cf3a9a0454
--boot --script= parsed, was stored, and did nothing. The script only starts at _menu_enter, and a --boot run without --play never enters a menu -- it holds on the title and quits. The run completed, exit 0, no menu line, no press: a clean result to a question never asked. This file already warns about that exact shape 600 lines above the bug, where --capture used to photograph the first frame of a scripted run. The warning was written, kept, and did not stop the same class recurring in the neighbouring flag. Now push_errors and exits 2, naming both working forms, refusing rather than implying --play since the two runs differ by 157 s of intro. Verified: --boot --play --script walks power-on through splashes, ADV, title, (A), main menu, down, (A). A comment above audio.play_bed described the port as CHOOSING the menu track, which HANDOFF Q10 refuted a week ago -- BGM_103 is measured on three independent legs and audio.json says so. Third instance of the drifted-comment trap. The dead phrase is now a check-claims register row, controlled: a planted revival fails and removing it passes. And the boot's wall-clock seconds are a property of this container. ADV takes 146.6 s of wall clock for 137.44 s of media, +6.7%, while S00A runs real time at -0.4%. Not a post-roll and not a general deficit: ADV is 1280x720 and S00A is 768x432, this box has no GPU, and 720p Theora decodes below real time here. The transcode is faithful against a 137.71 s source and the exporter does not rescale. P3/P7 artifacts quote seconds containing that deficit -- reproducible here, not a statement about the port or the game. Comparisons with the Decoder's measurements must go through media length, not wall clock; they carry an explicit emulator pacing factor for the same reason and I had been quoting mine as exact. Their negative result on LOAD GAME, TUTORIAL and OPTIONS leaves guard_focus_scope right to count them UNMEASURED rather than 'resets'. The transferable part is their instrument story: a narrow calibrated reader failed, so they generalised to a whole-frame comparison, which died the moment a crash dialog overlaid the frame while the narrow reader kept working. contract-check is deliberately narrow, individually anchored checks for the same reason, and the temptation after an ANCHOR LOST will be to loosen the matching -- trading a failure I can see for one I cannot. Every asserting check passes. 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.