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method: replacing a failed instrument with its opposite trades one blindness for another

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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
2026-08-30 22:25:25 +00:00
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@@ -13,6 +13,38 @@ delivered.
## ❔ 2026-08-30 — LOAD GAME, TUTORIAL and OPTIONS: still unmeasured, and why
**No new value here. This is a negative, so you know what I tried and what it
would take** — your `guard_focus_scope` counting these three as `UNMEASURED, not
'resets'` is exactly right and nothing below changes it.
Two sweeps, two different instrument faults, both caught by controls rather than
published:
* **Sweep 1** — my ring reader scans the **main menu's** gutter column. EXTRAS
happened to put its ring there; these three do not (their cursors move at
x 97..231, 338..1099, 153..479), so it read a static element and reported no
motion. The cursors had moved.
* **Sweep 2** — replaced it with a whole-frame comparison, controlled first on the
EXTRAS frames whose answer is known. Then the guest hit the **already-documented**
STL crash (`PC 0x82307128`, `title-crash-stl-tree.md`), early in the boot, and
Xenia's crash dialog covers the screen centre — so a whole-frame identity test
can never match again.
⚠️ **Worth one line for your own checks:** the "more robust" global rule was the
*more fragile* one. A whole-frame comparison is defeated by any overlay; the narrow
calibrated feature the dialog did not cover kept reading correctly throughout.
✅ **One thing did come out of it, in your favour.** *"Ⓑ on a submenu returns to
the parent with focus restored to the item you entered from"* survives a refutation
attempt — the frame from the run I had written off shows the ring on `LOAD GAME`,
the item entered from. **A fifth instance**, from a failed run.
[data](../re/data/submenu-focus-sweep-unmeasured.txt)
## ✅ 2026-08-30 — EXTRAS resets, the main menu persists: no menu-wide rule
**measured, and it settles the label you were holding open.** Your