Add execution control UI and inline messages

[yyy900]

Summary

• PipelineControl component: Stop button shown during agent execution, displays "Stopped" state
• Inline messages: typing during agent execution sends as inline message (like Claude Code interjection) instead of new prompt
• Wire pause/resume/stopExecution/sendInlineMessage/executionState through page → chat → input → SDK

Dependencies

• Add execution control and inline message support connectonion-ts#3 (TS SDK execution control)
• Add execution control, fix relay disconnections, IO inheritance connectonion#130 (Python execution_control plugin)

Test plan

• Stop button appears during agent processing
• Stop button sends EXECUTION_CONTROL stop message
• Typing during execution sends inline message, not new prompt
• Stop state shows "Stopped" text
• Button hidden when agent is idle

Note

package.json has connectonion pointed to local file:../openonion/connectonion-ts for dev. Change back to npm version before merging.

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Project	Deployment	Actions	Updated (UTC)
oo-chat	Error		Apr 20, 2026 1:19pm