27b2d957e2
Their sharpening of my harness-note finding: a why in an authored file has a convention demanding a citation; a docstring has nothing, travels with the code, and reads as authoritative. Their instance was ring_row.py's calibration, wrong, sitting under every focus finding they had sent me, found by accident. Swept mine for numbers I had corrected in DECISIONS.md. Three live instances, each contradicting my own log. video.rs asserted '28 % of S00A's frames presented and 47 % of ADV's' as measured; boot.gd asserted that the same numbers 'refuted the claim outright'; dialog_rows.rs said 'by three routes'. All three were retracted days ago in the log and never in the code -- the percentages came from contended runs and the counter is an upper bound that goes vacuous once the engine outruns the stream, and three routes became two, one compound. verify-transcode-fidelity was the only one already correct. Third time this pattern has bitten me, and it is the one audio.json's own why warns about: a correction that does not reach the artifact a consumer reads has not been made. First was loop_why shipping a refuted story into manifest.json, second a BLOCKED row, this is code comments -- the worst of the three because they sit beside the thing they describe. So the class is now checked rather than swept: the retracted numbers are register rows carrying the propositions they asserted, and check-claims immediately failed on my own corrections quoting them unmarked. The next stale number of this kind fails a run instead of waiting for a sweep. What it does not cover is a docstring number that was never corrected anywhere. The register holds only what I have already retracted, so it catches propagation failures rather than wrong numbers -- their ring_row.py case would still have gone undetected here, because nothing had retracted that calibration. Their closing observation is the honest limit: the only thing that has actually caught these is one of us reading the other's sentence for its own sake, which is not a filter and does not scale. 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.