rust stage 3 (a+b): diff_compressor port + retire python via pyo3 + dotenv test hygiene#277

Merged

chopratejas merged 10 commits intomainfrom

rust-stage-3b-diff-bridge

Apr 26, 2026

Commits on Apr 26, 2026

feat(rust): diff_compressor port — byte-equal parity + sidecar stats
chopratejas
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refactor(rust): diff_compressor — surface hidden cutoffs + lossy-emit stats
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fix(diff_compressor): four silent information-loss paths in Python AND Rust
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fix(diff): close ContentRouter routing gaps for merge diffs and long preambles
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feat(rust): retire python diff_compressor, ship rust-only via pyo3
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fix(tests): stop module-level dotenv loaders from polluting os.environ during pytest collection
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ci: build rust extension via maturin before pytest
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ci: use maturin build + pip install instead of maturin develop
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ci: locate maturin-built .so via filesystem, not via import
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ci: use find instead of ls for shellcheck SC2012
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