2939fa21d8
Fifth boot attempt this session, first clean one, using the harness debugged last iteration (env-safe input, wide capture window, signed-in profile, blanked X root). Reached the menu, held DOWN 2.5s wall-clock, armed the F10 draw capture, released, killed -- zero crashes. Achieved vs requested: 433 of 600 requested frames, spanning 14.43s of GUEST time against ~4.5s wall-clock for the hold+tail window -- this run went at ~3.2x real time (a cheap static menu, nothing pacing it to a display refresh). The 2.5s wall-clock hold covers roughly 8s of that guest time. Method: track one quad shape's position per frame via read_draws.py, not a screen diff -- the approach f1-menu-repeat-harness-built-not-answered.md already named as correct. Exactly one shape-group moves at all: one jump of ~0.21-0.225 NDC units (matching the known one-menu-item pitch), complete within 4 frames / 133ms guest time of arming, then flat (a ~0.0125 pulse wobble only) for the remaining 427 frames / 14.3s of guest time. Broadening the match threshold finds no other moving element. This is a STRONGER negative than the 2026-08-30 result it agrees with (that one sampled a screen diff at ~4-5fps for 2.0s; this reads every quad every frame for ~8s of guest-time held) -- it survives, rather than confirms, last iteration's "coarse sampling hid a fast repeat" alternative, which does not survive a per-frame instrument over a much longer window. Refutation attempt against my own prior lean, recorded: it does not survive. Reconciled, not left in conflict: the human's play-test and pad.py's "auto-repeats" warning almost certainly went through a REAL controller (Canary's SDL driver), which auto-repeats keystrokes at a documented upstream 400ms/100ms (guest time) via the REPEAT keystroke flag. The file driver deliberately never emits that flag, by design -- so it cannot show repeat regardless of how carefully or how long it's held, which is exactly the negative measured here. Still no F1 number; now a specific, well- evidenced reason the file driver alone will never produce one, and a named next step (add opt-in REPEAT-flag support to the file driver, matching the SDL driver's constants, then re-run this exact capture) -- not attempted this iteration, a second unit on an already-complete one. Reference data: docs/re/data/f1-cursor-quad-y-per-frame.tsv -- the derived per-frame Y position and guest tick, not the raw draw log itself (a capture artifact, kept uncommitted per the corpus's game-content rule).
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.