feat: add computer control and managed browser

src/main/computer-control/errors.ts

@@ -0,0 +1,31 @@
+import type {
+  ComputerControlError,
+  ComputerControlErrorCode
+} from '../../shared/computer-control-contracts'
+
+export class ComputerControlFailure extends Error {
+  readonly code: ComputerControlErrorCode
+  readonly retryable: boolean
+
+  constructor(
+    code: ComputerControlErrorCode,
+    message: string,
+    retryable = false
+  ) {
+    super(message)
+    this.name = 'ComputerControlFailure'
+    this.code = code
+    this.retryable = retryable
+  }
+
+  toContract(): ComputerControlError {
+    return {
+      code: this.code,
+      message: this.message.slice(0, 256) || 'Computer control failed',
+      retryable: this.retryable
+    }
+  }
+}
+
+export const cancellationFailure = (): ComputerControlFailure =>
+  new ComputerControlFailure('cancelled', 'Computer control was cancelled')