I wrote "whether the game snaps both clocks forward" into yesterday's F4 and the human asked which clocks. There are none: authored/flow.json sets `clock: "shared"`, so the title's two composited builds -- build 4 the artwork (finishes t~=118) and build 2/3 the plate (full alpha t=236) -- run on ONE clock started together. Left standing, that phrasing sends an agent hunting for a second clock this corpus says does not exist. Corrected in both briefs and in the playtest page, marked as a correction rather than silently edited. And the question is better than I first framed it. `clock: "shared"` is AUTHORED, and the port's own plate-arrival-halves.md calls it "not falsified... not confirmed to better than ~20 % either", with an unresolved anchor disagreement inside one binary: the reconciliation picked t=118 while settle_time() returns 160 and the boot prints "settles at t=160". So F4 is a TEST OF THAT PREMISE, and the discriminator is observable -- press (A) early, while the wordmark is still building in, and watch the ARTWORK rather than the plate: advances the shared clock -> the artwork SNAPS to finished only forces the plate -> the artwork KEEPS ANIMATING its build-in Both briefs now say to answer F4 before building on `shared`, and tell the port not to choose what "jump" means.
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.