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sepehrsadri merged 1 commit into from
Aug 8, 2026
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CHANGELOG: backfill M3 and #28 (xfail bug fixes) entries #30

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16 changes: 16 additions & 0 deletions CHANGELOG.md
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Expand Up @@ -20,6 +20,11 @@ Building the 0.0 pilot — no released artifact yet.
- **M2** — Logic/GarageBand `ProjectData` container walker: `wit-logic`, covering both
`.logicx` and `.band` (same container, same magic bytes), with record framing, a tag
census, and whitelist name/tempo extraction — [PR #25](https://github.com/sep-lab/Wit/pull/25)
- **M3** — Index, content-addressed store, CLI: `wit-index`, plus `wit scan` and
`wit dupes` on `wit-cli` — covers Logic, GarageBand, and Ableton discovery, archiving
every version into a local store keyed by content hash. Originally reviewed and merged
as [PR #26](https://github.com/sep-lab/Wit/pull/26), which was opened against the wrong
base branch and never reached `main`; corrected via [PR #29](https://github.com/sep-lab/Wit/pull/29)
- **M4** — Audio engine: `wit-audio`, covering `symphonia`-based decode
(wav/aiff/caf/alac/flac/mp4/mp3/aac) with a typed, never-panics `DecodeError`; `i8`
min/max peak computation for waveform rendering; `realfft`-based FFT cross-correlation
Expand All @@ -34,6 +39,17 @@ Building the 0.0 pilot — no released artifact yet.
- Open-source project scaffolding: license, contributing guide, code of conduct, security
policy, issue/PR templates, CI

### Fixed
- All 13 bugs documented as `xfail` in the Python prototype test suite (21 xfail markers
total), spanning robustness (billion-laughs expansion, unbounded tree allocation,
quadratic varint DoS in `flp_parse`, a leaked file descriptor, an oversized-payload
acceptance bug, bare `IndexError`/`struct.error` on truncated input) and correctness
(`decode_text` mojibake in both directions, `build_model` crashing on non-Live XML,
Live 12.3's `MainTrack` tempo being invisible to the differ, non-deterministic diff
ordering, two rename-coalescing false positives, and `cdc_dedup.pairwise()`
undercounting reuse — the last of which required re-measuring and correcting
`EXPERIMENTS.md` §6a) — [PR #28](https://github.com/sep-lab/Wit/pull/28), closes #10

### Findings that shaped the design
- Byte-level versioning of rendered audio is not viable: a global gain change leaves
**0.00%** of bytes reusable, and costs git a full extra copy
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