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>

tests/functional/seven_zip_tails.spec.ts

@@ -2,13 +2,14 @@ import { test } from '@japa/runner'
 import db from '@adonisjs/lucid/services/db'
 import testUtils from '@adonisjs/core/services/test_utils'
 import { pruneSevenZipTails } from '#services/seven_zip_tails'
+import { insertReleases } from '#tests/functional/helpers/releases'
 
 test.group('7z tails', (group) => {
   group.each.setup(() => testUtils.db().withGlobalTransaction())
 
   test("of a release's waiting tails, those below its highest volume go; the highest volume's all stay", async ({ assert }) => {
     const row = (key: string) => ({ release_key: key.padEnd(40, '0'), identity_key: key.padEnd(40, '0'), name: key, source: 'stem', groups: '[]', files: 4 })
-    const [merged, other] = (await db.table('releases').multiInsert([row('a'), row('b')]).returning('id')).map((r) => r.id)
+    const [merged, other] = await insertReleases([row('a'), row('b')])
     const tail = (releaseId: number, volume: string, mid: string, status = 'waiting') => ({ release_id: releaseId, kind: '7z-tail', message_id: mid, file: `x.7z.${volume}`, status })
     await db.table('probe_candidates').multiInsert([
       // Two merged members' tails, one of the highest volume probed already.