fix(scripts): bump gpt model to openai/gpt-5.2

Author: lzwjava

scripts/llm/openrouter_client.py

@@ -17,7 +17,7 @@
     "deepseek": "deepseek/deepseek-v3.2",
     "mistral": "mistralai/mistral-medium-3.1",
     "qwen":"qwen/qwen3-coder",
-    "gpt": "openai/gpt-5.1",
+    "gpt": "openai/gpt-5.2",
     "grok-code": "x-ai/grok-code-fast-1",
     "grok-fast": "x-ai/grok-4.1-fast",
     "glm": "z-ai/glm-4.7",