diff --git a/REBUILD.md b/REBUILD.md
index 694a94e..cd8fd02 100644
--- a/REBUILD.md
+++ b/REBUILD.md
@@ -472,6 +472,55 @@ releases, a third of them one poster's image dump (27.7 M rows, LOG.md
    verdicts, file hashes. Resets are paused (2026-10-12); this one waits
    for the user's go-ahead, and for the new NVMe.
 
+### Schema (built 2026-10-25; migrations 6000 and 6100)
+
+Migration 6000 *is* the reset: it truncates every table the indexing
+recomputes and refuses to run on a catalog with releases unless
+`VOYAGER3_RESET=1`, so merging `voyager-3` into `rebuild` is the go-ahead.
+Survives: `groups`, `ranges` (planned again from their start, with their
+priorities, `capture`, `est_date`, `stored_at`, `plain_chunks` and measured
+`posted_low/high`), the corpus, `probe_cache`, `spots` (unlinked from
+releases; the inspector matches them again), `nntp_shares`, `nodes`,
+`users`, the rule sets.
+
+- `releases`: created anew, 8-byte columns first: `id`, `posted_at`,
+  `last_posted_at`, `first_article`, `last_article`, `segments`, `bytes`,
+  `settled_at` (the finish; null while a tail release is provisional),
+  `inspected_at`, `first_seen_at`; `group_id`, `group_set_id`, `poster_id`,
+  `file_total`, `files`, `chunks`, `category`; `source smallint`
+  (`lib/release/source.ts`: 1 subject, 2 post, 3 stem, 4 spot, 5 nzb, 6
+  album); `readable`, `has_par2`, `complete`, `passworded`, `sidecar_only`,
+  `edge` (open at its block's end); `release_key` and `identity_key` as
+  20-byte `bytea`; `name`, `inner_name`. Gone: `poster`, `groups`,
+  `last_seen_at`. Indexes: pkey, release_key unique, (identity_key,
+  group_id), name and inner-name trigram, newest, (poster_id, newest),
+  passworded, `(group_id, identity_key) WHERE edge` for the block merger,
+  `id WHERE settled_at IS NULL` for the provisional ones. The category
+  trigger reads the groups from `group_sets`; the judge's dirty trigger
+  watches `poster_id` instead of `poster`.
+- `posters(id serial, poster unique)` with its trigram index;
+  `group_sets(id serial, groups jsonb unique)`, a sorted array of names.
+- `blocks` (6100): `group_id`, `start_id`, `end_id`, `next_id` (the resume
+  point), `posted_low/high`, `status`, `priority`, `node_id`, `attempts`,
+  `rule_version`, `headers`, `releases`, `leased_at`, `heartbeat_at`,
+  `done_at`, `error`; indexes todo (priority, id) and leased.
+  `ranges.block_id` points at the block; the ranges' own lease columns stay
+  until the leases move (then a migration drops them).
+- `release_chunks`, `rule_counts`, `rule_samples`: `range_id` → `block_id`.
+- Gone: `fragments`, `range_blocks`, `release_final()` (final = finished:
+  `settled_at IS NOT NULL`), the settler, the fragment merger,
+  `releases_category_newest_idx`.
+- `release_inspections` and `probe_candidates` on `CHUNK_TABLESPACE` (the
+  HDD) with their indexes. Note LOG.md 2026-10-19 (81): the judge's fake
+  rule read all of `release_inspections` every round, 17 min on the HDD;
+  the judge must read it by release or keep what it needs on the NVMe.
+
+Next: the batch store (write-once releases, posters and group sets by id,
+bytea keys, blocks), then the window and albums in the Rust edge, block
+leases and the block merger, the corpus replay harness. Until the batch
+store is done the 38 functional tests that write the old columns fail on
+`voyager-3`.
+
 ## Decisions
 
 a. Chunk payload: a write-once `bytea` table in Postgres, partitioned by
diff --git a/app/services/batch_store.ts b/app/services/batch_store.ts
index ef6c179..a6c9c8d 100644
--- a/app/services/batch_store.ts
+++ b/app/services/batch_store.ts
@@ -86,18 +86,6 @@ class BatchStore {
         })
       }
 
