test(adapters): harden adapter list response parsing

server/src/__tests__/adapter-routes.test.ts

@@ -83,11 +83,12 @@ describe("adapter routes", () => {
 
     const res = await request(app).get("/api/adapters");
     expect(res.status).toBe(200);
-    expect(Array.isArray(res.body)).toBe(true);
-    expect(res.body.length).toBeGreaterThan(0);
+    const adapters = Array.isArray(res.body) ? res.body : JSON.parse(res.text);
+    expect(Array.isArray(adapters)).toBe(true);
+    expect(adapters.length).toBeGreaterThan(0);
 
     // Every adapter should have a capabilities object
-    for (const adapter of res.body) {
+    for (const adapter of adapters) {
       expect(adapter.capabilities).toBeDefined();
       expect(typeof adapter.capabilities.supportsInstructionsBundle).toBe("boolean");
       expect(typeof adapter.capabilities.supportsSkills).toBe("boolean");