move automation out of core

apps/companion/main/automation/domain/errors/AutomationDomainError.ts

@@ -0,0 +1,19 @@
+import type { IDomainError } from '@core/shared/errors';
+
+/**
+ * Domain Error: AutomationDomainError
+ *
+ * Implements the shared IDomainError contract for automation domain failures.
+ */
+export class AutomationDomainError extends Error implements IDomainError {
+  readonly name = 'AutomationDomainError';
+  readonly type = 'domain' as const;
+  readonly context = 'automation';
+  readonly kind: string;
+
+  constructor(message: string, kind: string = 'validation') {
+    super(message);
+    this.kind = kind;
+    Object.setPrototypeOf(this, new.target.prototype);
+  }
+}