refactor(array): allocate execution outputs through context

[gatesn]

Summary

Allocate execution outputs through the execution context.

Changes

• Propagate allocators through filter, take, interleave, and patches.
• Use context allocators in dictionary and scalar functions.
• Add tests for allocator propagation.

[codspeed-hq]

Merging this PR will degrade performance by 20.58%

⚠️ 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 regressed benchmarks
✅ 66 untouched benchmarks
🆕 6 new benchmarks
⏩ 2176 skipped benchmarks¹

Warning

Please fix the performance issues or acknowledge them on CodSpeed.

Performance Changes

	Mode	Benchmark	BASE	HEAD	Efficiency
❌	WallTime	mul_u64_nonnull_neon	15.2 µs	20.2 µs	-24.7%
❌	WallTime	multiply_shapes_neon[(16384, PerRowPerRow)]	17.2 µs	21.1 µs	-18.77%
❌	WallTime	mul_i64_nonnull_neon	17.1 µs	20.9 µs	-18.1%
🆕	WallTime	deferred_bool_neon[i32, ConstantPerRow]	N/A	4.5 µs	N/A
🆕	WallTime	deferred_bool_neon[i32, PerRowConstant]	N/A	5.3 µs	N/A
🆕	WallTime	deferred_bool_neon[i32, PerRowPerRow]	N/A	4.4 µs	N/A
🆕	WallTime	deferred_bool_neon[i64, ConstantPerRow]	N/A	5.9 µs	N/A
🆕	WallTime	deferred_bool_neon[i64, PerRowConstant]	N/A	7.2 µs	N/A
🆕	WallTime	deferred_bool_neon[i64, PerRowPerRow]	N/A	6.9 µs	N/A

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 ngates/buffer-allocator-execution (3c868b7) with develop (ba90f3d)²}

Footnotes

1. 2176 benchmarks were skipped, so the baseline results were used instead. If they were deleted from the codebase, click here and archive them to remove them from the performance reports. ↩

2. No successful run was found on ngates/buffer-allocator-builders (fd018db) during the generation of this report, so develop (ba90f3d) was used instead as the comparison base. There might be some changes unrelated to this pull request in this report. ↩