d181d8c0a1
Their instance was not a wrong number -- jp_title_session.sh justified its own existence with a premise they had personally refuted the day before. My sweep had looked for numbers, so it could not have found that shape. Swept mine for stale rationales instead. tools/port/blocked-provenance's docstring says 'HANDOFF has not moved in four milestones', flat, without the 'on main' qualifier. That is the exact claim this port withdrew in BLOCKED.md on 2026-08-30, where the missing qualifier was recorded as carrying the whole meaning: HANDOFF has moved over a hundred times, just not on the branch this checkout reads. And the tool's own reasoning needs the qualifier to work. Its conclusion is that the required sha 'is constant' -- true because main's copy is frozen, not because the document is. Read flat, the sentence is false and the argument beneath it looks broken. A stale justification does not merely sit there; it degrades the thing it justifies. Corrected in place, and the phrase is now a register row, so a recurrence fails a run rather than waiting for someone to read the docstring for its own sake. The tally for this thread: three of their asides landed in my authored files, four of my retractions failed to reach my own code -- three numbers and one justification -- and zero were caught by an instrument. Every one was caught by a person reading a sentence for its own sake. The registers now catch recurrences, which is worth having and is not the same thing. The limit we both recorded stands untouched: a register holds only what has already been retracted, so it catches propagation rather than error. Their ring_row.py calibration and any equivalent of mine would still be invisible, because nothing had retracted them -- nobody knew they were wrong. 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.