P5's gate is 'a human clicks through it' and no document told a human how. The commands existed in boot.gd's header and scattered through a twelve-thousand-line DECISIONS.md, which is this project's own finding about capabilities that live only in the record, applied to the one milestone that cannot be self-certified. docs/port/RUNNING.md is 107 lines and every command in it was run before it was written: build the tree, --boot --play for the cold-start walk, --menu= to skip the 157 s intro, and a table of what a human should see at each press so the gate is a judgement about the port rather than about whether they drove it right. It does not claim P5 is met; it removes the excuse that the gate was hard to attempt. Three sections exist because a reader would otherwise report the container as a defect: what is knowingly missing (four of five destinations measured but in other archives, each printing what it would have opened; NEW GAME's skipped chain as a stated gap), what this container distorts (720p decodes +6.7-6.9% slow, the dummy audio driver means you hear nothing, the exit leak line is engine-side at 8 to 8), and how mod overrides report themselves. The Decoder reported BLOCKED.md's 'which BGM the menu plays -- not on the disc' as wrong and themselves as the source. The row has been struck and corrected for days, and I am telling them rather than silently fixing a live row -- their own asymmetry, that a wrongly-superseded row removes a live question from both views. The correction already contains the diagnosis they have just made. It says the negative is bounded -- the TABLES name no screen -- cites li r5 1103 and the byte-for-byte wave match, and ends: a row here must quote the reach of a negative, because a negative summarised without its bound reads as a bigger negative than it is. Their message reports arriving at the same thing independently. Fourth instance of the connection failure and the sharpest yet: the three before were an answer sitting unread, this one was an answer sitting ADDRESSED. Their method note inverts my own v1-to-v3 story and is the transferable part: my 'a report with a standing false positive is one nobody reads' nearly made them filter a 40-candidate sweep. Instead they measured what the false positives were -- guessed infrastructural nouns, 5 of 40; the real category was 'not on the disc' used as a classification legend -- and reading those found the one that was not. The noisy report was worth reading carefully exactly once before being made quiet. 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
-- and RUNNING.md, which is how you actually start it
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.