zen: rate limiter

packages/console/core/migrations/20260414235536_lame_wild_child/migration.sql

@@ -0,0 +1,6 @@
+CREATE TABLE `key_rate_limit` (
+	`key` varchar(255) NOT NULL,
+	`interval` varchar(12) NOT NULL,
+	`count` int NOT NULL,
+	CONSTRAINT PRIMARY KEY(`key`,`interval`)
+);

packages/console/core/migrations/20260415002256_perpetual_karen_page/migration.sql

@@ -0,0 +1 @@
+ALTER TABLE `key_rate_limit` MODIFY COLUMN `interval` varchar(20) NOT NULL;

packages/console/core/migrations/20260415002534_far_smasher/migration.sql

@@ -0,0 +1 @@
+ALTER TABLE `key_rate_limit` MODIFY COLUMN `interval` varchar(40) NOT NULL;