feat(devices): radar presence input + button-light output on the controller

Model the entry button (I1) and a Hikvision radar (I2) as named children of the
access controller, and drive the button's 12V lamp on a spare relay.

- Radar = the existing relays[].presenceInput one-car-one-ticket gate, now labelled
  presenceKind: loop|radar. A radar may idle opposite the button, so add a per-input
  active-level override: relays[].presenceActiveLow -> driver inputActiveLow set,
  inverting just that terminal (pure helper inputActive()). The Dingtian has one
  board-wide resting level otherwise.
- AuxOutputDevice.setAux(channel,on) capability on the device interface (Dingtian
  latch) so business logic drives a NON-barrier lamp through the interface. Barriers
  still only pulseOpen — barrier-not-a-door preserved.
- ButtonLightController: subscribes to the radar input edge + the camera lane status
  and drives a 3-state lamp — radar+car=solid, radar-only=blink (~1Hz), else off.
  Fails OFF on host loss/error; de-duped. A radar detection never opens a barrier on
  its own (advisory; threat model).
- SetupWizard: presence kind + active-low + a button-light relay picker; sq+en i18n.

Tests: button-light.test.ts (truth table + blink + fail-OFF + de-dupe),
access-dingtian.test.ts (active-level inversion). Workspace build+lint+test green
(158 server tests). Wiki: hikvision-radar, button-light-indicator + updates.

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

apps/web/src/lib/i18n/sq.ts

@@ -376,6 +376,19 @@ export const sq = {
     entryCooldown: "Pritje pas biletës (sek)",
     entryCooldownHint:
       "Kur nuk ka sensor pranie: shtypjet e përsëritura të butonit shtypen për kaq sekonda pas një bilete. Zgjidhje rezervë (jo garanci) — një abuzues mund ta presë afatin.",
+    presenceKind: "Lloji",
+    presenceKindLoop: "Lak",
+    presenceKindRadar: "Radar",
+    presenceActiveLow: "Aktiv-ulët",
+    presenceActiveLowHint:
+      "Shëno nëse sensori i pranisë (p.sh. radari) qëndron HIGH në pushim dhe shkon LOW kur detekton — e kundërta e butonit. Kjo përmbys leximin e atij terminali që 'prania' të lexohet saktë.",
+    buttonLight: "Drita e butonit (rele rezervë)",
+    buttonLightRelay: "Rele",
+    buttonLightHint:
+      "Drita 12V e butonit e lidhur në një rele rezervë. Pulson kur radari detekton por kamera s'konfirmon makinë; ndizet fiks kur të dy konfirmojnë; përndryshe fiket.",
+    buttonLightBarrierWarn: "Kjo rele përdoret nga një barrierë — zgjidh një rele rezervë.",
+    blinkOnMs: "Pulsim ndezur (ms)",
+    blinkOffMs: "Pulsim fikur (ms)",
     addRelay: "+ Shto rele",
     // Camera ANPR opt-in.
     anpr: "Njohja e targave (ANPR)",