voyager 3: the batch store writes releases once, by id references and bytea keys

Each release chunk is a release inserted once: release_key the SHA-1 of
the identity, the owner group and the first article (deterministic; no
numbering under a group lock), identity_key the identity's SHA-1 bytes,
poster_id and group_set_id through catalog_refs (cached per process),
source as a code (weak-stem added), the name into release_texts. A
finished release's candidates are claimable at once; a provisional tail
release is finished by a later chunk of its key, a finished one sent again
is left alone. Gone: joins into earlier releases and across groups, key
numbering, the group lock, the fragment merger. Interim: chunks, counts
and samples keyed by ranges.block_id, a range without a block gets one.

Readers follow: search (posters and group_sets joined, words through
release_texts, posters by id, source by code), the par2 merger, the
sidecar folder, the judge's scraped rule, the spot inspector, the spotter,
the NZB service, releases:regroup, edge:bench. Tests insert fixtures
through tests/functional/helpers/releases.ts; the suites pass again.

Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>

app/services/nzb_service.ts

@@ -2,6 +2,7 @@ import { gunzipSync } from 'node:zlib'
 import db from '@adonisjs/lucid/services/db'
 import { decodeChunk, type ChunkFile } from '#lib/chunks/index'
 import { buildNzb } from '#lib/nzb/index'
+import { SOURCES } from '#lib/release/source'
 
 /** Where a known password came from, the most trusted first: the spot's NZB meta, its title, its text. */
 const PASSWORD_SOURCES = ['nzb', 'spot-title', 'spot-text']
@@ -35,7 +36,7 @@ class NzbService {
     if (!release) return null
     const password = (await this.passwords(releaseId))[0]?.password
     // A release a spot made of its own (no files matched the header pass's): the spot's NZB as read.
-    if (release.source === 'spot') {
+    if (Number(release.source) === SOURCES.spot) {
       const spot = await db.from('spots').where('release_id', releaseId).whereNotNull('nzb').select('nzb').first()
       if (spot) return { name: release.name, xml: withPassword(gunzipSync(spot.nzb).toString('utf8'), password) }
     }