3f2abebb60
They flagged five XPR_* texture toggles as relevant since I consume textures, and my off-edge splash residual -- non-tonal, ~0.5 RMSE above quantisation, no candidate -- has the shape a subtle decode difference would produce. Closed: the toggles live in texture.rs::decode_surface, shared by from_xpr2 and cube_faces_from_xpr2, and my exporter calls neither -- sprites come from t8ad::parse. t8ad.rs reads no environment variables in its 202 lines, so the sprite path has no hidden freedom either. The candidate is eliminated with no replacement. Enumerating what my exporter reaches turned up SYLPHEED_KF_TIME_SHIFT, which they reported as absent from crates/. True on their branch, false on mine: my ui_layout.rs is the stale era and the knob is live at line 497. The pinned tag has 0 occurrences (2 of LEGACY) so export/ cannot be perturbed, but verify-screen builds its reference from the workspace, which can. Tested both directions: with the knob the reference reports rest t=12, the corrected reading, and the era guard passes; without it, t=70 and the guard refuses. So the knob is the working remedy that makes a workspace-built reference usable, and it appeared in no tool, help text or instruction in my tree -- their exact class, in the lane I had just told them was clean. The refusal message now carries the remedy. 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.