feat: add adapter factory + registry pattern for queue, storage, memory

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

packages/storage/src/factory.ts

@@ -0,0 +1,18 @@
+import type { StorageAdapter, StorageConfig } from './types.js';
+
+type StorageType = StorageConfig['type'];
+
+const registry = new Map<StorageType, (config: StorageConfig) => StorageAdapter>();
+
+export function registerStorageAdapter(
+  type: StorageType,
+  factory: (config: StorageConfig) => StorageAdapter,
+): void {
+  registry.set(type, factory);
+}
+
+export function createStorageAdapter(config: StorageConfig): StorageAdapter {
+  const factory = registry.get(config.type);
+  if (!factory) throw new Error(`No adapter registered for type: ${config.type}`);
+  return factory(config);
+}

packages/storage/src/index.ts

@@ -1 +1,2 @@
 export type { StorageAdapter, StorageConfig } from './types.js';
+export { createStorageAdapter, registerStorageAdapter } from './factory.js';