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Establish docs/re/ as the spec-side of the clean-room: - README: confidence tiers (HYPOTHESIS/PROBABLE/CONFIRMED), promotion requires NEW independent evidence, append-only evidence logs, demote-on-contradiction, and a clean-room firewall (describe behaviour + cite addresses; never paste decompiled code). Documents the toolchain (sylpheed.db + zq.py, xenia-rs probes, Wine-Canary oracle) and the join-by-guest-PC method with the VA-equality caveat. - Function/structure templates + a seeded INDEX (9 already-reversed formats). - First entry: texture-color-k8888 — CONFIRMED plain k_8_8_8_8 is linear UNORM (no sRGB), channel order still to be measured. Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
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RE knowledge index
Confidence: ✅ CONFIRMED · 🟡 PROBABLE · ❔ HYPOTHESIS. See README.
Formats we've already reversed are, for now, documented by their parser + disc round-trip
tests (the executable spec) rather than a prose file — the "Spec" column points there.
Promote to a prose structures/…md file when a format needs behavioural notes beyond layout.
Data structures / formats
| Format | Conf. | Spec (parser + tests) | Notes |
|---|---|---|---|
IPFB .pak archive |
✅ | sylpheed-formats/src/pak.rs + tests/pak_idxd_disc.rs |
header + 12-byte TOC, Z1/zlib payloads |
| name-hash (TOC keys) | ✅ | sylpheed-formats/src/hash.rs |
Barrett-reduction hash; recovers original paths |
| IDXD object/table | ✅ | sylpheed-formats/src/idxd.rs |
self-describing; ship/weapon stats verified vs known values |
| XPR2 texture + cubemap | 🟡 | sylpheed-formats/src/texture.rs |
de-tile + A8R8G8B8; colours unverified (dynamic item) |
| T8aD 2D texture | 🟡 | sylpheed-formats/src/t8ad.rs |
~85% decode; colours unverified; ~15% variants deferred |
| RATC bundle | 🟡 | sylpheed-formats/src/ratc.rs |
child listing confirmed; one level deep |
| LSTA sprite list | 🟡 | sylpheed-formats/src/lsta.rs |
inline T8aD frames |
| IXUD subtitle | 🟡 | sylpheed-formats/src/ixud.rs |
timed cues; movie↔track link unknown (dynamic item) |
| Fonts (ttf/otf/ttc) | ✅ | sylpheed-formats/src/font.rs |
standard OpenType, parsed via ttf-parser |
Functions / code paths
None documented yet — populated during the dynamic-RE phase.
| Function | Conf. | Reimpl. | Summary |
|---|---|---|---|
| — | — | — | — |