Add support for logical and physical codecs#1541

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timsaucer:feat/proto-codecs

Commits on May 14, 2026

feat: unify logical + physical proto codec stack via SessionContext

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test: FFI-example integration tests for codec + plan capsule APIs

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refactor: tighten PR1 scope to codec plumbing only

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remove unuseful code comments
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docs: rewrite codec module comments around purpose, not PR sequence

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feat(codec): forward every LogicalExtensionCodec /

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docs: tighten codec dispatch test docstrings

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refactor(ffi-example): MyExecutionPlan emits real data via

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refactor: drop dormant ExecutionPlan PyCapsule round-trip

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feat: PyExpr.to_bytes / from_bytes via session logical codec

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Commits on May 15, 2026

test(ffi-example): assert codec roundtrip restores plan output

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