deprecate instead of remove sstreaming helm values

Signed-off-by: Jet Chiang <pokyuen.jetchiang-ext@solo.io>

Author: supreme-gg-gg

helm/kagent/templates/NOTES.txt

@@ -60,6 +60,15 @@ TROUBLESHOOTING:
 DOCUMENTATION:
   Visit https://kagent.dev for comprehensive documentation and examples.
 
+{{- if .Values.controller.streaming }}
+################################################################################
+# DEPRECATED VALUES DETECTED                                                   #
+################################################################################
+  controller.streaming.* (maxBufSize, initialBufSize, timeout) were removed in
+  0.10.0. The A2A SDK now handles SSE buffering and timeouts internally.
+  These values are ignored. Please remove them from your values override.
+
+{{- end }}
 {{ if .Values.database.postgres.bundled.enabled -}}
 ################################################################################
 {{- if and (eq .Values.database.postgres.url "") (eq .Values.database.postgres.urlFile "") }}

helm/kagent/values.yaml

@@ -187,6 +187,10 @@ controller:
     repository: kagent-dev/kagent/skills-init
     tag: "" # Will default to global, then Chart version
     pullPolicy: ""
+  # -- @deprecated Removed in 0.10.0. The A2A SDK now handles SSE buffering and timeouts
+  # internally. These values have no effect and will be removed in a future release.
+  streaming: null
+
   # -- Namespaces the controller should watch.
   # If empty, the controller will watch ALL available namespaces.
   # @default -- [] (watches all available namespaces)