fix: add ApisixPluginConfig to increase max_body_size for file uploads

agents/k8s/news-scan-deployment.yaml

@@ -108,6 +108,7 @@ metadata:
     k8s.apisix.apache.org/proxy-timeout-connect: "300s"
     k8s.apisix.apache.org/proxy-timeout-read: "300s"
     k8s.apisix.apache.org/proxy-timeout-send: "300s"
+    k8s.apisix.apache.org/plugin-config-name: news-scan-plugins
 spec:
   ingressClassName: apisix
   rules:
@@ -121,3 +122,15 @@ spec:
             name: news-scan
             port:
               number: 5000
+---
+apiVersion: apisix.apache.org/v2
+kind: ApisixPluginConfig
+metadata:
+  name: news-scan-plugins
+  namespace: ai-agents
+spec:
+  plugins:
+  - name: client-control
+    enable: true
+    config:
+      max_body_size: 209715200