fix: make radio migrations safe for existing schemas

scripts/db-url.test.ts

@@ -0,0 +1,11 @@
+import { describe, expect, it } from "vitest";
+import { mysqlConnectionUrl } from "./db-url";
+
+describe("mysqlConnectionUrl", () => {
+  it("removes Prisma-only pool options before passing the URL to MySQL2", () => {
+    const result = mysqlConnectionUrl("mysql://user:pass@localhost:3306/cms?connection_limit=20&pool_timeout=30&charset=utf8mb4");
+    expect(result).not.toContain("connection_limit");
+    expect(result).not.toContain("pool_timeout");
+    expect(result).toContain("charset=utf8mb4");
+  });
+});