生成</button>
+    <button type="button" data-testid="generate" @click="$emit('generate')">生成一篇</button>
+```
+
+with:
+
+```vue
+    <GenerateMenuButton @generate="$emit('generate')" @batch-generate="$emit('batchGenerate')" />
+```
+
+- [ ] **Step 4: Run tests to verify they pass**
+
+Run: `npx vitest run src/components/WorkspaceToolbar.test.ts`
+Expected: PASS (6 tests).
+
+- [ ] **Step 5: Commit**
+
+```bash
+git add src/components/WorkspaceToolbar.vue src/components/WorkspaceToolbar.test.ts
+git commit -m "feat: merge generate buttons into a single dropdown in WorkspaceToolbar"
+```
+
+---
+
+### Task 3: Update `WorkspaceView.test.ts` for the new dropdown flow
+
+**Files:**
+- Modify: `src/components/WorkspaceView.test.ts:95` and `:131`
+
+**Interfaces:**
+- Consumes: `data-testid="generate-menu-toggle"` from `GenerateMenuButton` (Task 1), rendered inside `WorkspaceToolbar` (Task 2) which is rendered inside `WorkspaceView`.
+
+- [ ] **Step 1: Run the existing suite to confirm the current failure**
+
+Run: `npx vitest run src/components/WorkspaceView.test.ts`
+Expected: FAIL on the two tests that click `[data-testid="generate"]` / `[data-testid="batch-generate"]` directly, because those buttons are no longer in the DOM until the dropdown is opened (`TestingLibraryElementError`-style "unable to find" error from `wrapper.get`).
+
+- [ ] **Step 2: Update the two call sites**
+
+In `src/components/WorkspaceView.test.ts`, change line 95 from:
+
+```ts
+    await wrapper.get('[data-testid="generate"]').trigger('click')
+```
+
+to:
+
+```ts
+    await wrapper.get('[data-testid="generate-menu-toggle"]').trigger('click')
+    await wrapper.get('[data-testid="generate"]').trigger('click')
+```
+
+And change line 131 from:
+
+```ts
+    await wrapper.get('[data-testid="batch-generate"]').trigger('click')
+```
+
+to:
+
+```ts
+    await wrapper.get('[data-testid="generate-menu-toggle"]').trigger('click')
+    await wrapper.get('[data-testid="batch-generate"]').trigger('click')
+```
+
+- [ ] **Step 3: Run tests to verify they pass**
+
+Run: `npx vitest run src/components/WorkspaceView.test.ts`
+Expected: PASS (all tests in the file, including the two updated ones).
+
+- [ ] **Step 4: Commit**
+
+```bash
+git add src/components/WorkspaceView.test.ts
+git commit -m "test: open the generate dropdown before clicking generate actions in WorkspaceView tests"
+```
+
+---
+
+### Task 4: Style the dropdown menu
+
+**Files:**
+- Modify: `src/style.css`
+
+**Interfaces:**
+- Consumes: existing design tokens `var(--line)`, `var(--radius-md)`, `var(--green-100)`, `var(--green-600)` (already defined elsewhere in `src/style.css`); existing selector `.workspace-toolbar button` (`src/style.css:251-264`) which still applies to the toggle button and menu item buttons since they are descendants of `.workspace-toolbar`.
+- Produces: `.generate-menu`, `.generate-menu-list` classes used by `GenerateMenuButton.vue` (Task 1).
+
+- [ ] **Step 1: Add the dropdown styles**
+
+In `src/style.css`, immediately after the `.workspace-toolbar button:disabled` rule (after line 271, before the `.workspace-toolbar-count` block at line 273), insert:
+
+```css
+.generate-menu {
+  position: relative;
+  display: inline-flex;
+}
+
+.generate-menu-list {
+  position: absolute;
+  top: 100%;
+  left: 0;
+  margin: 4px 0 0;
+  padding: 4px;
+  min-width: 120px;
+  list-style: none;
+  background: #fff;
+  border: 1px solid var(--line);
+  border-radius: var(--radius-md);
+  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
+  z-index: 10;
+}
+
+.generate-menu-list button {
+  display: block;
+  width: 100%;
+  border: none;
+  background: transparent;
+  border-radius: var(--radius-md);
+  padding: 8px 12px;
+  text-align: left;
+  color: var(--green-700);
+  cursor: pointer;
+}
+
+.generate-menu-list button:hover {
+  background: var(--green-100);
+}
+```
+
+- [ ] **Step 2: Make the dropdown wrapper behave like a toolbar button at narrow widths**
+
+In `src/style.css`, inside the existing `@media (max-width: 600px)` block (`src/style.css:729-745`), add a rule next to `.workspace-toolbar button { flex: 0 0 auto; }`:
+
+```css
+  .workspace-toolbar .generate-menu {
+    flex: 0 0 auto;
+  }
+```
+
+- [ ] **Step 3: Run the full test suite to confirm no regressions**
+
+Run: `npx vitest run`
+Expected: PASS — all existing suites (including `WorkspaceToolbar.test.ts`, `WorkspaceView.test.ts`, `GenerateMenuButton.test.ts`) still pass. CSS changes don't affect Vitest/jsdom assertions, this is a safety check that nothing else broke.
+
+- [ ] **Step 4: Commit**
+
+```bash
+git add src/style.css
+git commit -m "style: add dropdown styling for the merged generate menu button"
+```
diff --git a/src/components/WorkspaceToolbar.test.ts b/src/components/WorkspaceToolbar.test.ts
index 1ab7649..95b89ee 100644
--- a/src/components/WorkspaceToolbar.test.ts
+++ b/src/components/WorkspaceToolbar.test.ts
@@ -14,21 +14,31 @@ describe('WorkspaceToolbar', () => {
     expect(wrapper.text()).toContain('共 3 课')
   })
 