-      for (let i = 0; i < batch.fragments.length; i += 2000) {
-        const rows = batch.fragments.slice(i, i + 2000).map((f) => ({
-          range_id: rangeId,
-          file_key: f.fileKey,
-          // Not Math.min(...): a big file's fragment has more segments than the call stack takes arguments.
-          article_number: f.segments.reduce((min, s) => (s[3] < min ? s[3] : min), Infinity),
-          segments: f.segments.length,
-          fragment: JSON.stringify(f),
-        }))
-        await trx.insertQuery().table('fragments').multiInsert(rows)
-      }
-
       const moved = await trx
         .from('ranges')
         .where('id', rangeId)
diff --git a/app/services/fragment_merger.ts b/app/services/fragment_merger.ts
deleted file mode 100644
index 0d86cd9..0000000
--- a/app/services/fragment_merger.ts
+++ /dev/null
@@ -1,153 +0,0 @@
-import db from '@adonisjs/lucid/services/db'
-import BatchStore from '#services/batch_store'
-import ChunkPartitions from '#services/chunk_partitions'
-import RuleSets from '#services/rule_sets'
-import { RuleSet } from '#lib/rules/index'
-import { candidatesOf, chunkOf, mergeFragments, releaseKeyOf, uploadsOf, type Fragment, type ProbeCandidate, type ReleaseChunk } from '#lib/edge/index'
-import type { AggregatedFile } from '#lib/files/index'
-import type { EdgeSegment } from '#lib/edge/index'
-
-export interface MergeResult {
-  files: number
-  completed: number
-  incomplete: number
-  waiting: number
-  /** This round reached the end of the file keys (the next one starts over). */
-  wrapped: boolean
-}
-
-/** File keys per round. */
-const BATCH = 20_000
-
-/**
- * Files cut by a range's edge (REBUILD.md, fragments), put together once
- * the ranges around them are done: a complete file is judged by the rules
- * like any other and written as a release chunk (with probe candidates); a
- * file still missing parts while every neighbouring range is done is
- * incomplete, and dropped (counted on its ranges). Others wait.
- */
-class FragmentMerger {
-  /** Where the next round goes on: waiting files must not take every round's places. */
-  private cursor = ''
-
-  async run(): Promise<MergeResult> {
-    const result: MergeResult = { files: 0, completed: 0, incomplete: 0, waiting: 0, wrapped: false }
-    const { rows: keys } = await db.rawQuery(
-      `SELECT DISTINCT f.file_key FROM fragments f JOIN ranges r ON r.id = f.range_id
-       WHERE r.status = 'done' AND f.file_key > ? ORDER BY f.file_key LIMIT ?`,
-      [this.cursor, BATCH]
-    )
-    // At the end of the keys: the next round starts over.
-    result.wrapped = keys.length < BATCH
-    this.cursor = result.wrapped ? '' : keys.at(-1).file_key
-    if (keys.length === 0) return result
-    const rules = new RuleSet(await RuleSets.current())
-    const rows = await db
-      .from('fragments as f')
-      .join('ranges as r', 'r.id', 'f.range_id')
-      .whereIn('f.file_key', keys.map((k: { file_key: string }) => k.file_key))
-      .select('f.id', 'f.file_key', 'f.range_id', 'f.fragment', 'r.group_id', 'r.start_id', 'r.end_id', 'r.status')
-    const byKey = new Map<string, typeof rows>()
-    for (const row of rows) {
-      const list = byKey.get(row.file_key)
-      if (list) list.push(row)
-      else byKey.set(row.file_key, [row])
-    }
-
-    const completed: { file: AggregatedFile<EdgeSegment>; rangeId: number; ids: number[] }[] = []
-    const incomplete: { rangeId: number; ids: number[]; segments: number }[] = []
-    const neighbours = await this.neighbourStatus([...byKey.values()])
-    for (const list of byKey.values()) {
-      result.files++
-      const file = mergeFragments(list.map((r) => r.fragment as Fragment))
-      const ids = list.map((r) => Number(r.id))
-      const rangeId = Math.max(...list.map((r) => Number(r.range_id)))
-      if (file) {
-        completed.push({ file, rangeId, ids })
-        continue
-      }
-      if (list.every((r) => r.status === 'done') && neighbours(list)) {
-        incomplete.push({ rangeId, ids, segments: list.reduce((n, r) => n + (r.fragment as Fragment).segments.length, 0) })
-      } else {
-        result.waiting++
-      }
-    }
-
-    // Completed files, grouped into their releases, judged and written like a batch's.
-    const byRelease = new Map<string, { files: AggregatedFile<EdgeSegment>[]; rangeId: number }>()
-    for (const { file, rangeId } of completed) {
-      const key = releaseKeyOf(file.segments[0])
-      const entry = byRelease.get(key)
-      if (entry) entry.files.push(file)
-      else byRelease.set(key, { files: [file], rangeId })
-    }
-    const releases: { rangeId: number; chunk: ReleaseChunk; candidates: ProbeCandidate[] }[] = []
-    for (const [key, { files, rangeId }] of byRelease) {
-      const verdict = rules.judge(key, files.map((f) => ({ name: f.segments[0].file.name, totalParts: f.segments[0].totalParts, groups: f.segments[0].file.groups, firstMessageId: f.segments[0].messageId, poster: f.segments[0].file.poster })))
-      if (verdict.rule !== null) continue
-      uploadsOf(files).forEach((list, upload) => releases.push({ rangeId, chunk: chunkOf(key, list, upload), candidates: candidatesOf(key, list, upload) }))
-    }
-    await ChunkPartitions.ensure()
-    await db.transaction(async (trx) => {
-      // In key order (batches lock their group; the merger only ever waits on one batch at a time).
-      releases.sort((a, b) => a.chunk.key.localeCompare(b.chunk.key) || a.chunk.upload - b.chunk.upload)
-      for (const { rangeId, chunk, candidates } of releases) await BatchStore.writeReleases(trx, rangeId, 0, [chunk], candidates)
-      const done = [...completed.flatMap((c) => c.ids), ...incomplete.flatMap((c) => c.ids)]
-      for (let i = 0; i < done.length; i += 5000) await trx.from('fragments').whereIn('id', done.slice(i, i + 5000)).delete()
-      for (const { rangeId, segments } of incomplete) {
-        await trx.rawQuery(
-          `INSERT INTO rule_counts (range_id, rule, key, articles, files) VALUES (?, 'incomplete', 'edge', ?, 1)
-           ON CONFLICT (range_id, rule, key) DO UPDATE SET articles = rule_counts.articles + excluded.articles, files = rule_counts.files + 1`,
-          [rangeId, segments]
-        )
-      }
-    })
-    result.completed = completed.length
-    result.incomplete = incomplete.length
-    return result
-  }
-
-  /**
-   * For each file's fragments: whether the ranges right before and after
-   * their ranges (where a missing part could be) are done, read in one
-   * query for the whole round (per file it was three, ~2,000 files a
-   * minute). A neighbour not planned yet counts as not done (newer articles
-   * come later), except before the group's oldest article.
-   */
-  private async neighbourStatus(lists: { group_id: number; start_id: number | string; end_id: number | string }[][]) {
-    const span = (list: (typeof lists)[number]) => ({
-      group: Number(list[0].group_id),
-      first: Math.min(...list.map((r) => Number(r.start_id))),
-      last: Math.max(...list.map((r) => Number(r.end_id))),
-    })
-    const spans = lists.map(span)
-    const groups = [...new Set(spans.map((s) => s.group))]
-    // The range holding the article before and the one after, each by the (group_id, start_id) index:
-    // "end_id = ? OR start_id = ?" read every range of the group per file (5.5 s a round; LOG.md 2026-10-09).
-    const { rows } = await db.rawQuery(
-      `SELECT s.group_id, s.before_end, s.after_start, b.status AS before, a.status AS after
-       FROM unnest(?::int[], ?::bigint[], ?::bigint[]) AS s(group_id, before_end, after_start)
-       LEFT JOIN LATERAL (SELECT r.status FROM ranges r WHERE r.group_id = s.group_id AND r.start_id <= s.before_end AND r.end_id >= s.before_end
-                          ORDER BY r.start_id DESC LIMIT 1) b ON true
-       LEFT JOIN LATERAL (SELECT r.status FROM ranges r WHERE r.group_id = s.group_id AND r.start_id <= s.after_start AND r.end_id >= s.after_start
-                          ORDER BY r.start_id DESC LIMIT 1) a ON true`,
-      [spans.map((s) => s.group), spans.map((s) => s.first - 1), spans.map((s) => s.last + 1)]
-    )
-    const byEnd = new Map<string, string>()
-    const byStart = new Map<string, string>()
-    for (const r of rows) {
-      if (r.before !== null) byEnd.set(`${r.group_id}:${r.before_end}`, r.before)
-      if (r.after !== null) byStart.set(`${r.group_id}:${r.after_start}`, r.after)
-    }
-    const lows = new Map((await db.from('groups').whereIn('id', groups).select('id', 'low')).map((g) => [Number(g.id), g.low === null ? null : Number(g.low)]))
-    return (list: (typeof lists)[number]) => {
-      const { group, first, last } = span(list)
-      const before = byEnd.get(`${group}:${first - 1}`)
-      const low = lows.get(group)
-      const beforeDone = before !== undefined ? before === 'done' : low === null || low === undefined || first <= low
-      return beforeDone && byStart.get(`${group}:${last + 1}`) === 'done'
-    }
-  }
-}
-
-export default new FragmentMerger()
diff --git a/app/services/par2_pruner.ts b/app/services/par2_pruner.ts
index e440553..fabda38 100644
--- a/app/services/par2_pruner.ts
+++ b/app/services/par2_pruner.ts
@@ -75,7 +75,7 @@ export class Par2Pruner {
                   WHERE o.set_id = b.set_id AND v.release_id IS NULL) THEN 'judged'
            WHEN NOT EXISTS (SELECT 1 FROM par2_sets s WHERE s.set_id = b.set_id AND s.created_at > ?)
             AND NOT EXISTS (SELECT 1 FROM par2_sets s JOIN releases r ON r.id = s.release_id WHERE s.set_id = b.set_id AND (
-                  release_final(r.group_id, r.first_article, r.last_article, r.posted_at, r.last_posted_at, r.complete) IS NOT TRUE
+                  r.settled_at IS NULL
                   OR EXISTS (SELECT 1 FROM recent x WHERE x.group_id = r.group_id
                     AND x.posted_low <= coalesce(r.last_posted_at, r.posted_at) + interval '6 hours' AND x.posted_high >= r.posted_at - interval '6 hours')))
             AND NOT EXISTS (SELECT 1 FROM par2_files f JOIN unseen u ON u.hash16k = f.hash16k AND u.size = f.length WHERE f.set_id = b.set_id)
diff --git a/app/services/range_blocks.ts b/app/services/range_blocks.ts
deleted file mode 100644
index bc16831..0000000
--- a/app/services/range_blocks.ts
+++ /dev/null
@@ -1,31 +0,0 @@
-import db from '@adonisjs/lucid/services/db'
-
-/**
- * range_blocks (migration 3900): per group, each run of consecutive done ranges with its posting time span, read by
- * release_final(). A few thousand rows from ~650k ranges, rebuilt whole in one statement each time; a run breaks at a
- * range that isn't done or doesn't start where the one before ended.
- */
-class RangeBlocks {
-  async rebuild(): Promise<number> {
-    return db.transaction(async (trx) => {
-      await trx.rawQuery(`DELETE FROM range_blocks`)
-      const result = await trx.rawQuery(
-        `WITH r AS (
-           SELECT group_id, start_id, end_id, status = 'done' AS done, posted_low, posted_high,
-                  min(start_id) OVER (PARTITION BY group_id) AS group_first,
-                  lag(status = 'done') OVER w AS done_before, lag(end_id) OVER w AS end_before
-           FROM ranges WINDOW w AS (PARTITION BY group_id ORDER BY start_id)),
-         runs AS (
-           SELECT *, sum(CASE WHEN done IS DISTINCT FROM done_before OR end_before IS DISTINCT FROM start_id - 1 THEN 1 ELSE 0 END)
-                       OVER (PARTITION BY group_id ORDER BY start_id) AS run
-           FROM r)
-         INSERT INTO range_blocks (group_id, start_id, end_id, posted_low, posted_high, at_group_start)
-         SELECT group_id, min(start_id), max(end_id), min(posted_low), max(posted_high), min(start_id) = min(group_first)
-         FROM runs WHERE done GROUP BY group_id, run`
-      )
-      return result.rowCount ?? 0
-    })
-  }
-}
-
-export default new RangeBlocks()
diff --git a/app/services/release_judge.ts b/app/services/release_judge.ts
index 67ec2f8..f0b23e3 100644
--- a/app/services/release_judge.ts
+++ b/app/services/release_judge.ts
@@ -102,10 +102,10 @@ export const RULES: Rule[] = [
   {
     name: 'unusable',
     says: 'random names, no name inside, no par2 or inner-name merge, no spot, a day after settling, and final',
-    // Final (release_final): next to an unread range its par2 or the rest of its files may still come (LOG.md 2026-10-16 (67)).
+    // Finished (settled_at): a provisional tail release's par2 or the rest of its files may still come.
     sql: (scoped) => `SELECT r.id FROM releases r ${only(scoped, 'r.id')}
           WHERE r.settled_at < now() - interval '1 day' AND NOT r.readable AND r.inner_name IS NULL
-            AND release_final(r.group_id, r.first_article, r.last_article, r.posted_at, r.last_posted_at, r.complete)
+            AND r.settled_at IS NOT NULL
             AND NOT EXISTS (SELECT 1 FROM release_merges m WHERE m.into_id = r.id)
             AND NOT EXISTS (SELECT 1 FROM release_spots s WHERE s.release_id = r.id)
             AND NOT EXISTS (SELECT 1 FROM par2_sets p WHERE p.release_id = r.id)`,
diff --git a/app/services/search_service.ts b/app/services/search_service.ts
index d493212..9deb74d 100644
--- a/app/services/search_service.ts
+++ b/app/services/search_service.ts
@@ -51,7 +51,7 @@ export interface ReleaseSummary {
   size: number
   readable: boolean
   complete: boolean | null
-  /** The complete verdict is definite: done ranges cover the release's posting times and 6 hours either side (release_final). */
+  /** The complete verdict is definite: the release is finished (voyager 3: the window closed on it; a tail release is provisional until then). */
   final: boolean
   category: number
   settled: boolean
@@ -98,8 +98,8 @@ class SearchService {
     }
     if (params.readable) where.push('(r.readable OR r.inner_name IS NOT NULL)')
     if (params.complete) where.push('r.complete')
-    // Incomplete only when final: a release next to unread ranges may yet get its missing files (release_final).
-    if (params.notIncomplete) where.push('(r.complete IS NOT FALSE OR NOT release_final(r.group_id, r.first_article, r.last_article, r.posted_at, r.last_posted_at, r.complete))')
+    // Incomplete only when final: a provisional tail release may yet get its missing files.
+    if (params.notIncomplete) where.push('(r.complete IS NOT FALSE OR r.settled_at IS NULL)')
     if (params.unlocked) where.push('r.passworded IS NOT TRUE')
     if (params.source) {
       where.push('r.source = ?')
@@ -166,7 +166,7 @@ class SearchService {
       db.rawQuery(
         `SELECT r.id, r.name, r.source, r.poster, r.groups, r.posted_at, r.file_total, r.files, r.bytes, r.readable, r.complete, r.category, r.settled_at, r.passworded, r.inner_name,
                 EXISTS (SELECT 1 FROM release_passwords p WHERE p.release_id = r.id) AS password_known,
-                release_final(r.group_id, r.first_article, r.last_article, r.posted_at, r.last_posted_at, r.complete) AS final
+                r.settled_at IS NOT NULL AS final
          FROM ${source.from} WHERE ${source.where} ORDER BY ${order} LIMIT ? OFFSET ?`,
         [...source.bindings, ...bindings, perPage, offset]
       ),
@@ -205,10 +205,9 @@ class SearchService {
   async release(id: number) {
     const r = await db.from('releases').where('id', id).first()
     if (!r) return null
-    const [files, { rows: inspections }, { rows: finality }, passwords] = await Promise.all([
+    const [files, { rows: inspections }, passwords] = await Promise.all([
       NzbService.files(id),
       db.rawQuery(`SELECT kind, result, created_at FROM release_inspections WHERE release_id = ? ORDER BY candidate_id`, [id]),
-      db.rawQuery(`SELECT release_final(?, ?, ?, ?, ?, ?) AS final`, [r.group_id, r.first_article, r.last_article, r.posted_at, r.last_posted_at, r.complete]),
       NzbService.passwords(id),
     ])
     return {
@@ -224,7 +223,7 @@ class SearchService {
       segments: Number(r.segments),
       readable: r.readable,
       complete: r.complete,
-      final: finality[0].final,
+      final: r.settled_at !== null,
       hasPar2: r.has_par2,
       category: r.category,
       firstSeenAt: r.first_seen_at,
diff --git a/app/services/settler.ts b/app/services/settler.ts
deleted file mode 100644
index 38fcf79..0000000
--- a/app/services/settler.ts
+++ /dev/null
@@ -1,49 +0,0 @@
-import db from '@adonisjs/lucid/services/db'
-
-/** Releases unchanged for this long are settled (ranges are read in order; the merger adds within minutes). */
-const QUIET_HOURS = 6
-/**
- * History: a release whose last post is QUIET_HOURS old gets nothing new from the tail, only from the
- * neighbouring ranges' fragments, which the merger adds within minutes: settled once unchanged this long.
- * Waiting QUIET_HOURS after it was read held every history release back from phase 2 for six hours after
- * each reset (the hourly sweeps' resets kept the prober idle; LOG.md 2026-10-12 (13)).
- */
-const QUIET_HISTORY_MINUTES = 30
-const BATCH = 50_000
-
-/**
- * Settles releases (REBUILD.md, part 8): once nothing has been added for
- * QUIET_HOURS (QUIET_HISTORY_MINUTES once its last post is that old), its completeness is decided: complete when every file the
- * [i/N] counter announced was found, unknown without a counter (phase 2
- * decides those by their par2 sets: app/services/par2_completeness.ts).
- * Phase 2 picks its work from settled releases.
- */
-class Settler {
-  /** Up to `batches` batches of BATCH (all there are without). */
-  async run(batches = Infinity): Promise<number> {
-    let settled = 0
-    for (let batch = 0; batch < batches; batch++) {
-      // Their probe candidates become claimable (Prober.claim), the unreadable ones first.
-      const { rows } = await db.rawQuery(
-        `WITH settled AS (
-           UPDATE releases SET settled_at = now(), complete = CASE WHEN file_total IS NULL THEN complete ELSE files >= file_total END
-           WHERE id IN (SELECT id FROM releases WHERE settled_at IS NULL AND last_seen_at < now() - make_interval(mins => ?)
-             AND (last_seen_at < now() - make_interval(hours => ?) OR coalesce(last_posted_at, posted_at) < now() - make_interval(hours => ?)) LIMIT ?)
-           RETURNING id, readable, files, bytes, poster, sidecar_only),
-         marked AS (UPDATE probe_candidates pc SET ready = true, unreadable = NOT s.readable FROM settled s WHERE pc.release_id = s.id),
-         -- A small one of sidecars only (the batch store's sidecar_only) may be an upload's .nfo or .nzb that came apart
-         -- from it: the merger's sidecar fold looks at them.
-         queued AS (INSERT INTO fold_candidates (release_id) SELECT id FROM settled WHERE sidecar_only AND files <= 3 AND bytes < 1000000 AND poster IS NOT NULL
-           ON CONFLICT DO NOTHING)
-         SELECT count(*)::int AS n FROM settled`,
-        [QUIET_HISTORY_MINUTES, QUIET_HOURS, QUIET_HOURS, BATCH]
-      )
-      const n = rows[0].n
-      settled += n
-      if (n < BATCH) return settled
-    }
-    return settled
-  }
-}
-
-export default new Settler()
diff --git a/commands/coordinator_run.ts b/commands/coordinator_run.ts
index e8ecace..cce4e78 100644
--- a/commands/coordinator_run.ts
+++ b/commands/coordinator_run.ts
@@ -3,9 +3,6 @@ import type { CommandOptions } from '@adonisjs/core/types/ace'
 import { setTimeout as sleep } from 'node:timers/promises'
 import { Prefetcher } from '#services/prefetcher'
 import Planner from '#services/planner'
-import FragmentMerger from '#services/fragment_merger'
-import Settler from '#services/settler'
-import RangeBlocks from '#services/range_blocks'
 import Leases from '#services/leases'
 import NntpPool from '#services/nntp_pool'
 import { NntpShare } from '#services/nntp_shares'
@@ -13,38 +10,38 @@ import coordinatorConfig from '#config/coordinator'
 
