Node content empty after creation via syncState

[jsp-kld]

Reproduce

1. POST /v1/canvas/syncState with payload below → returns 200 {"success":true}
2. Refresh page: node shows title + preview
3. Click node: right panel is empty

Minimal code (redacted)

import aiohttp, uuid, time, json
from datetime import datetime, timezone

CANVAS_ID = "<REDACTED>"
COOKIE = {"_rf_access": "<REDACTED>", "_rf_uid": "<REDACTED>"}

async def create():
    payload = {
        "canvasId": CANVAS_ID,
        "transactions": [{
            "txId": f"tx-{int(time.time()*1000)}-{uuid.uuid4().hex[:8]}",
            "createdAt": int(time.time()*1000),
            "nodeDiffs": [{
                "id": f"node-{uuid.uuid4().hex[:16]}",
                "type": "add",
                "to": {
                    "type": "skillResponse",
                    "position": {"x": 200, "y": 200},
                    "data": {
                        "title": "Test",
                        "entityId": f"ar-{uuid.uuid4().hex[:16]}",
                        "contentPreview": "short",
                        "content": "full content here",
                        "metadata": {"status": "finish", "sizeMode": "compact"}
                    }
                }
            }]
        }]
    }
    async with aiohttp.ClientSession(cookies=COOKIE) as s:
        async with s.post("https://<REDACTED>/v1/canvas/syncState", json=payload) as r:
            print(await r.text())  # 200 {"success":true,"data":{}}

if __name__ == "__main__":
    import asyncio
    asyncio.run(create())

Expected

Node opens and shows full content in right panel.

Actual

Node visible, but panel empty.

Notes

All fields match working nodes returned by /v1/canvas/getState, including content.