896166caaf
The Decoder recorded a residual as odd rather than understood, with a plausible untested reading: GP_DIALOG has 140 entries against a 70-record table, adjacent pairing gives identical element-name sets on only 2 of 65 pairs, and the proposed explanation was that dialog text is baked into language-specific sprites so EN/JP entries differ by construction. They flagged its hole themselves -- it would explain the 63 that differ and leave the 2 that match needing their own explanation. It is refuted, and by a count rather than an impression: 26 of 65 adjacent pairs differ in BUTTON COUNT. Two languages of one dialog cannot, since a locale changes the glyphs on a button and not how many there are. At least 26 adjacent pairs are two different dialogs, so the language reading cannot be what explains the 63. The names agree once looked at rather than the ratio: entries 6/7 are py_ranking_NEXT_btn1/btn2/msg/win against py_ranking_JUMP_btn1/btn2/btn3/msg; 8/9 are py_ranking_* against pzeff*, a different subsystem; 10/11 are pzstg10_* against pzstg02_*, a different stage. It inverts the puzzle rather than solving it. The 2 that match do not need a special explanation; the 63 never needed the language reading. Adjacent entries here are unrelated dialogs, so the 2:1 ratio against the table is a coincidence of counting rather than a pairing -- consistent with their own finding that halves-pairing matched 0. Not claimed: that entries 0/1 and 2/3 ARE EN/JP pairs. Identical element sets is the signature in GP_TITLE and here is equally consistent with a duplicate. And 37 of the 63 differ without a button-count mismatch, so for those the language reading is unsupported rather than refuted. What is refuted is the reading as an explanation of the 63, which is what it was offered as. Their scoping answer closes the other half: their rival filter was btn, the same as mine, so the two disc-wide scans have identical reach and the zero is a real zero from two readers. Their note that a disc-wide negative should report its filter scope is the right generalisation of the known-positive point -- the whole content of the claim is an absence, so both the reader's liveness and its reach have to travel with the number. 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.