diff --git a/apps/desktop/src/renderer/features/editor/EditorToolbar.tsx b/apps/desktop/src/renderer/features/editor/EditorToolbar.tsx
index ce75801..b942567 100644
--- a/apps/desktop/src/renderer/features/editor/EditorToolbar.tsx
+++ b/apps/desktop/src/renderer/features/editor/EditorToolbar.tsx
@@ -20,6 +20,8 @@ export function EditorToolbar() {
       <T title="加粗 Ctrl+B" onClick={cmd(e => e.chain().focus().toggleBold().run())} disabled={d}>B</T>
       <T title="斜体 Ctrl+I" onClick={cmd(e => e.chain().focus().toggleItalic().run())} disabled={d}>I</T>
       <T title="删除线 Alt+Shift+5" onClick={cmd(e => e.chain().focus().toggleStrike().run())} disabled={d}>S</T>
+      <T title="行内代码 Ctrl+E" onClick={cmd(e => e.chain().focus().toggleCode().run())} disabled={d}><span style={{ fontFamily: 'monospace' }}>code</span></T>
+      <T title="清除格式" onClick={cmd(e => e.chain().focus().unsetAllMarks().run())} disabled={d}>T×</T>
       <T title="引用 Ctrl+Shift+Q" onClick={cmd(e => e.chain().focus().toggleBlockquote().run())} disabled={d}>❝</T>
       <span style={{ width: 1, background: '#333', height: 20, margin: '0 4px' }} />
       <T title="一级标题 Ctrl+1" onClick={cmd(e => e.chain().focus().toggleHeading({ level: 1 }).run())} disabled={d}>H1</T>
diff --git a/apps/desktop/tests/e2e/editor-inline.spec.ts b/apps/desktop/tests/e2e/editor-inline.spec.ts
new file mode 100644
index 0000000..1a6fa7b
--- /dev/null
+++ b/apps/desktop/tests/e2e/editor-inline.spec.ts
@@ -0,0 +1,69 @@
+import { test, expect } from '@playwright/test';
+import { _electron as electron } from 'playwright';
+import { promises as fs } from 'node:fs';
+import nodePath from 'node:path';
+import os from 'node:os';
+
+const MAIN_JS = nodePath.join(process.cwd(), 'dist-electron/main/index.js');
+
+async function launch(userData: string) {
+  const app = await electron.launch({ args: ['--user-data-dir=' + userData, MAIN_JS] });
+  const page = await app.firstWindow();
+  await page.waitForLoadState('domcontentloaded');
+  const invoke = (ch: string, args: any) => page.evaluate(({ ch, args }) => (globalThis as any).dsh.invoke(ch, args), { ch, args });
+  return { app, page, invoke };
+}
+
+// FR-E3 行内格式：加粗/斜体/删除线/行内代码/清除格式 工具栏按钮
+test('FR-E3：行内代码 + 清除格式 工具栏按钮生效', async () => {
+  const tmp = await fs.mkdtemp(nodePath.join(os.tmpdir(), 'hn-e3-'));
+  const userData = nodePath.join(tmp, 'userdata');
+  const vault = nodePath.join(tmp, 'vault');
+  await fs.mkdir(userData, { recursive: true });
+  await fs.mkdir(vault, { recursive: true });
+
+  const a = await launch(userData);
+  await a.invoke('vault:switch', { root: vault });
+
+  // 新建文档并打开
+  await a.page.getByRole('button', { name: /新建文档/ }).click();
+  await a.page.getByPlaceholder(/输入文档标题/).fill('行内格式');
+  await a.page.getByPlaceholder(/输入文档标题/).press('Enter');
+  await expect(a.page.getByTestId('tabbar').getByText('行内格式', { exact: true })).toBeVisible({ timeout: 10000 });
+
+  const editor = a.page.locator('.ProseMirror');
+  const html = () => a.page.evaluate(() => (document.querySelector('.ProseMirror') as HTMLElement)?.innerHTML ?? '');
+
+  // 输入文本
+  await editor.click();
+  await a.page.keyboard.type('hello world');
+
+  // 加粗 -> <strong>
+  await a.page.keyboard.press('Control+A');
+  await a.page.locator('button[title="加粗 Ctrl+B"]').click();
+  expect(await html()).toContain('<strong>');
+
+  // 清除格式 -> 移除 <strong>
+  await editor.click();
+  await a.page.keyboard.press('Control+A');
+  await a.page.locator('button[title="清除格式"]').click();
+  const afterClearBold = await html();
+  expect(afterClearBold).not.toContain('<strong>');
+  expect(afterClearBold).not.toContain('<code>');
+
+  // 行内代码 -> <code>
+  await editor.click();
+  await a.page.keyboard.press('Control+A');
+  await a.page.locator('button[title="行内代码 Ctrl+E"]').click();
+  expect(await html()).toContain('<code>');
+
+  // 清除格式 -> 移除 <code>
+  await editor.click();
+  await a.page.keyboard.press('Control+A');
+  await a.page.locator('button[title="清除格式"]').click();
+  const afterClearCode = await html();
+  expect(afterClearCode).not.toContain('<code>');
+  expect(afterClearCode).not.toContain('<strong>');
+
+  await a.app.close();
+});