feat: add row delta update #281

Job	Run time
Meson SigV4 (AMD64 Ubuntu 26.04)	6m 19s
AWS (Ubuntu 26.04, S3 + SigV4, system AWS SDK)	14m 25s
AWS (macOS 26 ARM64, S3, bundled AWS SDK)	14m 40s
AWS (Ubuntu 26.04, S3 + SigV4, bundled AWS SDK)	15m 23s
	50m 47s

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