1facce5ddd
First end-to-end pass I have actually seen: all six asserting checks ok, oracle captures at 0.00-0.35%, verify-screen's 2 DIFFERS allowed for its stated reason. My two earlier attempts produced nothing -- one killed by my own timeout with block-buffered output, one wedged by the ffmpeg hang -- while I reported 'still two lines, both ok' for three iterations. I was treating absence of output as patience. Their discriminating test holds, prediction written down first: incoming build 4 gives an 8-frame decay, build 5 a 5-frame one against my predicted 6. Their tell reproduces from my export independently -- main_menu settled is [64], title's opening pair is [255,64], composite [64,255,64], and no single element produces it. The consequence neither of us predicted: A title->menu is sequential with a real ~5-frame black interval, B menu->title has NO black interval -- the incoming title draws at frame 34, before the outgoing quad ramps at 40. boot.gd applies black_hold uniformly, so the port inserts ~9 units of black on B that the game does not have. Not changed. One run of one transition is exactly the generalisation they just named as the error under two of their own wrong readings, and their second caution is that the A figure may be a load rather than a designed hold. Recorded as a known, stated divergence with a BLOCKED ask. Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01N7FiFFFwbvG2uxdcEh8HyF
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.