Merge pull request #185 from hanushh/fix-agent-auth-optional-401

fix(backend): Return None instead of 401 when agent not found in get_agent_auth_context_optional

backend/app/core/agent_auth.py

@@ -168,11 +168,12 @@ async def get_agent_auth_context_optional(
         return None
     agent = await _find_agent_for_token(session, resolved)
     if agent is None:
+        if agent_token:
             logger.warning(
                 "agent auth optional invalid token path=%s token_prefix=%s",
                 request.url.path,
                 resolved[:6],
             )
-        raise HTTPException(status_code=status.HTTP_401_UNAUTHORIZED)
+        return None
     await _touch_agent_presence(request, session, agent)
     return AgentAuthContext(actor_type="agent", agent=agent)