✨ feat(mq-lang): add bytes operations

[harehare]

band, bor, bnot, pack/unpack, and bytes support for index/rindex/starts_with/ends_with/repeat

[Copilot]

Pull request overview

Adds bitwise byte operations (band, bor, bnot), binary pack/unpack with 18 numeric formats, and extends existing index, rindex, starts_with, ends_with, and repeat builtins to operate on Bytes. Type signatures are registered in mq-check, and extensive rstest-based unit tests are added.

Changes:

• New eval/builtin/bytes.rs module defining PackFormat plus pack_number/unpack_bytes helpers with full unit-test coverage.
• New band/bor/bnot/pack/unpack builtins in builtin.rs, plus bytes branches added to index, rindex, starts_with, ends_with, and repeat; documentation strings updated.
• Type-inference signatures for the new bytes operations registered in mq-check/src/builtin.rs.

Reviewed changes

Copilot reviewed 3 out of 3 changed files in this pull request and generated 2 comments.

File	Description
crates/mq-lang/src/eval/builtin/bytes.rs	New PackFormat enum and pack/unpack implementation with extensive tests.
crates/mq-lang/src/eval/builtin.rs	Registers new builtins, extends existing ones for Bytes, updates docs, adds tests.
crates/mq-check/src/builtin.rs	Registers type signatures for the new bytes-related builtins.

[codspeed-hq]

Merging this PR will not alter performance

✅ 29 untouched benchmarks

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_{Comparing feat/bytes-operations (6b784cf) with main (e6bfb35)¹}

Footnotes

1. No successful run was found on main (28d90b3) during the generation of this report, so e6bfb35 was used instead as the comparison base. There might be some changes unrelated to this pull request in this report. ↩