 const TICK_MS = 2000
 const PLAN_EVERY_MS = 60 * 60 * 1000
-const MERGE_EVERY_MS = 60 * 1000
-const MERGE_BUDGET_MS = 30 * 1000
 const STOP_WAIT_MS = 15 * 1000
-/**
- * Settling in rounds of at most SETTLE_BATCHES batches every few minutes: once an hour, ~3M releases rewrote their
- * rows and index entries in one go (2.65M in 30 min), the NVMe saturated and the batch stores queued on their locks
- * (LOG.md 2026-10-16 (67)).
- */
-const SETTLE_EVERY_MS = 5 * 60 * 1000
-const SETTLE_BATCHES = 4
-/** range_blocks (release_final) after ranges finish. */
-const BLOCKS_EVERY_MS = 5 * 60 * 1000
+/** Leases whose worker went quiet after reading everything are finished every few minutes. */
+const ABANDONED_EVERY_MS = 5 * 60 * 1000
 
 /**
- * The coordinator's background work (REBUILD.md, part 1): the prefetcher,
- * merging fragments of finished ranges every minute, and every hour
- * planning ranges for new articles and settling quiet releases. The API (leases, stream,
- * batches) runs in the web server.
+ * The coordinator's background work (REBUILD.md, part 1): the prefetcher, the tail's ranges every few minutes,
+ * new groups' history every hour, and abandoned leases. The API (leases, stream, batches) runs in the web server.
+ * Voyager 3: the settler and the fragment merger are gone (the window finishes a release once; the block merger
+ * joins edge releases).
  */
 export default class CoordinatorRun extends BaseCommand {
   static commandName = 'coordinator:run'
   static description = 'Prefetches ranges into the spool and plans new ones'
   static options: CommandOptions = { startApp: true, staysAlive: true }
 
-  @flags.string({ description: 'This process\'s share of the prefetching, "i/n" (ranges with id % n = i - 1); only 1/n plans, merges and settles' })
+  @flags.string({
+    description:
+      'This process\'s share of the prefetching, "i/n" (ranges with id % n = i - 1); only 1/n plans, merges and settles',
+  })
   declare shard?: string
 
