diff --git a/snapshots/acp/image-compaction/session.jsonl b/snapshots/acp/image-compaction/session.jsonl
index 4544b185ab..e5120fd490 100644
--- a/snapshots/acp/image-compaction/session.jsonl
+++ b/snapshots/acp/image-compaction/session.jsonl
@@ -27,10 +27,11 @@
 {"type":"compaction/end","data":{"compactionId":"{{id:1}}","turn":2}}
 {"type":"step/start","data":{"turn":2,"step":1}}
 {"type":"user/message","data":{"content":[{"type":"text","text":"Now reply with exactly the single word DONE."}],"source":{"kind":"user"},"role":"user","id":"{{message:4}}"},"surfaceOp":"append"}
+{"type":"request/header","data":{"header":{"config":{"provider":"deepseek-official","model":"deepseek-v4-flash-vision-exp"},"system":"{{system}}","tools":"{{tools}}"},"reason":"series"}}
 {"type":"assistant/chunk","data":{"turn":2,"step":1,"chunk":{"type":"block-start","index":0,"blockType":"text"}}}
 {"type":"assistant/chunk","data":{"turn":2,"step":1,"chunk":{"type":"block-end","index":0,"block":{"type":"text","text":"DONE"}}}}
 {"type":"assistant/chunk","data":{"turn":2,"step":1,"chunk":{"type":"usage","usage":{"inputTokens":3,"outputTokens":3}}}}
 {"type":"assistant/chunk","data":{"turn":2,"step":1,"chunk":{"type":"finish","reason":{"kind":"stop"}}}}
-{"type":"assistant/message","data":{"turn":2,"step":1,"message":{"role":"assistant","content":[{"type":"text","text":"DONE"}],"source":{"kind":"model","provider":"deepseek-official","model":"deepseek-v4-flash-vision-exp"},"id":"{{message:6}}"},"usage":{"inputTokens":3,"outputTokens":3}},"sourceEventSeqs":[28,29,30,31],"surfaceOp":"append"}
+{"type":"assistant/message","data":{"turn":2,"step":1,"message":{"role":"assistant","content":[{"type":"text","text":"DONE"}],"source":{"kind":"model","provider":"deepseek-official","model":"deepseek-v4-flash-vision-exp"},"id":"{{message:6}}"},"usage":{"inputTokens":3,"outputTokens":3}},"sourceEventSeqs":[29,30,31,32],"surfaceOp":"append"}
 {"type":"step/end","data":{"turn":2,"step":1}}
 {"type":"turn/end","data":{"turn":2,"reason":{"kind":"completed"}}}