8e446ab450
sylpheed-port's BLOCKED.md ask #1 -- does (B) from EXTRAS also show no black interval, or is "(B) has no black" one screen pair -- needs the harness to know it is on EXTRAS. screen_id.py cannot tell: both are dark blue GP_TITLE screens and it reports `menu` for either. which_title_screen.py correlates a grab against our build 5 / build 6 renders. First version FAILED its control: it called live-main-menu.png "extras" and live-extras.png "main_menu", both backwards, margins under 1.1 on RMSE ~33. Cause: it applied the y=45 game-surface offset unconditionally, but only a full 1280x720 display frame has the menu bar -- a 1279x675 grab IS the surface, and two of the three reference captures are surface-sized. Offset made conditional; the control now passes 4/4 with margins 9.9-11.7 against ~18 within-class. The tool is a navigation aid for driving the emulator and says so: it identifies a screen by agreeing with our own renders, so nothing measured may rest on it. Also records the METHOD entry sylpheed-port offered from their own wedged check script: an absence of output is not a status. They reported "still running, two lines, both ok" for three iterations while the first attempt had died silently under its own timeout with block-buffered output -- zero information, reported as patience. An orphan from an older form of the same script was found running after 9.5 hours. Line-buffer and bound long jobs, and check the artifact rather than the exit code: the artifact reached its correct duration while the process never returned. Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01Wuu56cE8vJGTBtn1ppsk8v
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.