handle DeepSeek reasoning-only test responses

api/server.py

@@ -3877,7 +3877,10 @@ class Handler(BaseHTTPRequestHandler):
                 if ai_requires_api_key(runtime["provider"]) and not runtime["api_key"]:
                     return self.send_json(400, {"error": "ai_provider_api_key_required"})
                 headers = {"Authorization": "Bearer " + runtime["api_key"]} if runtime["api_key"] else {}
-                result = http_json("POST", runtime["base_url"] + "/chat/completions", {"model": runtime["model"], "temperature": 0, "max_tokens": 8, "messages": [{"role": "user", "content": "Reply with exactly OK."}]}, headers=headers, timeout=30, error_prefix="ai")
+                test_payload = {"model": runtime["model"], "temperature": 0, "max_tokens": 16, "messages": [{"role": "user", "content": "Reply with exactly OK."}]}
+                if runtime["provider"] == "deepseek":
+                    test_payload["thinking"] = {"type": "disabled"}
+                result = http_json("POST", runtime["base_url"] + "/chat/completions", test_payload, headers=headers, timeout=30, error_prefix="ai")
                 content = (((result.get("choices") or [{}])[0].get("message") or {}).get("content") or "") if isinstance(result, dict) else ""
                 if not str(content).strip():
                     return self.send_json(502, {"error": "ai_empty_response"})

tests/test_app.py

@@ -142,6 +142,7 @@ class BrowserOnlyAppTests(unittest.TestCase):
             self.assertEqual(status, 200)
             self.assertTrue(body["ok"])
             self.assertEqual(http_json.call_args.args[0:2], ("POST", "https://api.deepseek.com/v1/chat/completions"))
+            self.assertEqual(http_json.call_args.args[2]["thinking"], {"type": "disabled"})
 
     def test_provider_errors_are_not_mislabelled_as_maps_errors(self):
         class CloudflareResponse: