feat: add configurable table page sizes

[MichaReiser]

Allow input, interned, and tracked structs to select 128-, 256-, 512-, or 1024-slot table pages while retaining 1024 as the default.
Smaller pages reduce unused slot capacity for sparse ingredients, while the tagged ID layout keeps mixed page sizes safe in one database.
Testing: Passed formatting, strict Clippy, full Nextest, no-default-feature, docs, Shuttle, Miri, and benchmark-build checks.

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[codspeed-hq]

Merging this PR will improve performance by 6.62%

⚡ 1 improved benchmark
✅ 10 untouched benchmarks
🗄️ 22 archived benchmarks run¹

Performance Changes

	Mode	Benchmark	BASE	HEAD	Efficiency
⚡	WallTime	hot_cache_hits[1024]	163.2 µs	153.1 µs	+6.62%

Tip

Curious why this is faster? Comment @codspeedbot explain why this is faster on this PR, or directly use the CodSpeed MCP with your agent.

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_{Comparing MichaReiser:configurable-page-sizes (f12797f) with master (3084912)}

Footnotes

1. 22 benchmarks were run, but are now archived. If they were deleted in another branch, consider rebasing to remove them from the report. Instead if they were added back, click here to restore them. ↩