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

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

packages/queue/src/factory.ts

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

packages/queue/src/index.ts

@@ -8,3 +8,4 @@ export {
 } from './queue.js';
 
 export { type QueueAdapter, type QueueConfig as QueueAdapterConfig } from './types.js';
+export { createQueueAdapter, registerQueueAdapter } from './factory.js';