sylph-decoder 22846bf30e re: finish the --help audit -- a stale percentage and a missing noun, both shipped
The METHOD entry I wrote an hour ago says to read your tool's own --help as if a
stranger wrote it. I had done that for ONE of sixteen leaf commands, which is the
"a rule written down is not a rule applied" failure this corpus already records
twice. Finished it across the whole surface.

One survivor, and it fails in two ways at once. `screen render --settle` said a
narrow window means the bundle never settles, "(42 % of them, mostly loop*
fragments)".

MISSING NOUN: inside `screen render`, "them" reads as the builds you would render.
The 42 % is over composable bundles -- a different and much larger set including
~1 700 two-element fragments a user of that flag never renders. ui-settle-time.md
states its population precisely; the help inherited the number without it.

STALE: recomputed under the corrected reader, the composable figure is 862/2211 =
39 %, not 731/1758 = 42 %. The POPULATION GREW BY 453, which is the keyframe
record-layout fix's signature -- it times a group's final pose, so bundles that
previously showed one timed keyframe now show two and qualify. Third consequence
of that fix not being swept, after fade_quads.py and screen-transitions.md's
0.87-4.08 s fade-in.

And the share a --settle user actually faces is 38 %: 185 of 491 screen builds.

Corrected in the help text with all three numbers and their populations, and in
ui-settle-time.md, whose three-row table is marked pre-fix and superseded rather
than edited in place. Verified by artifact -- the tool's --help output is quoted,
not merely recompiled.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01Wuu56cE8vJGTBtn1ppsk8v
2026-08-30 17:45:43 +00:00

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-cli and 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

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.

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