The pending ladder in the prober: unnamed releases probed cheapest first, signatures learned, the named moved into the catalog

pending_ladder.ts claims the oldest waiting pending releases' next target
(par2, archive, lone, 7z-tail in that order) as at least PENDING_SHARE of each
claim; a usable name (the largest named file of a par2 set or a listing, or a
lone file's yEnc name, neither packaging nor random) hands the release to the
namer, no name the next target or the end of the climb; climbs count on
pending_signatures per (tool, group, poster) and (tool, group), and a signature
with 100 climbs and 0.5% named or fewer is dropped: its waiting releases are
discarded without a probe, the rules' sample excepted. pending_namer.ts reads
a named release's articles again from the corpus or by XOVER and writes it to
the catalog under the pending key (source weak-stem, the name as inner name)
with its chunk and candidates. Migration 6400; config PENDING_*.

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

database/migrations/1770000006400_pending_ladder.ts

@@ -0,0 +1,49 @@
+import { BaseSchema } from '@adonisjs/lucid/schema'
+
+/**
+ * The pending ladder (REBUILD.md decision f, 2026-10-26): what the prober needs to work pending_releases cheapest
+ * first and to learn which signatures never name anything.
+ * - pending_releases: `file_total` (the counter's, for the catalog row once named), `inspections` (what each probe
+ *   showed, by kind), `named` (the usable name a probe found; status 4 until the namer moved it into the catalog).
+ *   Status: 0 waiting, 1 named and in the catalog, 2 discarded (its signature's verdict), 3 exhausted (every
+ *   target probed, no name), 4 named, awaiting the move, 9 taken by a running prober.
+ * - pending_signatures: per (tool, group, poster) how many pending releases were probed to the end and how many
+ *   got a name; `dropped` once probed ≥ PENDING_MIN_PROBES and named ≤ PENDING_MAX_NAMED of them (voyager 2's
+ *   garbage learner, LOG.md 2026-10-08 (5)). The poster '' row is the tool's and group's together.
+ */
+export default class extends BaseSchema {
+  async up() {
+    this.schema.raw(`ALTER TABLE pending_releases ADD COLUMN IF NOT EXISTS file_total integer`)
+    this.schema.raw(
+      `ALTER TABLE pending_releases ADD COLUMN IF NOT EXISTS inspections jsonb NOT NULL DEFAULT '[]'`
+    )
+    this.schema.raw(`ALTER TABLE pending_releases ADD COLUMN IF NOT EXISTS named varchar(255)`)
+    // The ladder's claim: the oldest waiting ones; the namer's: the named ones.
+    this.schema.raw(
+      `CREATE INDEX IF NOT EXISTS pending_releases_waiting_idx ON pending_releases (created_at) WHERE status = 0`
+    )
+    this.schema.raw(
+      `CREATE INDEX IF NOT EXISTS pending_releases_naming_idx ON pending_releases (probed_at) WHERE status = 4`
+    )
+    this.schema.raw(`
+      CREATE TABLE pending_signatures (
+        tool varchar(16) NOT NULL,
+        group_id integer NOT NULL,
+        poster text NOT NULL DEFAULT '',
+        probed integer NOT NULL DEFAULT 0,
+        named integer NOT NULL DEFAULT 0,
+        dropped boolean NOT NULL DEFAULT false,
+        updated_at timestamptz NOT NULL DEFAULT now(),
+        PRIMARY KEY (tool, group_id, poster)
+      )`)
+  }
+
+  async down() {
+    this.schema.raw(`DROP TABLE IF EXISTS pending_signatures`)
+    this.schema.raw(`DROP INDEX IF EXISTS pending_releases_naming_idx`)
+    this.schema.raw(`DROP INDEX IF EXISTS pending_releases_waiting_idx`)
+    this.schema.raw(`ALTER TABLE pending_releases DROP COLUMN IF EXISTS named`)
+    this.schema.raw(`ALTER TABLE pending_releases DROP COLUMN IF EXISTS inspections`)
+    this.schema.raw(`ALTER TABLE pending_releases DROP COLUMN IF EXISTS file_total`)
+  }
+}