Poster search through a posters table and releases_poster_newest_idx; complete releases are final; the tail before everything (-3)

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

database/migrations/1770000004000_posters.ts

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+import { BaseSchema } from '@adonisjs/lucid/schema'
+
+/**
+ * Poster search (LOG.md 2026-10-16 (70)): "poster ILIKE '%…%'" on releases had no index, so it walked all 50M releases
+ * newest first; a poster with few releases took 30+ minutes. posters holds each poster once (3M, many random per file
+ * of an obfuscated upload) with a trigram index; releases_poster_newest_idx gives a poster's releases newest first.
+ * Both by the poster's first 200 characters: a spam poster of 3,024 bytes is over a btree entry's 2,704. The batch store
+ * adds new posters. Homelab built the releases index by hand first (concurrently); a no-op there.
+ */
+export default class extends BaseSchema {
+  static disableTransactions = true
+
+  async up() {
+    this.schema.raw(`CREATE TABLE IF NOT EXISTS posters (poster text PRIMARY KEY)`)
+    this.schema.raw(`INSERT INTO posters (poster) SELECT DISTINCT left(poster, 200) FROM releases WHERE poster IS NOT NULL ON CONFLICT DO NOTHING`)
+    this.schema.raw(`CREATE INDEX IF NOT EXISTS posters_trgm ON posters USING gin (poster gin_trgm_ops)`)
+    this.schema.raw(`CREATE INDEX CONCURRENTLY IF NOT EXISTS releases_poster_newest_idx ON releases (left(poster, 200), posted_at DESC NULLS LAST, id DESC)`)
+  }
+
+  async down() {
+    this.schema.raw(`DROP INDEX CONCURRENTLY IF EXISTS releases_poster_newest_idx`)
+    this.schema.raw(`DROP TABLE IF EXISTS posters`)
+  }
+}

database/migrations/1770000004100_release_final_complete.ts

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+import { BaseSchema } from '@adonisjs/lucid/schema'
+
+/**
+ * release_final() with the release's complete flag: a release with every file its counter announced is final as it is
+ * (nothing it lacks can come); the time window only decides for the incomplete and those without a counter (LOG.md
+ * 2026-10-16 (70): a complete episode posted an hour before was "pending" for six hours more).
+ */
+export default class extends BaseSchema {
+  async up() {
+    // Beside the five-argument one, which the services still running call until the deploy restarts them.
+    this.schema.raw(`
+      CREATE FUNCTION release_final(g integer, first_article bigint, last_article bigint, posted timestamptz, last_posted timestamptz, complete boolean)
+      RETURNS boolean LANGUAGE sql STABLE AS $$
+        SELECT coalesce(complete, false) OR EXISTS (
+          SELECT 1 FROM range_blocks b
+          WHERE b.group_id = g AND b.start_id <= first_article AND b.end_id >= last_article
+            AND (b.at_group_start OR b.posted_low <= posted - interval '6 hours')
+            AND b.posted_high >= coalesce(last_posted, posted) + interval '6 hours')
+      $$`)
+  }
+
+  async down() {}
+}