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docs: record radar field evidence

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Issue: #485
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Matysh
2026-09-09 03:54:09 +03:00
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docs/specs/485-radar-presence-stage1.md
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@@ -631,6 +631,14 @@ HA delivery, unexpected unknown coordinates, concave room, duplicate slots,
disconnected client, scale change and private-source canaries — not only moving
ideal points. Consented field CSV is supplementary, not a blocking dependency.
Field evidence received on 2026-09-08 was inspected locally and is not stored in
the repository. Its 68,367 observations covered all three LD2450 target slots
(47,350 / 18,344 / 2,673 rows). It confirms that `(x=0,y=0)` is the empty-slot
sentinel, while a zero on only one axis is a valid target coordinate and signed
X distinguishes the two sides of the radar. An approximately 1.4 m apparent
zone offset is recorded as Stage-2 calibration evidence; Stage 1 must not apply
an undocumented correction for it.
## 10. Performance, release and rollback
Baseline/candidate workload: 32 configured radars, eight slots each, four output