feat(vortex-geo): add Hilbert scalar function

[HarukiMoriarty]

Summary

• add vortex.geo.hilbert for native geometry columns with constant Rect bounds
• reuse the existing GeoEnvelope kernel and unary constant/column dispatch
• return nullable u32 Hilbert keys for spatial clustering
• add point and multipolygon Divan benchmarks

[codspeed-hq]

Merging this PR will regress 1 benchmark

⚡ 2 improved benchmarks
❌ 1 regressed benchmark
✅ 1956 untouched benchmarks
🆕 13 new benchmarks
⏩ 89 skipped benchmarks¹

Warning

Please fix the performance issues or acknowledge them on CodSpeed.

Performance Changes

	Mode	Benchmark	BASE	HEAD	Efficiency
❌	Simulation	cold_misaligned[(64, 256)]	4.4 ms	5.3 ms	-16.99%
⚡	Simulation	decode_varbin[(1000, 2)]	78.5 µs	62.6 µs	+25.43%
⚡	Simulation	decompress[u64, (1000, 16)]	73.6 µs	65 µs	+13.16%
🆕	Simulation	linestrings	N/A	167.9 µs	N/A
🆕	Simulation	nullable_points	N/A	345.1 µs	N/A
🆕	Simulation	points	N/A	165.5 µs	N/A
🆕	Simulation	polygons	N/A	167.8 µs	N/A
🆕	Simulation	eight_points	N/A	3.7 ms	N/A
🆕	Simulation	nullable_eight_points	N/A	3.7 ms	N/A
🆕	Simulation	sixty_four_points	N/A	16.2 ms	N/A
🆕	Simulation	nullable_rectangles	N/A	12.5 ms	N/A
🆕	Simulation	rectangles	N/A	13.4 ms	N/A
🆕	Simulation	thirty_two_vertex_boundaries	N/A	52.7 ms	N/A
🆕	Simulation	envelope_of_collected_points	N/A	488.7 µs	N/A
🆕	Simulation	multipolygons	N/A	1.2 ms	N/A
🆕	Simulation	points	N/A	197.7 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 nemo/geo-hilbert-bounds (135eaa8) with develop (ff0a26d)²}

Footnotes

1. 89 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 nemo/geo-intersection-native (d84c82b) during the generation of this report, so develop (ff0a26d) was used instead as the comparison base. There might be some changes unrelated to this pull request in this report. ↩