Rebuild: NZBs from the chunk store, and a catalog search

lib/nzb (buildNzb, parseNzb) from the current app; NzbService builds a
release's NZB from its chunks; GET /api/v1/releases?q= (every word of the
name) and GET /api/v1/releases/:id/nzb behind the api guard. A test stores
a batch, finds the release and reads its NZB back.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

.adonisjs/server/controllers.ts

@@ -8,4 +8,5 @@ export const controllers = {
   NewAccount: () => import('#controllers/new_account_controller'),
   Node: () => import('#controllers/node_controller'),
   Profile: () => import('#controllers/profile_controller'),
+  Releases: () => import('#controllers/releases_controller'),
 }