refactor: centralize cli manager cleanup

Co-authored-by: Nicholas Spisak <jsnsdirect@gmail.com>

src/cli/cli-utils.ts

@@ -0,0 +1,31 @@
+export type ManagerLookupResult<T> = {
+  manager: T | null;
+  error?: string;
+};
+
+export function formatErrorMessage(err: unknown): string {
+  return err instanceof Error ? err.message : String(err);
+}
+
+export async function withManager<T>(params: {
+  getManager: () => Promise<ManagerLookupResult<T>>;
+  onMissing: (error?: string) => void;
+  run: (manager: T) => Promise<void>;
+  close: (manager: T) => Promise<void>;
+  onCloseError?: (err: unknown) => void;
+}): Promise<void> {
+  const { manager, error } = await params.getManager();
+  if (!manager) {
+    params.onMissing(error);
+    return;
+  }
+  try {
+    await params.run(manager);
+  } finally {
+    try {
+      await params.close(manager);
+    } catch (err) {
+      params.onCloseError?.(err);
+    }
+  }
+}