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/1770000004100_release_final_complete.ts

@@ -0,0 +1,23 @@
+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() {}
+}