653e317197
Ran the suite after a session of edits to boot.gd, screen_view.gd, four tools and two authored files. Every asserting check passes, and verify-screen's two DIFFERS are the named pair with per-screen reasons. Two oracle rows moved: title_plate 12.83/0.00% to 13.04/0.09%, title_band 15.31/0.35% to 12.86/0.00%. Opposite directions, which is a phase change rather than a regression, and the cause is mine -- adding --leaf-time=0 to verify-capture's render sites pinned the sweeps while the captures froze them wherever the shutter caught them. That makes the capture-phase term concrete: I documented +/-5.56 for title from a sweep, and here it moved two published rows from a one-line harness change. It also touches a number I published -- the boot-end-frame 0.00% was measured before the pin, and the equivalent row now reads 0.09%. Both inside the term, and the right reading is that neither is 'the' number. Also narrowed the withdrawal-time hook. Its regex matched headings ABOUT corrections rather than headings making them, so 33 was a measurement of the regex; narrowed to a leading WITHDRAWN/CORRECTION/Refuted, it gives 10, all genuine retractions. Residual limit named: several of the ten are flagged because the registered phrase does not appear in that section -- the corrected JP heading reads 'does NOT go against the port', which does not contain 'goes against the port'. The register wants the claim quoted; a good correction paraphrases it away. 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.