feat(tui): delete current session

[kitlangton]

What

Add a Delete session command for the active V2 TUI session. It is available from the command palette and as /delete; the existing session_delete binding also makes Ctrl-D open the confirmation while viewing a session.

The confirmation starts on Confirm, so the full keyboard flow is Ctrl-D, then Enter. Escape cancels without deleting anything.

Before / After

Before: Deleting the active session required opening the session list, finding the current session, and pressing Ctrl-D twice.

After: The active session can be deleted in place. The TUI asks for confirmation, removes the session on the second keypress, and returns home through the existing session.deleted event flow.

How

• Register session.delete with the session route in packages/tui/src/routes/session/index.tsx.
• Reuse DialogConfirm for the destructive confirmation instead of introducing another dialog.
• Call the existing session removal API after confirmation and surface failures as an error toast.
• Leave successful navigation and notification handling to the existing session.deleted listener.

Testing

• bun typecheck in packages/tui
• bun run test in packages/tui (573 passed, 5 skipped)
• Push hook: workspace typecheck across 33 packages
• OpenCode Drive v1.4.1 against this worktree with required protocol negotiation: created one simulated session, pressed Ctrl-D, asserted the confirmation, pressed Enter, asserted the deleted-session toast, and verified the session API returned zero sessions

Demo

OpenCode Drive recording with a simulated model and isolated project. It shows Ctrl-D opening the confirmation and Enter deleting the session and returning home.

recording-0b03cce4-7519-4254-a2a5-0d4dd27d5319.mp4

Flow

flowchart LR
  A[Active session] -->|Ctrl-D, palette, or /delete| B[Delete confirmation]
  B -->|Escape or Cancel| A
  B -->|Enter on Confirm| C[Remove session]
  C -->|session.deleted| D[Home]
  C -->|API error| E[Error toast]

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