Rebuild: schema for groups, rule sets, ranges, release catalog, chunk store, fragments, probe queue, rule bookkeeping and nodes

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

database/migrations/1770000000100_create_groups.ts

@@ -0,0 +1,27 @@
+import { BaseSchema } from '@adonisjs/lucid/schema'
+
+/**
+ * The indexed groups (REBUILD.md, group list). `priority` decides a
+ * crosspost's owner: the indexed group in its Xref with the lowest number.
+ * New groups get numbers after the existing ones, so they never take
+ * articles from groups already done.
+ */
+export default class extends BaseSchema {
+  async up() {
+    this.schema.createTable('groups', (table) => {
+      table.increments('id')
+      table.string('name', 255).notNullable().unique()
+      table.integer('priority').notNullable().unique()
+      table.boolean('active').notNullable().defaultTo(true)
+      // From GROUP when planned: the server's oldest and newest article.
+      table.bigInteger('low').nullable()
+      table.bigInteger('high').nullable()
+      table.timestamp('planned_at', { useTz: true }).nullable()
+      table.timestamp('created_at', { useTz: true }).notNullable().defaultTo(this.now())
+    })
+  }
+
+  async down() {
+    this.schema.dropTable('groups')
+  }
+}