9d43926231
Last iteration I pinned the leaf at phase 0 for reproducibility and said which pose the game shows was not settled by it. Asked the capture, with the decision rule stated first: the spread must beat the noise floor decisively or 0 stays an admitted arbitrary choice. Phase 0 is the global minimum at 13.2059, rising to 14.08 mid-cycle and returning to 13.2065 at 600 units -- margin 0.44-0.88 against a run-to-run floor of 0.0565, 8-15x, which meets the rule. 0 and 600 agreeing confirms the cycle closes, independently supporting the leaf's declared span. The Decoder's point is what makes it readable: the gamma offset moves every candidate together and nearly cancels in the ranking, so nine renders differing only in leaf phase compare cleanly on a ~13.2 floor nobody can remove. Broad minimum -- 0 and 15 units identical to four decimals -- so this constrains the phase to the first 15 units of a 600-unit cycle, not to a point, from one capture of one screen. And the sweep that nearly said the opposite: --leaf-time takes SECONDS, so my first sweep of 0..500 was 0 to 30000 units, every value past the group end, returning 13.2059 six times. Third instance of the seconds-versus-units confusion, after --time=50 and after I wrote the identical-output tell into METHOD. Made worse because 0 and 30000 genuinely coincide, so the flat reading was partly real. 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
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.