feat: add computer control and managed browser

src/main/computer-control/deadline.ts

@@ -0,0 +1,49 @@
+import { cancellationFailure, ComputerControlFailure } from './errors'
+
+export const runWithDeadline = async <T>(
+  operation: (signal: AbortSignal) => Promise<T>,
+  parentSignal: AbortSignal,
+  deadlineMs: number,
+  timeoutCode: 'driver_timeout' | 'approval_timeout'
+): Promise<T> => {
+  if (parentSignal.aborted) {
+    throw cancellationFailure()
+  }
+
+  const controller = new AbortController()
+  let timedOut = false
+  const cancel = (): void => {
+    controller.abort(parentSignal.reason)
+  }
+  parentSignal.addEventListener('abort', cancel, { once: true })
+  const timeout = setTimeout(() => {
+    timedOut = true
+    controller.abort(new Error('Computer control deadline exceeded'))
+  }, deadlineMs)
+
+  try {
+    return await Promise.race([
+      operation(controller.signal),
+      new Promise<never>((_resolve, reject) => {
+        controller.signal.addEventListener(
+          'abort',
+          () => {
+            reject(
+              timedOut
+                ? new ComputerControlFailure(
+                    timeoutCode,
+                    'Computer control request timed out',
+                    true
+                  )
+                : cancellationFailure()
+            )
+          },
+          { once: true }
+        )
+      })
+    ])
+  } finally {
+    clearTimeout(timeout)
+    parentSignal.removeEventListener('abort', cancel)
+  }
+}