Update src/seclab_taskflow_agent/capi.py

Co-authored-by: Copilot <[email protected]>

Author: p-

src/seclab_taskflow_agent/capi.py

@@ -52,7 +52,7 @@ def get_AI_token():
 
 def get_custom_header() -> dict[str, str]:
     """
-    Get custom header from environment variable CUSTOM_HEADER.
+    Get custom header from environment variable AI_API_CUSTOM_HEADER.
     Expected format: name:value
     Returns a dictionary that can be merged into request headers.
     """