feat(contracts): auto 配方契约 —— 确定的活由引擎按声明做,五个动词四种地址

配方是数据不是代码(ADR-004:不执行包代码即知包为何物),装进来可静态审、可回放。
只声明真实现了的那几式;嵌套两层封顶,没实现的形状 zod 当场拒。

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01LKMZDwMbyKzjw6Hembwvet

packages/contracts/src/index.ts

@@ -16,4 +16,5 @@ export * from './manifest.ts';
 export * from './org.ts';
 export * from './mail.ts';
 export * from './activity-ops.ts';
+export * from './auto-recipe.ts';
 export * from './api/index.ts';