c89e4da723
Applying the port's physical-story rule to my own number. '1 697 fallback fires return a visible pose' was published as if it were a defect count; it is not, since an element that genuinely ends visible should rest visible. The first correction split the 1 697 by whether the element's LAST keyframe is visible: 347 correct, 1 350 transient peaks. Plausible, arithmetic fine, and WRONG -- 12 278 of 13 991 elements (87.8 %) end at alpha 0 because a screen's exit ramp drives everything to zero, so the split carries almost no information. The 1 350 is not published. What survives needs no such split: the fallback runs only when no two adjacent poses are equal, i.e. only when no pose is held, so every pose it can return is un-held by construction -- and 1 457 of the 2 305 times it returns the element's MAXIMUM alpha, the brightest un-held pose. I ran that control only because the port had just been bitten by the same exit ramp, its census calling ptmsg -- the main menu's permanent footer -- 'a 2-unit flash'. Without its message the 1 350 would have shipped. METHOD gains the sharpened form: the physical-story test catches confident FALSE claims, not just nulls. A wrong number usually still has a story, just an absurd one. Plus the tell that its fix was right -- re-keyed on the screen's span, the false positives fell out on their own, and a definition that stops needing hand-maintained exceptions is usually the correct one. 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.