Worktree step1 vec simplify#686

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frankmcsherry wants to merge 8 commits intoTimelyDataflow:master-nextfrom

frankmcsherry:worktree-step1-vec-simplify

Commits on Mar 16, 2026

Step 1: Simplify to Vec<T>, remove Layout/WithLayout/LayoutExt tower

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Fix workspace crates and examples for Vec simplification

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Fix remaining BatchContainer method calls in dogsdogsdogs

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Remove dead code: BuilderInput, SliceContainer, ColumnationChunker, and all columnation vestiges

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Add Columnar constraint to Data trait and propagate throughout

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Propagate Columnar constraint to examples, docs, and HashWrapper

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Fix Columnar bounds in test files (bfs.rs, scc.rs)

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Add columnar crate to mdbook doc-tests

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