   async run() {
     const [index, count] = (this.shard ?? '1/1').split('/').map(Number)
-    if (!(count >= 1 && index >= 1 && index <= count)) throw new Error(`--shard: "i/n" with 1 <= i <= n, not "${this.shard}"`)
+    if (!(count >= 1 && index >= 1 && index <= count))
+      throw new Error(`--shard: "i/n" with 1 <= i <= n, not "${this.shard}"`)
     const prefetcher = new Prefetcher({ index: index - 1, count })
-    const share = new NntpShare(count > 1 ? `coordinator ${index}/${count}` : 'coordinator', coordinatorConfig.nntpShares.coordinatorPriority, coordinatorConfig.nntpMinConnections, coordinatorConfig.nntpConnections)
+    const share = new NntpShare(
+      count > 1 ? `coordinator ${index}/${count}` : 'coordinator',
+      coordinatorConfig.nntpShares.coordinatorPriority,
+      coordinatorConfig.nntpMinConnections,
+      coordinatorConfig.nntpConnections
+    )
     const main = index === 1
     let stopping = false
     let stopped: () => void
@@ -56,7 +53,11 @@ export default class CoordinatorRun extends BaseCommand {
       prefetcher.stop()
       await done
     })
-    this.logger.info(count > 1 ? `Coordinator started (shard ${index}/${count}${main ? '' : ', prefetching only'}).` : 'Coordinator started.')
+    this.logger.info(
+      count > 1
+        ? `Coordinator started (shard ${index}/${count}${main ? '' : ', prefetching only'}).`
+        : 'Coordinator started.'
+    )
     // The pool's size: its share of the account's connections, the prober the rest (app/services/nntp_shares.ts).
     // Before the first connection: until then it's NNTP_CONNECTIONS.
     const first = await NntpPool.share(share)
@@ -69,11 +70,16 @@ export default class CoordinatorRun extends BaseCommand {
         } catch (error: any) {
           this.logger.error(`NNTP share failed: ${error.message}`)
         }
-        for (let waited = 0; waited < coordinatorConfig.nntpShares.everyMs && !stopping; waited += TICK_MS) await sleep(TICK_MS)
+        for (
+          let waited = 0;
+          waited < coordinatorConfig.nntpShares.everyMs && !stopping;
+          waited += TICK_MS
+        )
+          await sleep(TICK_MS)
       }
     })()
-    // Two loops: the prefetcher's ticks don't wait for merging or planning (a merge round
-    // of up to MERGE_BUDGET_MS left the connections idle once their targets were fetched).
+    // The prefetcher's ticks in a loop of their own: planning doesn't hold them (a merge round of up to 30 s once
+    // left the connections idle once their targets were fetched).
     const prefetching = (async () => {
       while (!stopping) {
         try {
@@ -84,24 +90,24 @@ export default class CoordinatorRun extends BaseCommand {
         await sleep(TICK_MS)
       }
     })()
-    // range_blocks in a loop of its own: a settling or merging round doesn't hold release_final back.
-    const blocks = (async () => {
+    const abandoned = (async () => {
       while (main && !stopping) {
         try {
-          const abandoned = await Leases.finishAbandoned()
-          if (abandoned > 0) this.logger.info(`Finished ${abandoned} ranges read to their end whose worker went quiet.`)
-          await RangeBlocks.rebuild()
+          const finished = await Leases.finishAbandoned()
+          if (finished > 0)
+            this.logger.info(
+              `Finished ${finished} ranges read to their end whose worker went quiet.`
+            )
         } catch (error: any) {
-          this.logger.error(`Range blocks failed: ${error.message}`)
+          this.logger.error(`Finishing abandoned leases failed: ${error.message}`)
         }
-        for (let waited = 0; waited < BLOCKS_EVERY_MS && !stopping; waited += TICK_MS) await sleep(TICK_MS)
+        for (let waited = 0; waited < ABANDONED_EVERY_MS && !stopping; waited += TICK_MS)
+          await sleep(TICK_MS)
       }
     })()
     // History for new groups hourly; the tail every few minutes.
     let plannedAt = 0
     let tailedAt = 0
-    let mergedAt = 0
-    let settledAt = 0
     while (!stopping) {
       try {
         if (main && Date.now() - plannedAt >= PLAN_EVERY_MS) {
@@ -109,45 +115,22 @@ export default class CoordinatorRun extends BaseCommand {
           const { groups, ranges } = await Planner.planAll()
           if (ranges > 0) this.logger.info(`Planned ${ranges} ranges over ${groups} groups.`)
         }
-        if (main && Date.now() - settledAt >= SETTLE_EVERY_MS) {
-          settledAt = Date.now()
-          const settled = await Settler.run(SETTLE_BATCHES)
-          if (settled > 0) this.logger.info(`Settled ${settled} releases.`)
-        }
         if (main && Date.now() - tailedAt >= coordinatorConfig.tail.everySeconds * 1000) {
           tailedAt = Date.now()
           const { groups, ranges } = await Planner.planTail()
           if (ranges > 0) this.logger.info(`Tail: ${ranges} ranges for ${groups} groups.`)
         }
-        if (main && Date.now() - mergedAt >= MERGE_EVERY_MS) {
-          mergedAt = Date.now()
-          // Rounds until a whole pass over the file keys decides nothing more, or MERGE_BUDGET_MS.
-          // (Going on while only waiting files were left kept Postgres busy all the time.)
-          const totals = { completed: 0, incomplete: 0, waiting: 0 }
-          let decidedThisPass = 0
-          while (!stopping && Date.now() - mergedAt < MERGE_BUDGET_MS) {
-            const merged = await FragmentMerger.run()
-            totals.completed += merged.completed
-            totals.incomplete += merged.incomplete
-            totals.waiting = merged.waiting
-            decidedThisPass += merged.completed + merged.incomplete
-            if (merged.wrapped) {
-              if (decidedThisPass === 0) break
-              decidedThisPass = 0
-            }
-          }
-          if (totals.completed || totals.incomplete) this.logger.info(`Fragments: ${totals.completed} files completed, ${totals.incomplete} incomplete, ${totals.waiting} waiting.`)
-        }
       } catch (error: any) {
         this.logger.error(`Coordinator round failed: ${error.message}`)
       }
       await sleep(TICK_MS)
     }
-    await Promise.all([prefetching, blocks, sharing])
+    await Promise.all([prefetching, abandoned, sharing])
     // The chunks in flight, for at most STOP_WAIT_MS (a connection the server holds back can take minutes); then closed.
     const waitUntil = Date.now() + STOP_WAIT_MS
     while (prefetcher.active > 0 && Date.now() < waitUntil) await sleep(200)
-    if (prefetcher.active > 0) this.logger.info(`Closing ${prefetcher.active} connections still fetching.`)
+    if (prefetcher.active > 0)
+      this.logger.info(`Closing ${prefetcher.active} connections still fetching.`)
     await NntpPool.close()
     await share.leave().catch(() => {})
     this.logger.info('Coordinator stopped.')
diff --git a/database/migrations/1770000006000_voyager3_catalog.ts b/database/migrations/1770000006000_voyager3_catalog.ts
new file mode 100644
index 0000000..98f65a7
--- /dev/null
+++ b/database/migrations/1770000006000_voyager3_catalog.ts
@@ -0,0 +1,181 @@
+import { BaseSchema } from '@adonisjs/lucid/schema'
+import env from '#start/env'
+
+/**
+ * Voyager 3's catalog (REBUILD.md, "Voyager 3: window indexing", 4 and 7), built from a reset, not converted in
+ * place. This migration IS the reset: it empties every table the indexing recomputes (releases, chunks,
+ * inspections, candidates, par2 data, file hashes, verdicts, merges, rule counts and samples; what survives:
+ * groups, ranges, the corpus, probe_cache, spots, nntp_shares, nodes, users), so it refuses to run on a catalog
+ * with releases unless VOYAGER3_RESET=1 (the user's go-ahead; resets are paused since 2026-10-12). Then:
+ * - posters get an id; group_sets holds each distinct group combination once (~2,600); releases is created anew
+ *   without its text copies (poster_id, group_set_id, the keys as 20-byte bytea, source a smallint), 8-byte
+ *   columns first, with `edge` (still open at its block's end, for the block merger) and settled_at as the finish
+ *   (null: a tail release still provisional). The category and judge triggers follow the new columns;
+ *   releases_category_newest_idx (5.3 GB, used once) goes.
+ * - fragments and range_blocks go with the fragment merger and the settler (the window finishes a release once);
+ *   release_final() goes: a release is final once finished.
+ * - release_chunks, rule_counts and rule_samples are keyed by the block that wrote them (block_id; migration 6100).
+ * - release_inspections and probe_candidates move to CHUNK_TABLESPACE (the HDD) when set: written once, read per
+ *   release, not by search.
+ */
+export default class extends BaseSchema {
+  async up() {
+    this.defer(async (db) => {
+      const { rows } = await db.rawQuery(`SELECT count(*)::int AS n FROM releases`)
+      if (rows[0].n > 0 && process.env.VOYAGER3_RESET !== '1') {
+        throw new Error(
+          `The voyager 3 catalog migration empties the catalog (${rows[0].n} releases): run it with VOYAGER3_RESET=1 after the go-ahead`
+        )
+      }
+    })
+    this.schema.raw(`
+      TRUNCATE releases, release_chunks, release_inspections, probe_candidates, file_hashes, par2_files, par2_sets,
+        release_verdicts, release_merges, release_spots, release_passwords, rule_counts, rule_samples, judge_dirty,
+        judge_full, fold_candidates, posters, worker_cursors RESTART IDENTITY`)
+    // Spots matched to releases that are gone: the spot inspector matches them again.
+    this.schema.raw(`UPDATE spots SET release_id = NULL WHERE release_id IS NOT NULL`)
+    this.schema.raw(`UPDATE spot_files SET release_id = NULL WHERE release_id IS NOT NULL`)
+
+    this.schema.raw(`DROP TABLE IF EXISTS fragments`)
+    this.schema.raw(`DROP TABLE IF EXISTS range_blocks`)
+    this.schema.raw(
+      `DROP FUNCTION IF EXISTS release_final(integer, bigint, bigint, timestamptz, timestamptz, boolean)`
+    )
+    this.schema.raw(
+      `DROP FUNCTION IF EXISTS release_final(integer, bigint, bigint, timestamptz, timestamptz)`
+    )
+
+    // Posters by id (a release's poster_id); searched by trigram as before (poster_search).
+    this.schema.raw(`DROP TABLE IF EXISTS posters`)
+    this.schema.raw(`
+      CREATE TABLE posters (
+        id serial PRIMARY KEY,
+        poster text NOT NULL UNIQUE
+      )`)
+    this.schema.raw(`CREATE INDEX posters_trgm ON posters USING gin (poster gin_trgm_ops)`)
+    // Each distinct combination of groups a release was posted to, once: a sorted jsonb array of names.
+    this.schema.raw(`
+      CREATE TABLE group_sets (
+        id serial PRIMARY KEY,
+        groups jsonb NOT NULL UNIQUE
+      )`)
+
+    this.schema.raw(`DROP TABLE IF EXISTS releases CASCADE`)
+    this.schema.raw(`
+      CREATE TABLE releases (
+        id bigserial PRIMARY KEY,
+        -- The upload's posting window (first and last article's Date).
+        posted_at timestamptz,
+        last_posted_at timestamptz,
+        first_article bigint,
+        last_article bigint,
+        segments bigint NOT NULL DEFAULT 0,
+        bytes bigint NOT NULL DEFAULT 0,
+        -- The finish: the window closed on it (or the block ended); null while a tail release is provisional.
+        settled_at timestamptz,
+        inspected_at timestamptz,
+        first_seen_at timestamptz NOT NULL DEFAULT now(),
+        -- The owner group (null: a spot's release), the set of groups it was posted to, its poster.
+        group_id integer,
+        group_set_id integer NOT NULL,
+        poster_id integer,
+        file_total integer,
+        files integer NOT NULL DEFAULT 0,
+        chunks integer NOT NULL DEFAULT 0,
+        category integer,
+        -- lib/release/source.ts: 1 subject, 2 post, 3 stem, 4 spot, 5 nzb, 6 album.
+        source smallint NOT NULL,
+        readable boolean NOT NULL DEFAULT false,
+        has_par2 boolean NOT NULL DEFAULT false,
+        complete boolean,
+        passworded boolean,
+        sidecar_only boolean,
+        -- Still open when its block ended: the block merger joins it with the neighbour block's part by identity.
+        edge boolean NOT NULL DEFAULT false,
+        -- SHA-1s (lib/release/identity.ts): the identity (poster, name, group), and the release (identity and upload).
+        release_key bytea NOT NULL,
+        identity_key bytea NOT NULL,
+        name text NOT NULL,
+        inner_name varchar(255)
+      )`)
+    this.schema.raw(`CREATE UNIQUE INDEX releases_release_key_unique ON releases (release_key)`)
+    this.schema.raw(`CREATE INDEX releases_identity_idx ON releases (identity_key, group_id)`)
+    this.schema.raw(
+      `CREATE INDEX releases_name_trgm ON releases USING gin (name gin_trgm_ops) WITH (fastupdate = on, gin_pending_list_limit = 65536)`
+    )
+    this.schema.raw(
+      `CREATE INDEX releases_inner_name_trgm ON releases USING gin (inner_name gin_trgm_ops) WHERE inner_name IS NOT NULL`
+    )
+    this.schema.raw(
+      `CREATE INDEX releases_newest_idx ON releases (posted_at DESC NULLS LAST, id DESC)`
+    )
+    this.schema.raw(
+      `CREATE INDEX releases_poster_newest_idx ON releases (poster_id, posted_at DESC NULLS LAST, id DESC)`
+    )
+    this.schema.raw(`CREATE INDEX releases_passworded_idx ON releases (id) WHERE passworded`)
+    this.schema.raw(
+      `CREATE INDEX releases_edge_idx ON releases (group_id, identity_key) WHERE edge`
+    )
+    this.schema.raw(
+      `CREATE INDEX releases_provisional_idx ON releases (id) WHERE settled_at IS NULL`
+    )
+
+    // The category from the name, the inner name, or the groups (migration 5200), the groups now in group_sets.
+    this.schema.raw(`
+      CREATE OR REPLACE FUNCTION releases_set_category() RETURNS trigger LANGUAGE plpgsql AS $$
+      BEGIN
+        NEW.category := release_category_for(NEW.name, NEW.inner_name, (SELECT groups FROM group_sets WHERE id = NEW.group_set_id),
+                                             CASE WHEN TG_OP = 'UPDATE' THEN OLD.category ELSE NEW.category END);
+        RETURN NEW;
+      END $$`)
+    this.schema.raw(`
+      CREATE TRIGGER releases_category BEFORE INSERT OR UPDATE OF name, inner_name, group_set_id ON releases
+      FOR EACH ROW EXECUTE FUNCTION releases_set_category()`)
+    // The judge's dirty marks (migration 4900), on the columns its rules read.
+    this.schema.raw(`
+      CREATE TRIGGER judge_dirty_insert AFTER INSERT ON releases REFERENCING NEW TABLE AS new_rows
+      FOR EACH STATEMENT EXECUTE FUNCTION judge_dirty_releases()`)
+    this.schema.raw(`
+      CREATE TRIGGER judge_dirty_delete AFTER DELETE ON releases REFERENCING OLD TABLE AS old_rows
+      FOR EACH STATEMENT EXECUTE FUNCTION judge_dirty_releases()`)
+    this.schema.raw(`
+      CREATE TRIGGER judge_dirty_update AFTER UPDATE ON releases FOR EACH ROW
+      WHEN (old.name IS DISTINCT FROM new.name OR old.poster_id IS DISTINCT FROM new.poster_id OR old.source IS DISTINCT FROM new.source
+        OR old.file_total IS DISTINCT FROM new.file_total OR old.passworded IS DISTINCT FROM new.passworded
+        OR old.settled_at IS DISTINCT FROM new.settled_at OR old.readable IS DISTINCT FROM new.readable
+        OR old.inner_name IS DISTINCT FROM new.inner_name OR old.group_id IS DISTINCT FROM new.group_id
+        OR old.first_article IS DISTINCT FROM new.first_article OR old.last_article IS DISTINCT FROM new.last_article
+        OR old.posted_at IS DISTINCT FROM new.posted_at OR old.last_posted_at IS DISTINCT FROM new.last_posted_at
+        OR old.complete IS DISTINCT FROM new.complete)
+      EXECUTE FUNCTION judge_dirty_releases()`)
+
+    // Chunks, rule counts and samples by the block that wrote them.
+    this.schema.raw(`ALTER TABLE release_chunks RENAME COLUMN range_id TO block_id`)
+    this.schema.raw(
+      `ALTER INDEX IF EXISTS release_chunks_range_idx RENAME TO release_chunks_block_idx`
+    )
+    this.schema.raw(`ALTER TABLE rule_counts RENAME COLUMN range_id TO block_id`)
+    this.schema.raw(`ALTER TABLE rule_samples RENAME COLUMN range_id TO block_id`)
+    this.schema.raw(
+      `ALTER INDEX IF EXISTS rule_samples_range_id_index RENAME TO rule_samples_block_id_index`
+    )
+
+    // Cold tables to the HDD (CHUNK_TABLESPACE), with their indexes; empty now, so at once.
+    const hdd = env.get('CHUNK_TABLESPACE')
+    if (hdd) {
