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find / -xdev turns up no ISO, no default.xex and no GP_TITLE.pak; /exchange is empty; SYLPHEED_DISC is unset; sylph-doctor agrees. Everything else in the container is healthy -- xenia_canary is built, :98 is up, screenshot works, Vulkan enumerates. There is simply no game to boot. The cause is in the launcher. Before06676d3, sylph-agent bind-mounted the human's working tree at /work, and the ISO and sylph_extract/ live in that tree, so the disc arrived incidentally with the repository mount.06676d3replaced that with `-v sylpheed-decoder-repo:/work` -- correct for the collision class it was written for -- and nothing was added to replace the disc. sylph-decoder still forwards SYLPH_ISO, but as a bare environment variable naming a host path that does not exist inside the container. sylph-port mounts the disc explicitly, so the one container that owns the disc and the oracle is the one without them. This shuts the oracle, every sylpheed-cli call that names a pak, the disc-gated tests, and -- because the XEX is on the disc -- the static PPC route too. It does not touch the committed corpus, which is what this iteration worked from. A second, smaller casualty of the same migration: no git identity is configured anywhere, so the first commit in a fresh container fails outright. Both are recorded with their fixes; neither is worked around, since the launcher runs on the host and this container cannot restart itself. Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_013UxPvE5cz7zekXBKi7Xw2r
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.