37 lines
2.1 KiB
Markdown
37 lines
2.1 KiB
Markdown
# 0010: Removing a panel detaches its session before termination
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Status: accepted for implementation.
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A workspace panel is a view attachment, not the lifetime owner of a PTY, agent,
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browser, or remote session. The normal remove action is therefore **Detach
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panel**. It removes the panel from the visible layout, keeps its stable pane and
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session identities, preserves output and decision state, and exposes the item in
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a Detached sessions tray. Reattaching it is a Configure-capability operation and
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must not launch a second process.
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Termination is a separate Execute-capability operation. It is presented as
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**Terminate session**, never as an ambiguous close icon, and will require a
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confirmation that names the process, target machine, and any dirty or waiting
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state. Detaching the selected panel chooses its next attached sibling, falling
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back to the previous sibling. A workspace retains at least one attached panel.
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The add affordance opens a chooser for Terminal, Browser, Markdown, Review, and
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Reattach running session. The deterministic comparison model still uses six
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seed fixtures and starts with five attached. The GPUI slice no longer inherits
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that fixture limit: Add Panel creates a new persistent panel identity beside the
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selection or reattaches the exact detached identity without relaunching it.
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The typed command plane retains detached pane definitions separately from the
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layout tree. `ClosePane(Detach)` moves a definition into that registry,
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`AttachPane` restores it without a launch intent, and `ClosePane(Terminate)`
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requires Execute authority whether the pane is attached or detached. The future
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runtime registry remains the process owner throughout these layout transitions.
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This interaction vocabulary was informed by behavior study of cmux at
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`fc36aea87e3b4152637597443d7aa7c22e4ec9f8` and Orca at
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`02a7742406a5a84fb372d6255d5a4367421990bd`. cmux is GPL-3.0-or-later and was
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used only to study workspace/split shortcuts and close-versus-detached process
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behavior. Orca is MIT-licensed and was used to study worktree-first navigation,
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durable terminal state, and mixed surface density. No implementation code or
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visual asset was copied from either project.
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