+      for (const table of ['release_inspections', 'probe_candidates']) {
+        this.schema.raw(`ALTER TABLE ${table} SET TABLESPACE ${hdd}`)
+        this.schema.raw(`
+          DO $$ DECLARE i record; BEGIN
+            FOR i IN SELECT indexname FROM pg_indexes WHERE schemaname = 'public' AND tablename = '${table}' LOOP
+              EXECUTE format('ALTER INDEX %I SET TABLESPACE %I', i.indexname, '${hdd}');
+            END LOOP;
+          END $$`)
+      }
+    }
+  }
+
+  async down() {
+    throw new Error('The voyager 3 catalog migration cannot be undone (it emptied the catalog)')
+  }
+}
diff --git a/database/migrations/1770000006100_blocks.ts b/database/migrations/1770000006100_blocks.ts
new file mode 100644
index 0000000..80f24c9
--- /dev/null
+++ b/database/migrations/1770000006100_blocks.ts
@@ -0,0 +1,61 @@
+import { BaseSchema } from '@adonisjs/lucid/schema'
+
+/**
+ * Blocks (REBUILD.md, "Voyager 3: window indexing", 1): what a worker leases. A block is a run of consecutive
+ * ranges of one group covering at least 30 days of posting time (planned from ranges.est_date and posted_low/high),
+ * read in article order through the 24 h window; blocks of a group run in parallel. Ranges stay the unit the
+ * prefetcher fetches (the spool, the corpus) and point at their block; the lease, resume point, heartbeat and
+ * counts move here. Part of the reset (migration 6000): every range is read again, from the corpus where stored.
+ */
+export default class extends BaseSchema {
+  async up() {
+    this.schema.raw(`
+      CREATE TABLE blocks (
+        id bigserial PRIMARY KEY,
+        group_id integer NOT NULL REFERENCES groups (id) ON DELETE CASCADE,
+        -- The first range's start and the last range's end.
+        start_id bigint NOT NULL,
+        end_id bigint NOT NULL,
+        -- The resume point: the first article not stored yet (batches are refused out of order, as ranges' were).
+        next_id bigint NOT NULL,
+        -- The posting time the block covers: estimated when planned, the worker's measured span once done.
+        posted_low timestamptz,
+        posted_high timestamptz,
+        -- planned, leased, done, failed.
+        status varchar(8) NOT NULL DEFAULT 'planned',
+        -- As ranges': the tail before everything, then the history by era.
+        priority integer NOT NULL DEFAULT 0,
+        node_id integer,
+        attempts integer NOT NULL DEFAULT 0,
+        rule_version integer,
+        headers bigint NOT NULL DEFAULT 0,
+        releases integer NOT NULL DEFAULT 0,
+        leased_at timestamptz,
+        heartbeat_at timestamptz,
+        done_at timestamptz,
+        error text,
+        created_at timestamptz NOT NULL DEFAULT now(),
+        UNIQUE (group_id, start_id)
+      )`)
+    this.schema.raw(
+      `CREATE INDEX blocks_todo_idx ON blocks (priority, id) WHERE status IN ('planned', 'leased')`
+    )
+    this.schema.raw(`CREATE INDEX blocks_leased_idx ON blocks (leased_at) WHERE status = 'leased'`)
+    this.schema.raw(
+      `ALTER TABLE ranges ADD COLUMN IF NOT EXISTS block_id bigint REFERENCES blocks (id) ON DELETE SET NULL`
+    )
+    this.schema.raw(`CREATE INDEX IF NOT EXISTS ranges_block_idx ON ranges (block_id)`)
+    // The reset: every range planned again from its start (the corpus serves the stored ones). Priorities, capture,
+    // est_date, stored_at, plain_chunks and the measured posted_low/high stay.
+    this.schema.raw(`
+      UPDATE ranges SET status = 'planned', next_id = start_id, node_id = NULL, attempts = 0, spooled_chunks = 0,
+        spooled_at = NULL, leased_at = NULL, heartbeat_at = NULL, done_at = NULL, headers = 0, error = NULL,
+        rule_version = NULL
+      WHERE status <> 'planned' OR next_id <> start_id OR spooled_chunks <> 0 OR node_id IS NOT NULL`)
+  }
+
+  async down() {
+    this.schema.raw(`ALTER TABLE ranges DROP COLUMN IF EXISTS block_id`)
+    this.schema.raw(`DROP TABLE IF EXISTS blocks`)
+  }
+}
diff --git a/lib/release/source.ts b/lib/release/source.ts
new file mode 100644
index 0000000..f8d11fb
--- /dev/null
+++ b/lib/release/source.ts
@@ -0,0 +1,36 @@
+/**
+ * How a release got its name, as releases.source stores it (a smallint; voyager 3, migration 6000). The names are
+ * what the edge, the spot inspector and the API use; the numbers never change meaning once written.
+ */
+export const SOURCES = {
+  /** A name the subject announces ("name" yEnc (k/N)). */
+  subject: 1,
+  /** The post's files, named after the first file (no release name in the subject). */
+  post: 2,
+  /** The files' shared stem. */
+  stem: 3,
+  /** A Spotnet spot's files that matched no release. */
+  spot: 4,
+  /** An NZB's files. */
+  nzb: 5,
+  /** One poster's files that differ only by a number sequence, or share a prefix (voyager 3). */
+  album: 6,
+} as const
+
+export type Source = keyof typeof SOURCES
+
+const NAMES = Object.fromEntries(
+  Object.entries(SOURCES).map(([name, code]) => [code, name])
+) as Record<number, Source>
+
+/** The code of a source name; throws for an unknown one (a typo would write a wrong number for good). */
+export function sourceCode(name: string): number {
+  const code = SOURCES[name as Source]
+  if (code === undefined) throw new Error(`Unknown release source "${name}"`)
+  return code
+}
+
+/** The name of a stored code; "unknown" for one not listed (never written, but a row might be read by an older build). */
+export function sourceName(code: number | string | null | undefined): Source | 'unknown' {
+  return NAMES[Number(code)] ?? 'unknown'
+}
diff --git a/tests/functional/final_completeness.spec.ts b/tests/functional/final_completeness.spec.ts
deleted file mode 100644
index d586045..0000000
--- a/tests/functional/final_completeness.spec.ts
+++ /dev/null
@@ -1,95 +0,0 @@
-import { test } from '@japa/runner'
-import db from '@adonisjs/lucid/services/db'
-import testUtils from '@adonisjs/core/services/test_utils'
-import BatchStore from '#services/batch_store'
-import RangeBlocks from '#services/range_blocks'
-import SearchService from '#services/search_service'
-import { RangeIndexer, postedSpan } from '#lib/edge/index'
-import { DEFAULT_RULES } from '#lib/rules/index'
-import type { Overview } from '#lib/nntp/index'
-
-const GROUP = 'alt.binaries.final'
-const at = (iso: string) => new Date(iso)
-
-test.group('Final completeness', (group) => {
-  group.each.setup(() => testUtils.db().withGlobalTransaction())
-
-  test("a batch's posting times, without the earliest and latest 1%, become the range's span", async ({ assert }) => {
-    assert.deepEqual(postedSpan([]), [null, null])
-    const dates = Array.from({ length: 200 }, (_, i) => 1_000_000 + i)
-    dates.push(5, 9_999_999_999)
-    // 202 dates: 2 trimmed at each end, so the two wild ones go.
-    assert.deepEqual(postedSpan(dates), [1_000_001, 1_000_198])
-
-    const [g] = await db.table('groups').insert({ name: GROUP, priority: 1 }).returning('id')
-    const [node] = await db.table('nodes').insert({ name: 'final-node' }).returning('id')
-    const [range] = await db
-      .table('ranges')
-      .insert({ group_id: g.id, start_id: 1, end_id: 1000, next_id: 1, status: 'leased', node_id: node.id, rule_version: 1 })
-      .returning('id')
-    const overviews = Array.from({ length: 10 }, (_, i) => {
-      const date = new Date(Date.parse('2026-01-01T10:00:00Z') + i * 60_000).toUTCString().replace('GMT', '+0000')
-      return [1 + i, { 'subject': `[1/1] - "Some.Thing.2026.rar" yEnc (${i + 1}/10)`, 'from': 'p <p@x>', 'date': date, 'message-id': `<f${i}@x>`, ':bytes': '1000', 'xref': `x ${GROUP}:${1 + i}` }] as Overview
-    })
-    const ix = new RangeIndexer({ group: GROUP, start: 1, end: 1000, rules: { ...DEFAULT_RULES, samplePercent: 0, droppedSignatures: [], priorities: { [GROUP]: 1 } } })
-    ix.add(overviews, 11)
-    await BatchStore.store(Number(range.id), Number(node.id), ix.take())
-    const stored = await db.from('ranges').where('id', range.id).firstOrFail()
-    assert.equal(new Date(stored.posted_low).toISOString(), '2026-01-01T10:00:00.000Z')
-    assert.equal(new Date(stored.posted_high).toISOString(), '2026-01-01T10:09:00.000Z')
-  })
-
-  test('a release is final once one block of done ranges covers its posting times and 6 hours either side', async ({ assert }) => {
-    const [g] = await db.table('groups').insert({ name: GROUP, priority: 1 }).returning('id')
-    const range = (start: number, status: string, low: string | null, high: string | null) =>
-      db.table('ranges').insert({ group_id: g.id, start_id: start, end_id: start + 99_999, next_id: start, status, posted_low: low && at(low), posted_high: high && at(high) })
-    await range(1, 'done', '2026-01-01T00:00:00Z', '2026-01-01T12:00:00Z')
-    await range(100_001, 'done', '2026-01-01T12:00:00Z', '2026-01-01T23:00:00Z')
-    await range(200_001, 'planned', null, null)
-    await range(300_001, 'done', '2026-01-02T10:00:00Z', '2026-01-02T20:00:00Z')
-    assert.equal(await RangeBlocks.rebuild(), 2)
-
-    let n = 0
-    const release = async (first: number, posted: string, extra: Record<string, unknown> = {}) => {
-      n++
-      const key = `fc${n}`.padEnd(40, '0')
-      const [row] = await db
-        .table('releases')
-        .insert({ release_key: key, identity_key: key, name: `Final.Test.${n}`, source: 'stem', groups: '[]', group_id: g.id, files: 3, file_total: 5, complete: false, first_article: first, last_article: first + 10, posted_at: at(posted), last_posted_at: at(posted), readable: true, settled_at: new Date(), ...extra })
-        .returning('id')
-      return Number(row.id)
-    }
-    const final = async (id: number) => {
-      const r = await db.from('releases').where('id', id).firstOrFail()
-      const { rows } = await db.rawQuery(`SELECT release_final(?, ?, ?, ?, ?, ?) AS final`, [r.group_id, r.first_article, r.last_article, r.posted_at, r.last_posted_at, r.complete])
-      return rows[0].final as boolean
-    }
-
-    // Mid-block: final either way.
-    const middle = await release(90_000, '2026-01-01T11:00:00Z')
-    // In the first range: nothing older to wait for, although 6 hours before it isn't covered.
-    const first = await release(1_000, '2026-01-01T02:00:00Z')
-    // Near the block's end, the next range unread: its missing files may be there.
-    const edge = await release(195_000, '2026-01-01T22:00:00Z')
-    // In the island after the gap: the gap is before it.
-    const island = await release(310_000, '2026-01-02T12:00:00Z')
-    assert.isTrue(await final(middle))
-    assert.isTrue(await final(first))
-    assert.isFalse(await final(edge))
-    // Complete there: every file found, nothing to wait for.
-    assert.isTrue(await final(await release(196_000, '2026-01-01T22:30:00Z', { files: 5, complete: true, name: 'Complete.Edge' })))
-    assert.isFalse(await final(island))
-
-    // Search: an incomplete release that isn't final isn't left out as incomplete; the API says which is final.
-    const shown = await SearchService.search({ q: 'Final.Test', notIncomplete: true })
-    assert.sameMembers(shown.releases.map((r) => r.id), [edge, island])
-    assert.isTrue(shown.releases.every((r) => r.final === false))
-
-    // The gap read: one block, the edge release final (the island's 12:00 + 6 h is inside 20:00).
-    await db.from('ranges').where('start_id', 200_001).update({ status: 'done', posted_low: at('2026-01-01T23:00:00Z'), posted_high: at('2026-01-02T10:00:00Z') })
-    assert.equal(await RangeBlocks.rebuild(), 1)
-    assert.isTrue(await final(edge))
-    assert.isTrue(await final(island))
-    assert.equal((await SearchService.search({ q: 'Final.Test', notIncomplete: true })).total, 0)
-  })
-})
diff --git a/tests/functional/fragment_merger.spec.ts b/tests/functional/fragment_merger.spec.ts
deleted file mode 100644
index 9bc2e20..0000000
--- a/tests/functional/fragment_merger.spec.ts
+++ /dev/null
@@ -1,65 +0,0 @@
-import { test } from '@japa/runner'
-import db from '@adonisjs/lucid/services/db'
-import testUtils from '@adonisjs/core/services/test_utils'
-import BatchStore from '#services/batch_store'
-import FragmentMerger from '#services/fragment_merger'
-import { RangeIndexer } from '#lib/edge/index'
-import { decodeChunk } from '#lib/chunks/index'
-import { DEFAULT_RULES } from '#lib/rules/index'
-import type { Overview } from '#lib/nntp/index'
-
-const GROUP = 'alt.binaries.test'
-const rules = { ...DEFAULT_RULES, samplePercent: 0, droppedSignatures: [], priorities: { [GROUP]: 1 } }
-
-function parts(name: string, total: number, numbers: number[], at: number): Overview[] {
-  return numbers.map((n, i) => [at + i, {
-    'subject': `Big.Upload.2020 [1/1] - "${name}" yEnc (${n}/${total})`, 'from': 'p <p@x>', 'date': 'Mon, 05 Oct 2026 10:00:00 +0000',
-    'message-id': `<${name}-${n}@test>`, ':bytes': '700000', 'xref': `news.example ${GROUP}:${at + i}`,
-  }] as Overview)
-}
-
-/** Indexes one range's overviews and stores them as the range's only batch; the range ends done. */
-async function indexRange(groupId: number, nodeId: number, start: number, end: number, overviews: Overview[]) {
-  const [r] = await db.table('ranges').insert({ group_id: groupId, start_id: start, end_id: end, next_id: start, status: 'leased', node_id: nodeId }).returning('id')
-  const indexer = new RangeIndexer({ group: GROUP, start, end, rules, edgeArticles: 100 })
-  indexer.add(overviews, end + 1)
-  indexer.finish()
-  await BatchStore.store(Number(r.id), nodeId, indexer.take())
-  await db.from('ranges').where('id', r.id).update({ status: 'done' })
-  return Number(r.id)
-}
-
-test.group('FragmentMerger', (group) => {
-  group.each.setup(() => testUtils.db().withGlobalTransaction())
-
-  test('a file cut by a range edge is completed from both sides once both ranges are done', async ({ assert }) => {
-    const [g] = await db.table('groups').insert({ name: GROUP, priority: 1, low: 1 }).returning('id')
-    const [n] = await db.table('nodes').insert({ name: 'merge-node' }).returning('id')
-    // Parts 1–2 at the end of the first range (still open there), 3–4 at the start of the next.
-    await indexRange(g.id, n.id, 1, 1000, parts('big.part1.rar', 4, [1, 2], 990))
-    assert.equal((await db.from('fragments').count('* as c'))[0].c, '1')
-    assert.include(await FragmentMerger.run(), { completed: 0, incomplete: 0, waiting: 1 })
-
-    await indexRange(g.id, n.id, 1001, 2000, parts('big.part1.rar', 4, [3, 4], 1001))
-    assert.include(await FragmentMerger.run(), { completed: 1, incomplete: 0 })
-    assert.equal((await db.from('fragments').count('* as c'))[0].c, '0')
-    const release = await db.from('releases').first()
-    assert.include(release, { files: 1, chunks: 1 })
-    const chunk = await db.from('release_chunks').where('release_id', release.id).first()
-    assert.deepEqual(decodeChunk(chunk.payload)[0].segments.map((s) => s[0]), [1, 2, 3, 4])
-    assert.deepEqual((await db.from('probe_candidates')).map((c) => c.kind), ['archive'])
-  })
-
-  test('a file still missing parts when all its neighbours are done is dropped', async ({ assert }) => {
-    const [g] = await db.table('groups').insert({ name: GROUP, priority: 1, low: 1 }).returning('id')
-    const [n] = await db.table('nodes').insert({ name: 'merge-node' }).returning('id')
-    await indexRange(g.id, n.id, 1, 1000, parts('gap.part1.rar', 5, [1, 2], 990))
-    await indexRange(g.id, n.id, 1001, 2000, parts('gap.part1.rar', 5, [4, 5], 1001))
-    // Its later neighbour isn't there yet: the missing part could still come.
-    assert.include(await FragmentMerger.run(), { completed: 0, incomplete: 0, waiting: 1 })
-    await indexRange(g.id, n.id, 2001, 3000, [])
-    assert.include(await FragmentMerger.run(), { completed: 0, incomplete: 1 })
-    assert.equal((await db.from('fragments').count('* as c'))[0].c, '0')
-    assert.lengthOf(await db.from('releases'), 0)
-  })
-})
diff --git a/tests/functional/release_judge.spec.ts b/tests/functional/release_judge.spec.ts
index de02bd1..ba22011 100644
--- a/tests/functional/release_judge.spec.ts
+++ b/tests/functional/release_judge.spec.ts
@@ -3,12 +3,13 @@ import db from '@adonisjs/lucid/services/db'
 import testUtils from '@adonisjs/core/services/test_utils'
 import { ReleaseJudge } from '#services/release_judge'
 import SearchService from '#services/search_service'
-import RangeBlocks from '#services/range_blocks'
 
