diff --git a/.openclaw-sync/source.json b/.openclaw-sync/source.json
index af0e2f53a..b2e3e19d6 100644
--- a/.openclaw-sync/source.json
+++ b/.openclaw-sync/source.json
@@ -1,5 +1,5 @@
 {
   "repository": "openclaw/openclaw",
-  "sha": "569290c36ddece84ae4159d08a4da1d1edd802f5",
-  "syncedAt": "2026-04-24T04:32:25.481Z"
+  "sha": "cb2c36b04975e34ab7014a11575d6589aa96ae32",
+  "syncedAt": "2026-04-24T04:34:23.753Z"
 }
diff --git a/docs/web/control-ui.md b/docs/web/control-ui.md
index 2ba38be4a..0520c1b0c 100644
--- a/docs/web/control-ui.md
+++ b/docs/web/control-ui.md
@@ -159,7 +159,9 @@ Cron jobs panel notes:
 - Talk mode uses the registered realtime voice provider. Configure OpenAI with
   `talk.provider: "openai"` plus `talk.providers.openai.apiKey`, or reuse the
   Voice Call realtime provider config. The browser never receives the standard
-  OpenAI API key; it receives only the ephemeral Realtime client secret.
+  OpenAI API key; it receives only the ephemeral Realtime client secret. The
+  Realtime session prompt is assembled by the Gateway; `talk.realtime.session`
+  does not accept caller-provided instruction overrides.
 - In the Chat composer, the Talk control is the waves button next to the
   microphone dictation button. When Talk starts, the composer status row shows
   `Connecting Talk...`, then `Talk live` while audio is connected, or