fix(app): dismiss transient state across panes

[murongg]

Summary

• Dismiss the AI selection floating toolbar when a pointer starts outside the toolbar or its heading menu.
• Wire the app to hide that toolbar on outside clicks, including sidebars.
• Cancel file-tree create inputs when pointer focus leaves the file tree.

Why

• Issue [Editor]: 浮动工具栏不能自动收起 #379 reports that editor, left sidebar, and right/sidebar transient states do not consistently refresh each other.
• PR fix(app): improve file tree naming flow #380 already covers row navigation finishing file-tree naming inputs; this PR adds the remaining cross-pane outside-click behavior.

Validation

• pnpm --filter @markra/app test -- src/components/AiSelectionToolbar.test.tsx -t "dismisses when a pointer starts outside the toolbar" passed
• pnpm --filter @markra/app test -- src/components/MarkdownFileTreeDrawer.test.tsx -t "cancels create inputs when a pointer starts outside the file tree" passed
• pnpm --filter @markra/app test -- src/components/AiSelectionToolbar.test.tsx src/components/MarkdownFileTreeDrawer.test.tsx passed on rerun
• pnpm --filter @markra/app typecheck:test passed
• pnpm --filter @markra/app build passed

Related Issues

• Closes [Editor]: 浮动工具栏不能自动收起 #379

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Project	Deployment	Actions	Updated (UTC)
markra-web	Ready	Preview, Comment	Jun 22, 2026 10:40am