 test.group('ReleaseJudge', (group) => {
   group.each.setup(() => testUtils.db().withGlobalTransaction())
 
-  test('judges dead, fake, repeated, locked and unusable releases, and takes a verdict back', async ({ assert }) => {
+  test('judges dead, fake, repeated, locked and unusable releases, and takes a verdict back', async ({
+    assert,
+  }) => {
     let n = 0
     const settled = new Date(Date.now() - 3 * 86400_000)
     const release = async (name: string, extra: Record<string, unknown> = {}) => {
@@ -16,19 +17,40 @@ test.group('ReleaseJudge', (group) => {
       const key = `jj${String(n).padStart(6, '0')}`.padEnd(40, '0')
       const [row] = await db
         .table('releases')
-        .insert({ release_key: key, identity_key: key, name, source: 'stem', groups: '[]', group_id: 1, files: 3, posted_at: settled, readable: true, settled_at: settled, ...extra })
+        .insert({
+          release_key: key,
+          identity_key: key,
+          name,
+          source: 'stem',
+          groups: '[]',
+          group_id: 1,
+          files: 3,
+          posted_at: settled,
+          readable: true,
+          settled_at: settled,
+          ...extra,
+        })
         .returning('id')
       return Number(row.id)
     }
     let candidate = 9000
     const probe = async (releaseId: number, status: string) => {
       candidate++
-      await db.table('probe_candidates').insert({ id: candidate, release_id: releaseId, kind: 'lone', message_id: `<${candidate}@x>`, file: 'x', status })
+      await db.table('probe_candidates').insert({
+        id: candidate,
+        release_id: releaseId,
+        kind: 'lone',
+        message_id: `<${candidate}@x>`,
+        file: 'x',
+        status,
+      })
       return candidate
     }
     const inspect = async (releaseId: number, kind: string, result: Record<string, unknown>) => {
       const id = await probe(releaseId, 'done')
-      await db.table('release_inspections').insert({ release_id: releaseId, candidate_id: id, kind, result: JSON.stringify(result) })
+      await db
+        .table('release_inspections')
+        .insert({ release_id: releaseId, candidate_id: id, kind, result: JSON.stringify(result) })
     }
 
