第一次提交

backend/app/db/sql/003_tenant_quota.sql

@@ -0,0 +1,17 @@
+-- 003: tenants 补充 quota / retention_policy 列（接口契约 13.1 需要）
+DO $$
+BEGIN
+    IF NOT EXISTS (
+        SELECT 1 FROM information_schema.columns
+        WHERE table_name = 'tenants' AND column_name = 'quota'
+    ) THEN
+        ALTER TABLE tenants ADD COLUMN quota TEXT;
+    END IF;
+    IF NOT EXISTS (
+        SELECT 1 FROM information_schema.columns
+        WHERE table_name = 'tenants' AND column_name = 'retention_policy_id'
+    ) THEN
+        ALTER TABLE tenants ADD COLUMN retention_policy_id TEXT;
+    END IF;
+END
+$$;