chore[row]: clean up the vortex-row impl

[joseph-isaacs]

No description provided.

[codspeed-hq]

Merging this PR will not alter performance

⚠️ Unknown Walltime execution environment detected

Using the Walltime instrument on standard Hosted Runners will lead to inconsistent data.

For the most accurate results, we recommend using CodSpeed Macro Runners: bare-metal machines fine-tuned for performance measurement consistency.

⚡ 3 improved benchmarks
❌ 5 regressed benchmarks
✅ 1505 untouched benchmarks

Warning

Please fix the performance issues or acknowledge them on CodSpeed.

Performance Changes

	Mode	Benchmark	BASE	HEAD	Efficiency
❌	Simulation	baseline_eq[4, 65536]	186.5 µs	239.2 µs	-22.04%
❌	Simulation	baseline_lt[16, 65536]	219 µs	276.8 µs	-20.88%
❌	Simulation	baseline_lt[4, 65536]	202.3 µs	254.4 µs	-20.49%
❌	WallTime	cuda/bitpacked_u8/unpack/3bw[100M]	299.9 µs	349.8 µs	-14.27%
❌	Simulation	baseline_eq[16, 65536]	231.4 µs	261.7 µs	-11.58%
⚡	Simulation	bitwise_not_vortex_buffer_mut[128]	275.3 ns	216.9 ns	+26.89%
⚡	Simulation	bitwise_not_vortex_buffer_mut[1024]	336.9 ns	278.6 ns	+20.94%
⚡	Simulation	bitwise_not_vortex_buffer_mut[2048]	400.6 ns	342.2 ns	+17.05%

Tip

Investigate this regression by commenting @codspeedbot fix this regression on this PR, or directly use the CodSpeed MCP with your agent.

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_{Comparing ji/fixup-vx-row (9f134b4) with develop (45e124d)}