chore(shutdown): log CLI kill timeout

Log when Electron/Tauri force-kill the CLI during shutdown so orphaned instance reports are easier to diagnose.

packages/electron-app/electron/main/process-manager.ts

@@ -177,6 +177,9 @@ export class CliProcessManager extends EventEmitter {
 
     return new Promise((resolve) => {
       const killTimeout = setTimeout(() => {
+        console.warn(
+          `[cli] stop timed out after 30000ms; sending SIGKILL (pid=${child.pid ?? "unknown"})`,
+        )
         child.kill("SIGKILL")
       }, 30000)