docs(wiki): DT-008 phantom-scan diagnosis + backfill bypass/relay-test concept pages

Two independent wiki updates bundled (all docs):

1. dingtian-dt008-reader.md: phantom optical decodes on the park-buzi EXIT
   reader (empty pre-opening site, low-sun afternoons). Chain of evidence:
   READ log lines carry the reader's own serial (H05MA5B0) → physical device,
   not a network source; snapshot shows nobody present; code shapes are the
   giveaway (6-digit numerics = checksum-less Interleaved 2-of-5, lone "C" =
   Code39/Codabar artifact) → 1D engine decoding sun-made stripe patterns
   (striped arm, fence shadows, glare). No fraud exposure (11-digit Luhn ids
   can't match); noise only. Fix on the entity page: vendor-tool symbology cut
   to QR+Code128 + min decode length, BOTH readers; config lives ON the device
   → re-apply after any factory reset/swap. Deliberately NOT filtering
   impossible codes server-side — probe recording is the anomaly path's job.

2. Backfilled two shipped-but-undocumented features (six code files already
   linked the first page as if it existed):
   - concepts/entry-presence-bypass.md — admin drops a FAULTY presence signal
     (granular radar/camera by decision, not a master switch); every flip is a
     signed config_change; persists till off; tickets stamped presenceBypassed;
     radar-bypass cooldown tradeoff; "the admin is not the adversary, but
     trusted never means invisible".
   - concepts/setup-relay-test.md — admin-only commissioning pulse, signed
     barrier_open_command BEFORE the fire so a test open never reads as the
     out-of-band-open fraud signal; saved controllers/declared relays only;
     radarAlert lamps excluded; pulseOpen only.
   Cross-linked from operator-issued-entry.md, cataloged in index.md, logged.

Claude-Session: https://claude.ai/code/session_01Xcm6ikLgGoCxxHrxtjkk5V

wiki/index.md

@@ -80,8 +80,10 @@ Counts: 4 sources · 19 entities · 47 concepts · 7 decision records.
 - [[challenge-response-auth]] — asymmetric nonce scheme for the ESP32 (auth + anti-replay).
 - [[entry-exit-readers]] — two populations, two integration paths; both can share a relay.
 - [[entry-exit-points]] — pool-of-spaces model (no lane); per-relay direction, reader→relay binding, camera snapshots.
-- [[entry-double-press]] — one car = one ticket: per-relay presence gate (loop OR radar) preferred, cooldown fallback; suppressed press = telemetry.
-- [[button-light-indicator]] — entry button lamp on a spare relay: radar × camera 3-state (blink/solid/off); aux-output; fails OFF.
+- [[entry-double-press]] — one car = one ticket: per-relay presence gate (loop OR radar) preferred, cooldown fallback (a real backstop since 2026-07-04); camera press-gate + post-hoc duplicate-plate anomaly (2026-07-04).
+- [[entry-presence-bypass]] — admin drops a FAULTY presence signal (radar/camera, granular) until support fixes it; every flip is a signed config_change; tickets minted under bypass are stamped (2026-07-02).
+- [[setup-relay-test]] — admin-only per-relay Test button in Setup; signs a barrier_open_command BEFORE the pulse so a test open never reads as fraud (2026-07-01).
+- [[button-light-indicator]] — entry button lamp on a spare relay: radar × camera 3-state (blink/solid/off); aux-output; fails OFF. The press gate enforces its SOLID state since 2026-07-04.
 - [[uhppote-vs-esp32]] — comparison: detection vs. prevention.
 
 ## Concepts — business domain