     const dead = await release('Gone.Movie.2020.1080p')
@@ -39,7 +61,11 @@ test.group('ReleaseJudge', (group) => {
     await probe(halfDead, 'done')
 
     const fakeArchive = await release('Das.A-Team.S02E23.Das.Spiel.ist.aus')
-    await inspect(fakeArchive, 'archive', { type: 'rar4', names: ['Das.A-Team.S02E23.Das.Spiel.ist.aus.exe'], entries: 1 })
+    await inspect(fakeArchive, 'archive', {
+      type: 'rar4',
+      names: ['Das.A-Team.S02E23.Das.Spiel.ist.aus.exe'],
+      entries: 1,
+    })
     const fakeFile = await release('Some.Film.2021.1080p.WEB-DL')
     // Only "H.264" and "WEB-DL" say it's media here (a "?" in the pattern never matched).
     const fakeCodec = await release('Some.Show.H.264.WEB-DL')
@@ -54,34 +80,71 @@ test.group('ReleaseJudge', (group) => {
     for (let i = 0; i < 20; i++) {
       const id = await release(`kantodo${i}`)
       repeatedIds.push(id)
-      await db.table('file_hashes').insert({ candidate_id: 20000 + i, release_id: id, hash16k: hash, size: 1073741824 })
+      await db
+        .table('file_hashes')
+        .insert({ candidate_id: 20000 + i, release_id: id, hash16k: hash, size: 1073741824 })
     }
 
-    const scraped = await release('Jamie Lee Curtis Nude Celebrity Pictures', { poster: '@_CelebMovie_@', source: 'subject' })
-    const celeborn = await release('Some.Album.2010', { poster: 'celeborn@not.here (Celeborn)', source: 'subject' })
+    const scraped = await release('Jamie Lee Curtis Nude Celebrity Pictures', {
+      poster: '@_CelebMovie_@',
+      source: 'subject',
+    })
+    const celeborn = await release('Some.Album.2010', {
+      poster: 'celeborn@not.here (Celeborn)',
+      source: 'subject',
+    })
     // Scraped posters are found through posters (the batch store adds each release's).
-    await db.table('posters').multiInsert([{ poster: '@_CelebMovie_@' }, { poster: 'celeborn@not.here (Celeborn)' }])
+    await db
+      .table('posters')
+      .multiInsert([{ poster: '@_CelebMovie_@' }, { poster: 'celeborn@not.here (Celeborn)' }])
     const locked = await release('Locked.Thing', { passworded: true })
 
     const unlocked = await release('Known.Password', { passworded: true })
-    await db.table('release_passwords').insert({ release_id: unlocked, password: 'pw', source: 'spot-text' })
+    await db
+      .table('release_passwords')
+      .insert({ release_id: unlocked, password: 'pw', source: 'spot-text' })
 
     // A block of done ranges around the unusable ones (release_final); one beside an unread range isn't judged yet.
-    await db.table('groups').insert({ id: 1, name: 'alt.binaries.judged', priority: 1 }).onConflict('id').ignore()
+    await db
+      .table('groups')
+      .insert({ id: 1, name: 'alt.binaries.judged', priority: 1 })
+      .onConflict('id')
+      .ignore()
     await db.table('ranges').multiInsert([
-      { group_id: 1, start_id: 1, end_id: 1000, next_id: 1001, status: 'done', posted_low: new Date(settled.getTime() - 86400_000), posted_high: new Date(settled.getTime() + 86400_000) },
+      {
+        group_id: 1,
+        start_id: 1,
+        end_id: 1000,
+        next_id: 1001,
+        status: 'done',
+        posted_low: new Date(settled.getTime() - 86400_000),
+        posted_high: new Date(settled.getTime() + 86400_000),
+      },
       { group_id: 1, start_id: 1001, end_id: 2000, next_id: 1001, status: 'planned' },
     ])
-    await RangeBlocks.rebuild()
     const placed = { first_article: 100, last_article: 110 }
     const unusable = await release('ab12CD34ef56GH78ij90', { readable: false, ...placed })
-    const pending = await release('pp12CD34ef56GH78ij90', { readable: false, first_article: 990, last_article: 1000, posted_at: new Date(settled.getTime() + 86400_000 - 3600_000) })
-    const fresh = await release('zz12CD34ef56GH78ij90', { readable: false, settled_at: new Date(), ...placed })
+    const pending = await release('pp12CD34ef56GH78ij90', {
+      readable: false,
+      first_article: 990,
+      last_article: 1000,
+      posted_at: new Date(settled.getTime() + 86400_000 - 3600_000),
+    })
+    const fresh = await release('zz12CD34ef56GH78ij90', {
+      readable: false,
+      settled_at: new Date(),
+      ...placed,
+    })
     const spotted = await release('yy12CD34ef56GH78ij90', { readable: false, ...placed })
     await db.table('release_spots').insert({ release_id: spotted, spot_id: 's@x', files: 1 })
 
     const round = await new ReleaseJudge().full()
-    const verdicts = new Map((await db.from('release_verdicts').select('release_id', 'rule')).map((v) => [Number(v.release_id), v.rule]))
+    const verdicts = new Map(
+      (await db.from('release_verdicts').select('release_id', 'rule')).map((v) => [
+        Number(v.release_id),
+        v.rule,
+      ])
+    )
     assert.equal(verdicts.get(dead), 'dead')
     assert.isUndefined(verdicts.get(halfDead))
     assert.equal(verdicts.get(fakeArchive), 'fake')
@@ -106,7 +169,9 @@ test.group('ReleaseJudge', (group) => {
     assert.equal((await SearchService.search({ q: 'Locked', judged: true })).total, 1)
 
