Claude Code: Fix worker env injection - remove empty API key defaults that interfere with HF Space secrets

app.py

@@ -284,12 +284,15 @@ class WorkerManager:
                     pass
 
     def _get_worker_env(self) -> dict[str, str]:
-        """Build environment for worker process."""
+        """Build environment for worker process.
+
+        CRITICAL: Uses os.environ.copy() which automatically inherits all
+        HF Space secrets (HF_TOKEN, OPENAI_API_KEY, OPENROUTER_API_KEY, etc).
+        DO NOT set empty defaults - that can interfere with secret inheritance.
+        """
         worker_env = os.environ.copy()
         worker_env["PYTHONPATH"] = "/app:" + worker_env.get("PYTHONPATH", "")
         worker_env["CAIN_IS_WORKER"] = "true"
-        worker_env.setdefault("CLAUDE_API_KEY", "")
-        worker_env.setdefault("ANTHROPIC_API_KEY", "")
         return worker_env
 
     async def shutdown(self):