feat: establish NekoNest Cloud control and relay

drizzle/9001_provisioning_slug_backfill.sql

@@ -0,0 +1,24 @@
+INSERT OR IGNORE INTO `audit_events`
+  (`id`, `actor_id`, `action`, `target_type`, `target_id`, `reason`,
+   `before_json`, `after_json`, `correlation_id`, `created_at`)
+SELECT 'audit_slug_backfill_' || `id`,
+       'system:migration',
+       'tenant.slug_backfilled',
+       'tenant',
+       `id`,
+       '旧版短租户 slug 不满足隔离域名契约，按不可变 tenant ID 扩展',
+       json_object('slug', `slug`),
+       json_object('slug', 'n-' || substr(`id`, -32)),
+       'corr_slug_backfill_' || `id`,
+       CURRENT_TIMESTAMP
+FROM `tenant_instances`
+WHERE `id` LIKE 'tenant_%'
+  AND length(`id`) = 39
+  AND (`slug` NOT LIKE 'n-%' OR length(`slug`) <> 34);--> statement-breakpoint
+
+UPDATE `tenant_instances`
+SET `slug` = 'n-' || substr(`id`, -32),
+    `updated_at` = CURRENT_TIMESTAMP
+WHERE `id` LIKE 'tenant_%'
+  AND length(`id`) = 39
+  AND (`slug` NOT LIKE 'n-%' OR length(`slug`) <> 34);