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/par2_name_merge.spec.ts

@@ -48,7 +48,7 @@ test.group('Par2Merger / by file names', (group) => {
       ...file('Track One.flac', 100_060, 5, 'other <o@x>'),
     ])
     await store(file('Track Two.flac', 200_070, 24 * 60 + 10))
-    const ids = Object.fromEntries((await db.from('releases').select('id', 'name', 'poster', 'posted_at')).map((r) => [`${r.name}${r.poster.startsWith('other') ? ' (other)' : ''}${new Date(r.posted_at).getUTCDate() === 21 ? ' (later)' : ''}`, Number(r.id)]))
+    const ids = Object.fromEntries((await db.from('releases as r').leftJoin('posters as p', 'p.id', 'r.poster_id').select('r.id', 'r.name', 'p.poster', 'r.posted_at')).map((r) => [`${r.name}${r.poster.startsWith('other') ? ' (other)' : ''}${new Date(r.posted_at).getUTCDate() === 21 ? ' (later)' : ''}`, Number(r.id)]))
     const index = ids['Some.Album-WEB-2026']
     const setId = 'a'.repeat(32)
     await db.table('par2_files').multiInsert(
@@ -57,7 +57,7 @@ test.group('Par2Merger / by file names', (group) => {
     await db.table('par2_sets').insert({ set_id: setId, release_id: index, files: 3 })
 
     assert.equal(await new Par2Merger().mergeByName(setId), 3)
-    const left = (await db.from('releases').orderBy('name').select('name', 'files', 'poster')).map((r) => `${r.name} ${r.files}${r.poster.startsWith('other') ? ' (other)' : ''}`)
+    const left = (await db.from('releases as r').leftJoin('posters as p', 'p.id', 'r.poster_id').orderBy('r.name').select('r.name', 'r.files', 'p.poster')).map((r) => `${r.name} ${r.files}${r.poster.startsWith('other') ? ' (other)' : ''}`)
     assert.includeMembers(left, ['Another Song 1', 'Track One 1 (other)', 'Track Two 1'])
     assert.lengthOf(left, 4)
     const merged = await db.from('release_merges').where('via', 'name').count('* as n')