correct transactions_generator_buffer type

[arvidn]

It's a Vec<u8> right now, which technically is correct, but generate_type_stub.py specifies all Vec<> as List[]. The Bytes type is a thin wrapper around Vec<u8> meant to be translated to bytes in the python type stubs.

This corrects the type of transactions_generator_buffer to be bytes rather than List[uint8]. This was the original intention.

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Note

Low Risk
Refactor of an existing field’s Rust/Python typing and serialization helpers on block types; no new protocol semantics, with roundtrip tests still in place.

Overview
transactions_generator_buffer on FullBlock and UnfinishedBlock is now Option<Bytes> instead of Option<Vec<u8>>, so Python stubs expose Optional[bytes] rather than list[uint8].

v1 Streamable digest/stream/parse paths delegate to Bytes’s Streamable impl instead of hand-rolling length-prefix + raw bytes; wire encoding should stay the same. Rust and Python tests were adjusted (e.g. .to_vec() in assertions, v1 helpers pass bytes directly).

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[arvidn]

@cursor review

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[coveralls-official]

Coverage Report for CI Build 30916605576

Coverage increased (+0.02%) to 81.924%

Details

• Coverage increased (+0.02%) from the base build.
• Patch coverage: 2 uncovered changes across 2 files (22 of 24 lines covered, 91.67%).
• 3 coverage regressions across 1 file.

Uncovered Changes

File	Changed	Covered	%
crates/chia-protocol/src/fullblock.rs	12	11	91.67%
crates/chia-protocol/src/unfinished_block.rs	12	11	91.67%

Coverage Regressions

3 previously-covered lines in 1 file lost coverage.

File	Lines Losing Coverage	Coverage
crates/chia-protocol/src/bytes.rs	3	90.99%

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Coverage Stats

Relevant Lines:	20032
Covered Lines:	16411
Line Coverage:	81.92%
Coverage Strength:	11586080.48 hits per line

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💛 - Coveralls