Run script + CMD+R hotkey — start/stop project dev command per chat

[flazouh]

Problem

I want a "Run" command bound to CMD+R that runs my project's dev/run script (e.g. bun dev, pnpm dev) in the focused chat's worktree, so I can iterate without leaving Acepe.

Current behavior

• Keybinding registry: packages/desktop/src/lib/keybindings/bindings/defaults.ts:16-236 defines DEFAULT_KEYBINDINGS. No binding for $mod+r / "project.run" exists.
• Current $mod+ bindings include: t → THREAD_CREATE, w → THREAD_CLOSE, p → command palette, etc.
• Registration flow: KeybindingManager.registerKeybindings() (keybinding-manager.ts:53) calls keybindingsService.upsertAction(); handlers wired in separate methods (e.g. setThreadCreateHandler line 223).
• No Tauri global shortcuts are registered — all shortcuts are in-app via tinykeys.
• No "run project" infrastructure exists today (no Tauri command for running an arbitrary shell process, no UI pane for stdout/stderr of a run script).

Proposed change

1. Config

Extend .acepe.json schema + global Settings:

{
  "worktree": {
    "runCommand": "bun dev",          // single string, or
    "runCommands": ["bun dev"],       // array for composed setups
    "runCwd": "."                     // relative to worktree root
  }
}

Auto-detect from package.json scripts (prefer dev, start, serve in that order).

2. Hotkey

Add to defaults.ts:

{ key: "$mod+r", command: KEYBINDING_ACTIONS.PROJECT_RUN, when: "threadActive && !settingsOpen && !modalOpen" }

Register corresponding handler in KeybindingManager.

3. Execution

New Tauri command project_run_start(panel_id, cwd, command):

• Spawns the run command in the worktree cwd (or main repo cwd if no worktree).
• Reuses the env-allowlist machinery from worktree_config.rs:32-62.
• Streams stdout/stderr as Tauri events project:run-output tagged by panel_id.
• Tracks the child PID so project_run_stop(panel_id) can SIGTERM → SIGKILL it.

4. UI

• New "Run" pane attached to the agent panel (collapsible, like the terminal pane). Shows streaming output, status (running/stopped/crashed), exit code.
• Visual indicator in the panel header when a run is active.
• CMD+R toggles: starts if idle, no-ops / focuses pane if running. CMD+SHIFT+R restarts.
• Confirmation or idempotency check to avoid spawning duplicate processes.

5. Lifecycle

• Run processes attached to a panel should be SIGTERMed when the panel is closed.
• If the worktree is deleted (git worktree remove), the run process is stopped first.

Files to touch

• packages/desktop/src-tauri/src/git/worktree_config.rs:66-80 — schema.
• New: packages/desktop/src-tauri/src/project/run.rs (or similar) + wiring in lib.rs.
• packages/desktop/src/lib/keybindings/bindings/defaults.ts:16-236 + keybinding-manager.ts:53 — new binding + handler.
• packages/desktop/src/lib/acp/components/agent-panel/ — new Run pane + store.

Acceptance criteria

• CMD+R in a focused chat starts the project's run script in that chat's worktree.
• Output streams into a pane without blocking the UI.
• Closing the panel stops the run process.
• CMD+R is a no-op (or focuses the run pane) if already running; CMD+SHIFT+R restarts.
• Auto-detect from package.json scripts when no runCommand is configured.
• Errors surface clearly (non-zero exit, command not found, etc.).