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docs: fourth bit-level attempt - frozen again, but caught in a minute

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Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01PMRJjbxLqZtsb5Vb7KunPE
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Sylpheed RE agent
2026-08-24 00:41:59 +00:00
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docs/re/mission-freeze-and-ob-flag.md
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@@ -251,3 +251,21 @@ Of the Stage 02 runs that have reached flight, roughly half end early — a free
or a GAME OVER when the escorted ACROPOLIS or the craft is lost — and the scan
needs the run to survive **two** counter transitions. Nothing here fixes that; it
is why three attempts produced one filter between them.
### A fourth bit-level attempt (2026-08-24) — the guard earned its keep
`ob_bitflag` now picks the counter's address itself from the three seen so far,
so the run started immediately at flight entry:
```
HUD=4 RAM=4 at 0xbdb59668
[A] counter=4 entities=31
[A] (offset,bit) pairs set on exactly 4: 207; clear on exactly 4: 22
GUEST FROZEN — the counter was never going to move
```
The freeze was caught in about a minute by `frozen()` instead of consuming the
whole 700 s window — which is the difference the guard makes, and the only thing
this attempt bought. Still **no verification**: four runs, four windows, zero
second transitions.