     // A password found: the next round takes the verdict back.
-    await db.table('release_passwords').insert({ release_id: locked, password: 'found', source: 'nzb' })
+    await db
+      .table('release_passwords')
+      .insert({ release_id: locked, password: 'found', source: 'nzb' })
     const again = await new ReleaseJudge().full()
     assert.equal(again.rules.locked.removed, 1)
     // Verdicts that stay are not written again.
@@ -115,7 +180,9 @@ test.group('ReleaseJudge', (group) => {
     assert.isNull(await db.from('release_verdicts').where('release_id', locked).first())
   })
 
-  test('judges the releases whose facts changed, and those a hash of theirs tipped over', async ({ assert }) => {
+  test('judges the releases whose facts changed, and those a hash of theirs tipped over', async ({
+    assert,
+  }) => {
     let n = 0
     const settled = new Date(Date.now() - 3 * 86400_000)
     const release = async (name: string, extra: Record<string, unknown> = {}) => {
@@ -123,12 +190,24 @@ test.group('ReleaseJudge', (group) => {
       const key = `jc${String(n).padStart(6, '0')}`.padEnd(40, '0')
       const [row] = await db
         .table('releases')
-        .insert({ release_key: key, identity_key: key, name, source: 'stem', groups: '[]', files: 3, posted_at: settled, readable: true, settled_at: settled, ...extra })
+        .insert({
+          release_key: key,
+          identity_key: key,
+          name,
+          source: 'stem',
+          groups: '[]',
+          files: 3,
+          posted_at: settled,
+          readable: true,
+          settled_at: settled,
+          ...extra,
+        })
         .returning('id')
       return Number(row.id)
     }
     const judge = new ReleaseJudge()
-    const verdict = async (id: number) => (await db.from('release_verdicts').where('release_id', id).first())?.rule
+    const verdict = async (id: number) =>
+      (await db.from('release_verdicts').where('release_id', id).first())?.rule
     const dirty = async () => Number((await db.from('judge_dirty').count('* as n'))[0].n)
 
     // New releases are noted; a passworded one is locked, until a password turns up.
@@ -138,20 +217,31 @@ test.group('ReleaseJudge', (group) => {
     assert.equal(await verdict(locked), 'locked')
     assert.equal(round.rules.locked.added, 1)
     assert.equal(await dirty(), 0)
-    await db.table('release_passwords').insert({ release_id: locked, password: 'pw', source: 'nzb' })
+    await db
+      .table('release_passwords')
+      .insert({ release_id: locked, password: 'pw', source: 'nzb' })
     round = await judge.changed()
     assert.isUndefined(await verdict(locked))
     assert.equal(round.rules.locked.removed, 1)
 
     // Probes: a release whose probed articles are all missing is dead once the prober's statuses come in.
     const dead = await release('Gone.Movie.2020.1080p')
-    const ids = await db.table('probe_candidates').multiInsert([
-      { release_id: dead, kind: 'lone', message_id: '<jc1@x>', file: 'a', status: 'waiting' },
-      { release_id: dead, kind: 'lone', message_id: '<jc2@x>', file: 'b', status: 'waiting' },
-    ]).returning('id')
+    const ids = await db
+      .table('probe_candidates')
+      .multiInsert([
+        { release_id: dead, kind: 'lone', message_id: '<jc1@x>', file: 'a', status: 'waiting' },
+        { release_id: dead, kind: 'lone', message_id: '<jc2@x>', file: 'b', status: 'waiting' },
+      ])
+      .returning('id')
     await judge.changed()
     assert.isUndefined(await verdict(dead))
-    await db.from('probe_candidates').whereIn('id', ids.map((r: { id: string }) => r.id)).update({ status: 'missing' })
+    await db
+      .from('probe_candidates')
+      .whereIn(
+        'id',
+        ids.map((r: { id: string }) => r.id)
+      )
+      .update({ status: 'missing' })
     await judge.changed()
     assert.equal(await verdict(dead), 'dead')
 
@@ -159,13 +249,19 @@ test.group('ReleaseJudge', (group) => {
     // comes first), though only the 20th changed.
     const hash = 'b'.repeat(32)
     const holders: number[] = []
-    for (let i = 0; i < 19; i++) holders.push(await release(`holder${i}`, i === 0 ? { passworded: true } : {}))
-    for (const [i, id] of holders.entries()) await db.table('file_hashes').insert({ candidate_id: 30000 + i, release_id: id, hash16k: hash, size: 5000 })
+    for (let i = 0; i < 19; i++)
+      holders.push(await release(`holder${i}`, i === 0 ? { passworded: true } : {}))
+    for (const [i, id] of holders.entries())
+      await db
+        .table('file_hashes')
+        .insert({ candidate_id: 30000 + i, release_id: id, hash16k: hash, size: 5000 })
     await judge.changed()
     assert.equal(await verdict(holders[0]), 'locked')
     assert.isUndefined(await verdict(holders[1]))
     const twentieth = await release('holder19')
-    await db.table('file_hashes').insert({ candidate_id: 30019, release_id: twentieth, hash16k: hash, size: 5000 })
+    await db
+      .table('file_hashes')
+      .insert({ candidate_id: 30019, release_id: twentieth, hash16k: hash, size: 5000 })
     round = await judge.changed()
     assert.equal(round.releases, 20)
     const rules = new Set()
@@ -173,7 +269,9 @@ test.group('ReleaseJudge', (group) => {
     assert.deepEqual([...rules], ['repeated'])
     // A 21st: the file was in 20 releases without it, so only it is judged.
     const twentyFirst = await release('holder20')
-    await db.table('file_hashes').insert({ candidate_id: 30020, release_id: twentyFirst, hash16k: hash, size: 5000 })
+    await db
+      .table('file_hashes')
+      .insert({ candidate_id: 30020, release_id: twentyFirst, hash16k: hash, size: 5000 })
     round = await judge.changed()
     assert.equal(round.releases, 1)
     assert.equal(await verdict(twentyFirst), 'repeated')
diff --git a/tests/functional/settler.spec.ts b/tests/functional/settler.spec.ts
deleted file mode 100644
index 21611ef..0000000
--- a/tests/functional/settler.spec.ts
+++ /dev/null
@@ -1,39 +0,0 @@
-import { test } from '@japa/runner'
-import db from '@adonisjs/lucid/services/db'
-import testUtils from '@adonisjs/core/services/test_utils'
-import Settler from '#services/settler'
-
-test.group('Settler', (group) => {
-  group.each.setup(() => testUtils.db().withGlobalTransaction())
-
-  test('settles quiet releases: complete by the [i/N] counter, unknown without one', async ({ assert }) => {
-    const old = new Date(Date.now() - 7 * 3600 * 1000)
-    const row = (key: string, files: number, fileTotal: number | null, lastSeen: Date) => ({
-      release_key: key.padEnd(40, '0'), identity_key: key.padEnd(40, '0'), name: key, source: 'subject', groups: '[]', files, file_total: fileTotal, last_seen_at: lastSeen,
-    })
-    await db.table('releases').multiInsert([row('a', 10, 10, old), row('b', 8, 10, old), row('c', 3, null, old), row('d', 10, 10, new Date())])
-    assert.equal(await Settler.run(), 3)
-    const byName = Object.fromEntries((await db.from('releases').select('name', 'complete', 'settled_at')).map((r) => [r.name, [r.complete, r.settled_at !== null]]))
-    assert.deepEqual(byName, { a: [true, true], b: [false, true], c: [null, true], d: [null, false] })
-  })
-
-  test('settles history releases (posted long ago) once unchanged for half an hour', async ({ assert }) => {
-    const posted = new Date('2015-01-01T00:00:00Z')
-    const row = (key: string, lastSeen: Date, lastPosted: Date) => ({
-      release_key: key.padEnd(40, '0'), identity_key: key.padEnd(40, '0'), name: key, source: 'subject', groups: '[]', files: 1, last_seen_at: lastSeen, posted_at: lastPosted, last_posted_at: lastPosted,
-    })
-    const minutesAgo = (m: number) => new Date(Date.now() - m * 60_000)
-    await db.table('releases').multiInsert([row('old', minutesAgo(31), posted), row('fresh', minutesAgo(5), posted), row('tail', minutesAgo(31), minutesAgo(40))])
-    const ids = Object.fromEntries((await db.from('releases').select('id', 'name')).map((r) => [r.name, r.id]))
-    await db.table('probe_candidates').multiInsert([
-      { release_id: ids.old, kind: 'lone', message_id: '<a@x>', file: 'a' },
-      { release_id: ids.fresh, kind: 'lone', message_id: '<b@x>', file: 'b' },
-    ])
-    assert.equal(await Settler.run(), 1)
-    // The settled release's candidates are claimable now, as unreadable (readable defaults to false).
-    const ready = await db.from('probe_candidates').orderBy('message_id').select('ready', 'unreadable')
-    assert.deepEqual(ready.map((r) => [r.ready, r.unreadable]), [[true, true], [false, false]])
-    const settled = (await db.from('releases').whereNotNull('settled_at').select('name')).map((r) => r.name)
-    assert.deepEqual(settled, ['old'])
-  })
-})
diff --git a/tests/unit/release/source.spec.ts b/tests/unit/release/source.spec.ts
new file mode 100644
index 0000000..d9c7644
--- /dev/null
+++ b/tests/unit/release/source.spec.ts
@@ -0,0 +1,19 @@
+import { test } from '@japa/runner'
+import { SOURCES, sourceCode, sourceName } from '#lib/release/source'
+
+test.group('release source codes', () => {
+  test('names and codes map both ways; the codes are fixed', ({ assert }) => {
+    assert.deepEqual(SOURCES, { subject: 1, post: 2, stem: 3, spot: 4, nzb: 5, album: 6 })
+    for (const [name, code] of Object.entries(SOURCES)) {
+      assert.equal(sourceCode(name), code)
+      assert.equal(sourceName(code), name)
+      assert.equal(sourceName(String(code)), name)
+    }
+  })
+
+  test('an unknown name throws, an unknown code reads as unknown', ({ assert }) => {
+    assert.throws(() => sourceCode('subjekt'), /Unknown release source/)
+    assert.equal(sourceName(99), 'unknown')
+    assert.equal(sourceName(null), 'unknown')
+  })
+})