fix(app): insert newline on Shift+Enter in AI inputs

[itsmunzir]

Summary

• Shift+Enter now inserts a newline in both AI inputs instead of submitting the prompt.
• Inline AI command bar (AiCommandBar): Shift+Enter is treated like the existing Ctrl+Enter newline gesture.
• Sidebar AI agent panel (AiAgentPanel): Shift+Enter returns early like Ctrl+Enter, so the textarea keeps its default newline insertion.

Relevant to #746. The issue also asks for a configurable send/newline scheme and for the sidebar agent to edit the document; those are separate, larger changes and are out of scope here.

Files changed

• packages/app/src/components/AiCommandBar.tsx — newline branch now checks event.ctrlKey || event.shiftKey.
• packages/app/src/components/AiCommandBar.test.tsx — added inserts a newline with Shift+Enter.
• packages/app/src/components/AiAgentPanel.tsx — submit suppression now checks event.ctrlKey || event.shiftKey.
• packages/app/src/components/AiAgentPanel.test.tsx — added a test that Shift+Enter does not submit and does not prevent the default newline.

Verification

• pnpm --filter @markra/app test src/components/AiCommandBar.test.tsx src/components/AiAgentPanel.test.tsx
  • Before: 2 failed (the new tests), after: 68 passed.
• pnpm run typecheck:test — passes.
• pnpm build — passes.
• Ctrl+Enter behavior is unchanged; only Shift+Enter is added. No visual/geometry change, so no screenshots.

Notes

• Existing IME guards and canSubmit gating are untouched.
• Follow-up: make the send/newline gestures configurable, as suggested in [Feature]: 建议添加输入框shift+回车换行，以及侧边栏AI更改文档 #746.

Refs #746

[vercel]

@itsmunzir is attempting to deploy a commit to the murongg's projects Team on Vercel.

A member of the Team first needs to authorize it.

[vercel]

The latest updates on your projects. Learn more about Vercel for GitHub.

Project	Deployment	Actions	Updated
markra-web	Ready	Preview	Sep 27, 2026 3:24pm UTC