sylph-decoder f6d49da612 re: two menu facts re-measured from the committed captures, no disc needed
Refutation attempt, per the adversarial duty. Target: this page's own row "B on
the main menu goes to the title". Chosen because it is one of only two Q5 rows
with an empty evidence cell, and because it is the only exit from the main menu,
so the port will build on it.

Whole-frame colour test for the pad-glyph discs. The main menu carries ZERO
red-B pixels anywhere in the frame, on two independent captures, while the same
unchanged detector finds 514 on EXTRAS and 518 on DIFFICULTY. The control passes
twice: the A glyph reads 438/438/440/438 across all four screens, so it is one
asset at one size and a B of that family could not have slipped under a
threshold. The main menu's legend is "Select / OK"; every submenu adds "Back".

The claim SURVIVES -- a legend is not behaviour, and an absent glyph cannot
refute an observed press -- but it is downgraded to amber. The observation is
uncited and single, it is now the only Q5 row the game's own text contradicts,
and there is a named confound: the title-side screens auto-return after ~8-10 s
idle, which looks exactly like what was described. Reading 0x828A690C while
pressing B would separate them in one run; that run needs a disc this container
does not have.

Second finding, same method. MISSION SELECT's "sixteen d-pad presses never left
Stage 01" was a LOCKED stage list, not a broken one. The labels have three
brightnesses, not two -- locked 104, unlocked 183, focused 254 -- and the
all-story-unlocked capture is the control that separates the lower two while
holding row 1 at an identical 254. On that save the cursor reaches Stage16 at the
bottom of a scrolled list. The list is 16 long and shows 8 at a time.

Regenerator committed beside the finding; it reads only files already in git.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_013UxPvE5cz7zekXBKi7Xw2r
2026-08-29 10:43:01 +00:00

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-cli and 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

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.

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