BRINGUP: the crash watch is done; item 6 is the head IRQ alone

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ScottW514
2026-08-31 19:31:15 -04:00
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@@ -1225,13 +1225,7 @@ Open items only. Anything closed is in `CAMPAIGN-LOG.md`.
5. **Update system Phase 5 — recovery refresh.** The remaining phase of
`docs/UPDATE-SYSTEM.md` (a refreshed recovery image in boot0); Phases 0–4
are done.
6. **Crash-watch bench commissioning, and the head IRQ (exploratory).**
Commission the crash watch on the bench, on the next image: a knock
inside an armed window must walk both tiers (`BUMP` holds and
releases after the quiet polls; `CRASH` stops motion and locks the
latch for the session), and judge the shipped thresholds against
that knock.
6. **Head IRQ (exploratory).**
Owed for the head IRQ, only if a coarse hardware interrupt is wanted
instead of the poll: arm the accel bit in the head MCU (reg 0x03/0x04),
watch GPIO3_22, and read reg 0x02 to identify and clear. The beam-detect