fix(terminal): close tab on process end and speed up long-press select - #2587

Greptile Summary

Consolidates terminal shutdown handling and makes touch selection more responsive.

• Routes process exits, unexpected socket closures, and socket errors through one idempotent tab-cleanup path.
• Distinguishes lifecycle text messages from binary terminal output and suppresses teardown noise after intentional closure.
• Reduces the default long-press selection delay from 600 ms to 400 ms.

Confidence Score: 5/5

The PR appears safe to merge.

No blocking failure remains.

Important Files Changed

Sequence Diagram

sequenceDiagram
    participant WS as WebSocket
    participant TC as TerminalComponent
    participant TM as TerminalManager
    participant Tab as Terminal Tab
    alt Exit control message
        WS->>TC: Text frame (type: exit)
        TC->>TM: onProcessExit(data)
    else Unexpected disconnect
        WS->>TC: close event
        TC->>TM: onDisconnect(info)
    else Socket error
        WS->>TC: error event
        TC->>TM: onError(error)
    end
    TM->>TM: finishTerminalSession()
    TM->>TC: dispose()
    TM->>Tab: remove()

_{Reviews (2): Last reviewed commit: "fix" | Re-trigger Greptile}

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