WIP: enhance ACP Chat queued messages and agentic workflow

[lulusir]

Types

• 🎉 New Features
• 💄 Style Changes
• ⏱ Tests

Background or solution

This PR improves the ACP Chat experience with queued follow-up messages and agentic workflow refinements.

When ACP Chat is generating a response, users can continue sending follow-up prompts. These messages are queued and automatically sent in FIFO order after the current turn completes. The queue UI supports expand/collapse, edit, delete, send next, and clear all actions.

This PR also improves the agentic chat layout by adding a dedicated panel header, workbench maximize/collapse controls, and menu bar integration for toggling the agentic workbench. File paths rendered in chat messages can now be opened directly in the editor, with the workbench restored and the file revealed in the explorer when possible.

Changelog

• Add queued message support for ACP Chat while a response is generating.
• Add queued message UI with edit, delete, send next, and clear all actions.
• Keep ACP input usable during loading so users can compose follow-up messages.
• Add agentic chat panel header and maximize/collapse action.
• Add agentic workbench visibility commands and layout service state.
• Wire the top menu bar toggle to agentic workbench visibility when available.
• Make chat-rendered file paths clickable and open them in the editor with range support.
• Improve generic tool call rendering for non-MCP tools.
• Add ACP agentic BDD scenarios and Playwright coverage.
• Add focused Jest coverage for queued messages, file links, panel layout, menu bar, and chat rendering.

[coderabbitai]

Caution

Review failed

The head commit changed during the review from 2940da3 to 0edf1eb.

✨ Finishing Touches

📝 Generate docstrings

• Create stacked PR
• Commit on current branch

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Commit unit tests in branch codex/optimize-acpchat-experience

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[codecov]

Codecov Report

❌ Patch coverage is 89.40810% with 34 lines in your changes missing coverage. Please review.
✅ Project coverage is 53.81%. Comparing base (a07b4ee) to head (58a3159).

Files with missing lines	Patch %	Lines
...kages/ai-native/src/browser/chat/acp-chat-agent.ts	6.25%	14 Missing and 1 partial ⚠️
...ges/ai-native/src/node/acp/acp-cli-back.service.ts	90.62%	5 Missing and 1 partial ⚠️
...ative/src/browser/chat/acp-chat-queued-messages.ts	88.23%	4 Missing ⚠️
.../browser/acp/permission-title-indicator.service.ts	95.45%	2 Missing ⚠️
...browser/layout/agentic-workbench-command-reveal.ts	93.10%	2 Missing ⚠️
...tive/src/browser/acp/acp-permission-rpc.service.ts	0.00%	1 Missing ⚠️
packages/ai-native/src/browser/acp/index.ts	0.00%	1 Missing ⚠️
packages/ai-native/src/browser/chat/chat-model.ts	92.85%	1 Missing ⚠️
...s/ai-native/src/browser/chat/pick-workspace-dir.ts	94.44%	1 Missing ⚠️
...ai-native/src/node/acp/acp-agent-update-adapter.ts	75.00%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #4763      +/-   ##
==========================================
+ Coverage   53.57%   53.81%   +0.23%     
==========================================
  Files        1753     1756       +3     
  Lines      111926   112220     +294     
  Branches    24817    24890      +73     
==========================================
+ Hits        59966    60388     +422     
+ Misses      43136    43022     -114     
+ Partials     8824     8810      -14     

Flag	Coverage Δ
jsdom	47.25% <67.28%> (+0.19%)	⬆️
node	13.76% <22.42%> (+0.02%)	⬆️

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[lulusir]

/next

[lulusir]

/next

[opensumi]

🎉 PR Next publish successful!

3.9.1-next-1783327199.0

[lulusir]

/next

[opensumi]

🎉 PR Next publish successful!

3.9.1-next-1783410798.0

[lulusir]

/next

[opensumi]

🎉 PR Next publish successful!

3.9.1-next-1783436180.0