chore: update Python SDK API reference

Auto-generated from fishaudio/fish-audio-python@203ee04

Author: fishaudio-bot

api-reference/sdk/python/core.mdx

@@ -217,6 +217,17 @@ class BaseClientWrapper()
 
 Base wrapper with shared logic for sync/async clients.
 
+<a id="fishaudio.core.client_wrapper.BaseClientWrapper.get_headers"></a>
+
+#### get\_headers
+
+```python
+def get_headers(
+        additional_headers: Optional[Dict[str, str]] = None) -> Dict[str, str]
+```
+
+Build headers including authentication and user agent.
+
 <a id="fishaudio.core.client_wrapper.ClientWrapper"></a>
 
 ## ClientWrapper Objects