enhance AktoGuardrail error handling and update test initialization comments

litellm/proxy/guardrails/guardrail_hooks/akto/__init__.py

@@ -12,6 +12,7 @@ if TYPE_CHECKING:
 def initialize_guardrail(litellm_params: "LitellmParams", guardrail: "Guardrail"):
     import litellm
 
+    # Note: AktoGuardrail only supports pre_call.
     _akto_callback = AktoGuardrail(
         akto_base_url=getattr(litellm_params, "akto_base_url", None),
         akto_api_key=getattr(litellm_params, "akto_api_key", None),

litellm/proxy/guardrails/guardrail_hooks/akto/akto.py

@@ -114,7 +114,8 @@ class AktoGuardrail(CustomGuardrail):
                 },
                 timeout=self.guardrail_timeout,
             )
-        except Exception as e:
+        except (httpx.RequestError, httpx.HTTPStatusError) as e:
+            # Fire-and-forget: log but never crash the request path
             verbose_proxy_logger.error("Akto blocked-request ingest error: %s", e)
 
     # ── Payload builders ──

tests/guardrails_tests/test_akto_guardrails.py

@@ -135,6 +135,7 @@ def test_init_from_env():
 
 
 def test_init_defaults():
+    # patch.dict restores popped keys on exit
     with patch.dict(os.environ, {}, clear=False):
         os.environ.pop("AKTO_ACCOUNT_ID", None)
         os.environ.pop("AKTO_VXLAN_ID", None)