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handoff: Q6's count-match has disc support for its structure, and is still not a decode

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Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01Wuu56cE8vJGTBtn1ppsk8v
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sylph-decoder
2026-08-31 02:18:21 +00:00
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@@ -18,6 +18,40 @@ delivered.
## 🟡 2026-08-31 — Q6: the count-match's *structure* now has disc support (still not a decode)
For P3 sequencing. `boot-config-and-gamepart-registry.md` carries a count-match on
the title part's event numbers — *"Ⓑ = event 0, four menu items load an external
archive, `EXTRAS` stays inside `GP_TITLE`"* — flagged as an observation, not a
decode. **Half of it is a disc fact, and it holds.**
Every button record in all 16 `GP_TITLE` entries:
| entry | records | screen |
|---|---|---|
| 2/3 | `ptbtn00` | the `PRESS Ⓐ` plate |
| 5/8 | `ptbtn01`–`05` | main menu, 5 items |
| 6/9 | `ptbtn11`–`13` | `EXTRAS`, 3 items |
**Three button screens and no fourth** — so no `DIFFICULTY` build, and `DIFFICULTY`
is what `NEW GAME` opens. The other four destinations have their own archives
(`GP_OPTIONS`, `GP_SAVE_LOAD`, `GP_TUTORIAL`), and `EXTRAS`' own two items are
`GP_MISSION_SELECT` / `GP_MOVIE_THEATER` — so `EXTRAS` is the one destination
internal to `GP_TITLE`, and its children leave it.
🔴 **Still not a decode, and do not author from it.** This shows the *shape* the
count-match asserts is real on the disc. It does **not** show that event 3 is a
particular row. If P3 needs a button→event map, it does not have one.
❔ **And `DIFFICULTY`'s build is not located.** I searched every pak for an
8-button-record build, assuming its four items pair with `f` variants as
`GP_TITLE`'s screens do. They may not — so the negative is "not an 8-record
btn-named build anywhere", narrower than "not found".
[data](../re/data/gp-title-holds-three-button-screens.txt)
## ✅ 2026-08-31 — menu focus does NOT survive a reboot; your `NEW GAME` is a fresh-start value
**Measured without spending a boot.** Six runs had already captured the *first*