feat(contracts,db): naming settings, override fields and template versions (0032)

- settings.naming {movie, tv, variety, lockFileNameForBound}, default = MP templates;
  library section gains #naming anchor
- naming API schemas and Api.naming endpoints (variables, preview, templates, overrides)
- 0032: library_root.naming, media_entity.naming_override, naming_template_version
  (version 1 = upgraded v1 templates, 2 = MP default, fingerprint-deduplicated)

Co-Authored-By: Claude Opus 5.5 <[email protected]>

packages/contracts/src/instances.ts

@@ -27,6 +27,8 @@ export const LibraryRoot = EntityBase.extend({
   lastHealthAt: Timestamp.nullable(),
   healthDetail: JsonObject,
   notes: z.string().nullable(),
+  /** 库根级命名模板覆盖 {movie?, tv?, variety?}(见 settings NamingOverride);null = 不覆盖。经 PUT /library-roots/{id}/naming 修改 */
+  naming: JsonObject.nullable().optional(),
 });
 export type LibraryRoot = z.infer<typeof LibraryRoot>;
 export const LibraryRootCreate = LibraryRoot.pick({