feat(identity): 识别接入集数解析——映射规则表、规范季集写回解析结果、待确认不建单元并开待处理、规则失效停用、按作品重算

迁移 0066_episode_mapping。

Co-Authored-By: Claude Opus 5.5 <[email protected]>
Claude-Session: https://claude.ai/code/session_01Cxwgnn2pbzQ7rXv3rq7fei

packages/contracts/src/index.ts

@@ -11,6 +11,7 @@ export * from "./classification.ts";
 export * from "./common.ts";
 export * from "./content.ts";
 export * from "./download-board.ts";
+export * from "./episode-mapping.ts";
 export * from "./events.ts";
 export * from "./execution.ts";
 export * from "./identity.ts";