diff --git a/.openclaw-sync/source.json b/.openclaw-sync/source.json
index 65d57f44b..674270e83 100644
--- a/.openclaw-sync/source.json
+++ b/.openclaw-sync/source.json
@@ -1,5 +1,5 @@
 {
   "repository": "openclaw/openclaw",
-  "sha": "f427ddc220b5d3eb396ffb14d0ad7960ecf9e325",
-  "syncedAt": "2026-04-27T07:25:39.354Z"
+  "sha": "556c3e87df0eb576b55017bfa55aeb3fcfc61f95",
+  "syncedAt": "2026-04-27T07:27:36.293Z"
 }
diff --git a/docs/reference/transcript-hygiene.md b/docs/reference/transcript-hygiene.md
index 4d6ac90a2..6783d1e62 100644
--- a/docs/reference/transcript-hygiene.md
+++ b/docs/reference/transcript-hygiene.md
@@ -118,6 +118,13 @@ external end-user instructions.
 - Missing OpenAI Responses-family tool outputs are synthesized as `aborted` to match Codex replay normalization.
 - No thought signature stripping.
 
+**OpenAI-compatible Gemma 4**
+
+- Historical assistant thinking/reasoning blocks are stripped before replay so local
+  OpenAI-compatible Gemma 4 servers do not receive prior-turn reasoning content.
+- Current same-turn tool-call continuations keep the assistant reasoning block
+  attached to the tool call until the tool result has been replayed.
+
 **Google (Generative AI / Gemini CLI / Antigravity)**
 
 - Tool call id sanitization: strict alphanumeric.