Add daemon restart feature from settings (#18)

* Add daemon restart feature from settings

This adds the ability to restart a connected daemon from the settings page.
The feature includes:

- Backend: RestartDaemon command added to DaemonCommand enum
- Backend: New POST /api/v1/mesh/daemons/{id}/restart endpoint
- Backend: Daemon gracefully shuts down tasks and exits with code 42
  (can be used by process managers like systemd to detect restart requests)
- Frontend: restartDaemon() API function
- Frontend: Restart button in Connected Daemons section of settings
- Frontend: Confirmation dialog before restart to prevent accidental restarts

When a daemon receives the restart command, it:
1. Gracefully shuts down all running Claude processes (5s timeout)
2. Exits with code 42 to signal restart requested
3. The daemon can be restarted by a process manager or manually

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

1 files changed, 9 insertions, 0 deletions

diff --git a/makima/src/daemon/task/manager.rs b/makima/src/daemon/task/manager.rs
index 5eed0e8..a3e4732 100644
--- a/makima/src/daemon/task/manager.rs
+++ b/makima/src/daemon/task/manager.rs
@@ -1663,6 +1663,15 @@ impl TaskManager {
                 tracing::info!(source_dir = ?source_dir, "Inheriting git config");
                 self.handle_inherit_git_config(source_dir).await?;
             }
+            DaemonCommand::RestartDaemon => {
+                tracing::info!("Received restart command from server, initiating daemon restart...");
+                // Shutdown all running tasks gracefully
+                self.shutdown_all_processes(std::time::Duration::from_secs(5)).await;
+                // Exit the process - the daemon should be restarted by a process manager
+                // or the user can restart it manually
+                tracing::info!("Daemon restart: exiting process with code 42 (restart requested)");
+                std::process::exit(42);
+            }
         }
         Ok(())
     }