-  it('emits generate when the generate button is clicked', async () => {
+  it('emits generate when the generate menu item is clicked', async () => {
     const wrapper = mountToolbar(3)
+    await wrapper.get('button[data-testid="generate-menu-toggle"]').trigger('click')
     await wrapper.get('button[data-testid="generate"]').trigger('click')
     expect(wrapper.emitted('generate')).toHaveLength(1)
   })
 
+  it('emits batchGenerate when the batch-generate menu item is clicked', async () => {
+    const wrapper = mountToolbar(3)
+    await wrapper.get('button[data-testid="generate-menu-toggle"]').trigger('click')
+    await wrapper.get('button[data-testid="batch-generate"]').trigger('click')
+    expect(wrapper.emitted('batchGenerate')).toHaveLength(1)
+  })
+
   it('emits back when the back button is clicked', async () => {
     const wrapper = mountToolbar(0)
     await wrapper.get('button[data-testid="back"]').trigger('click')
     expect(wrapper.emitted('back')).toHaveLength(1)
   })
 
-  it('keeps generate and back enabled even with no lessons', () => {
+  it('keeps the generate menu toggle and back button enabled even with no lessons', () => {
     const wrapper = mountToolbar(0)
-    expect(wrapper.get('button[data-testid="generate"]').attributes('disabled')).toBeUndefined()
+    expect(
+      wrapper.get('button[data-testid="generate-menu-toggle"]').attributes('disabled'),
+    ).toBeUndefined()
     expect(wrapper.get('button[data-testid="back"]').attributes('disabled')).toBeUndefined()
   })
 
diff --git a/src/components/WorkspaceToolbar.vue b/src/components/WorkspaceToolbar.vue
index 18104cc..b2f2e84 100644
--- a/src/components/WorkspaceToolbar.vue
+++ b/src/components/WorkspaceToolbar.vue
@@ -1,5 +1,6 @@
 <script setup lang="ts">
 import type { SaveStatus } from '../composables/useTeachingBook'
+import GenerateMenuButton from './GenerateMenuButton.vue'
 
 const props = defineProps<{
   lessonCount: number
@@ -28,8 +29,7 @@ const saveStatusLabel: Record<SaveStatus, string> = {
 <template>
   <header class="workspace-toolbar">
     <button type="button" data-testid="back" @click="$emit('back')">返回列表</button>
-    <button type="button" data-testid="batch-generate" @click="$emit('batchGenerate')">批量生成</button>
-    <button type="button" data-testid="generate" @click="$emit('generate')">生成一篇</button>
+    <GenerateMenuButton @generate="$emit('generate')" @batch-generate="$emit('batchGenerate')" />
     <button type="button" data-testid="print" :disabled="lessonCount === 0" @click="$emit('print')">打印整册</button>
     <button type="button" data-testid="export" :disabled="lessonCount === 0" @click="$emit('export')">导出 MD</button>
     <button type="button" data-testid="clear" :disabled="lessonCount === 0" @click="$emit('clear')">清空</button>
diff --git a/src/components/WorkspaceView.test.ts b/src/components/WorkspaceView.test.ts
index 060dcf7..7515aa7 100644
--- a/src/components/WorkspaceView.test.ts
+++ b/src/components/WorkspaceView.test.ts
@@ -92,6 +92,7 @@ describe('WorkspaceView', () => {
     const wrapper = mount(WorkspaceView, { props: { bookId: 'b1' } })
     await flushPromises()
 
+    await wrapper.get('[data-testid="generate-menu-toggle"]').trigger('click')
     await wrapper.get('[data-testid="generate"]').trigger('click')
     const dialog = wrapper.getComponent(GenerateLessonDialog)
 
@@ -128,6 +129,7 @@ describe('WorkspaceView', () => {
     const wrapper = mount(WorkspaceView, { props: { bookId: 'b1' } })
     await flushPromises()
 
+    await wrapper.get('[data-testid="generate-menu-toggle"]').trigger('click')
     await wrapper.get('[data-testid="batch-generate"]').trigger('click')
     wrapper.getComponent(BatchGenerateDialog).vm.$emit('start', [
       '第一课',