feat(k8s): add missing env configs for outbox and timeout

test/k8s/balancer.yaml

@@ -110,6 +110,12 @@ spec:
                 configMapKeyRef:
                   name: ez-api-config
                   key: EZ_BALANCER_STATS_FLUSH_TIMEOUT_SECONDS
+            # Timeout by Provider
+            - name: EZ_BALANCER_TIMEOUT_BY_PROVIDER
+              valueFrom:
+                configMapKeyRef:
+                  name: ez-api-config
+                  key: EZ_BALANCER_TIMEOUT_BY_PROVIDER
           resources:
             requests:
               memory: "128Mi"

test/k8s/configmap.yaml

@@ -37,3 +37,5 @@ data:
   EZ_BALANCER_STATS_FLUSH_INTERVAL_SECONDS: "300"
   EZ_BALANCER_STATS_FLUSH_BATCH_SIZE: "200"
   EZ_BALANCER_STATS_FLUSH_TIMEOUT_SECONDS: "5"
+  # 按 provider type 配置非流式请求超时（秒，JSON）
+  EZ_BALANCER_TIMEOUT_BY_PROVIDER: '{"default":30,"openai":40,"compatible":40,"anthropic":50,"claude":50,"google":60}'