Update generator.json

Support GPT-5

Author: sng-asyncfunc

api/config/generator.json

@@ -41,9 +41,12 @@
       }
     },
     "openai": {
-      "default_model": "gpt-4o",
+      "default_model": "gpt-5",
       "supportsCustomModel": true,
       "models": {
+        "gpt-5": {
+          "temperature": 1.0
+        },
         "gpt-4o": {
           "temperature": 0.7,
           "top_p": 0.8