add gpt-5.1 and gpt-5.1-codex support

config.json

@@ -51,6 +51,18 @@
       "type": "openai",
       "reasoning": "off"
     },
+    {
+      "name": "GPT-5.1",
+      "id": "gpt-5.1",
+      "type": "openai",
+      "reasoning": "auto"
+    },
+    {
+      "name": "GPT-5.1-Codex",
+      "id": "gpt-5.1-codex",
+      "type": "openai",
+      "reasoning": "off"
+    },
     {
       "name": "GLM-4.6",
       "id": "glm-4.6",
@@ -58,6 +70,6 @@
     }
   ],
   "dev_mode": false,
-  "user_agent": "factory-cli/0.25.1",
+  "user_agent": "factory-cli/0.25.2",
   "system_prompt": "You are Droid, an AI software engineering agent built by Factory.\n\n"
 }

transformers/request-openai.js

@@ -141,7 +141,7 @@ export function getOpenAIHeaders(authHeader, clientHeaders = {}) {
   const headers = {
     'content-type': 'application/json',
     'authorization': authHeader || '',
-    'x-api-provider': 'azure_openai',
+    'x-api-provider': 'openai',
     'x-factory-client': 'cli',
     'x-session-id': sessionId,
     'x-assistant-message-id': messageId,