647390e1dc
Both agents asked for this and neither could do it: the register is the file they both read to decide what NOT to try, so two agents agreeing is not the authority for changing it (RETRO-2026-08-31-agreed §7.1). R1: a refutation whose instrument is one of our renderers is not a refutation, it is "our renderer disagrees" -- 🟡, not ❌. The motivating case was not careless work. "Blending those sprites additively worsens every measure against the capture" killed a real disc field for weeks, and read exactly like a publishable negative; the renderer behind it had a stale keyframe association, no leaf geometry and no rotation. Nothing in the entry could have told you. All 222 entries now end with ⟨instrument⟩, read off each entry's OWN stated evidence -- never inferred. An entry that states none gets `unrecorded`, which is 83 of them. Ten moved ❌ -> 🟡, each naming what would settle it: 8 render-vs-capture, 1 our-reader, 1 harness. Three things the pass turned up: * The rest() question is OPEN and had been reading as settled in both directions -- "rest = last keyframe" was refuted by a sibling argument, and that refutation refuted by correlating our render against captures. Both legs are our renderer. Which one you believed depended on which entry you found first, and it decides the pose every plateau-less element is drawn at. * A withdrawal never reached its sibling: "2 391 frames, max glyph 0" was withdrawn because a long-lived x11grab stream freezes and repeats a stale frame; the 1 674-sample negative three lines above it, same probe, was left standing as a reinstated measurement. * 83 of 222 -- 37 % -- record no instrument at all. Not disputed, not safe: unauditable, and larger than every other group combined. tools/stale-instrument is the --stale query the rule needs, because a colour alone re-opens nothing: the failure was that nothing re-opened a claim when the instrument that killed it improved. Its own --check found a real bug on the first run -- sys.exit("text") exits 1, so three faults documented as exit 2 were reporting the same code as an ordinary miss. R1 is now standing text in PROTOCOL.md, with R5's exception: our tool is the right instrument for a question about our tool.
Sylpheed
A clean-room reverse engineering and port project for Project Sylpheed: Arc of Deception (Xbox 360, 2007).
Three things live here, in one repository so that a change spanning them lands as one commit:
| The decoders | crates/sylpheed-formats — the disc's formats, read and verified disc-wide |
| The port | port/ — a Godot 4 project, plus crates/sylpheed-export which converts a disc into the open asset tree it reads |
| The corpus | docs/re/ — what has been reverse engineered, with its evidence, its retractions and its dead ends |
You need your own copy of the game. No game content is in this repository and none ever will be. The exporter reads the disc you supply.
The oracle is the real game
sylpheed-cliand the Explorer are tools for verifying our decoding. They are hypotheses under test and they have been wrong. When something must be checked against the truth, the truth is the game running in Xenia Canary, captured — not any renderer of ours.
This is stated first because getting it backwards is the most expensive mistake this project has made.
Layout
crates/
sylpheed-formats/ the decoders. Disc-wide verified; the corpus is its spec
sylpheed-cli/ headless tools -- render a screen, dump a table, probe audio
sylpheed-viewer/ the Explorer: a human's window onto the disc. STATIC data only
sylpheed-export/ disc -> the open, moddable asset tree
port/ the Godot 4 project. Reads open formats ONLY
authored/ decisions that are NOT on the disc, each with its reason
data/
base/ generated by the exporter. Gitignored, never hand-edited
mods/ drop-in overrides. Yours
docs/
re/ the corpus: findings, refutations, method traps
game/ how the game is navigated -- menus, modals, flight
port/ the port's mission, its handoff contract, modding rules
agents/ how the agent team works together
tools/ capture harnesses, probes, the share tool
exchange/ transient inter-agent files. NOT in git
docker/ the agent containers
Where to start
docs/re/INDEX.md— what is decodeddocs/re/REFUTED.md— what has been tested and dieddocs/re/METHOD.md— traps this project has already paid fordocs/game/navigation.md— how the game is navigateddocs/port/MODDING.md— why the asset tree looks the way it does
Xenia Canary is a separate repository: it is a fork tracking upstream, and it carries our instrumentation.
Conventions
Confidence is per claim, never per document: ✅ CONFIRMED · 🟡 PROBABLE ·
❔ HYPOTHESIS · ❌ REFUTED. A withdrawn result is kept with its reasoning
rather than deleted — that is why the numbers here can be trusted.