Complex Layout:Header Content Footer

Build 4549 on claude/gallant-tesla-764bg3
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Baseline History
Build 4549832d5d3 current baseline
Current build. Accepted by Andrey Yamanov.
Build 454638fbcd0
Inherited baseline identical to build 4086
Build 408676376ff
Auto-accepted
Build 37797b42bd6
Accepted by Andrey Yamanov.
Build 348804d941a
Accepted by Andrey Yamanov.
Build 31797984070
Auto-accepted
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