feat(anpr): subscriber-entry bridge + admin disable toggle

Wire the lane camera's vehicle event into the gated subscription flow: on a
vehicle/active push from an opt-in (config.anpr) camera, AnprBridge pulls a fresh
snapshot, runs ANPR, applies a stricter entry confidence floor, debounces, and —
matching the plate to a subscription BEFORE emitting — emits a kind:"plate" read.
The existing ReadDispatcher -> SubscriptionFlow then signs the entry/exit and opens
the barrier. A plate is never the sole authority: it routes through the same gate
(active/window/blocklist/car-count) as any credential. Fail-soft, fire-and-forget,
subscriber-only by construction. Field-verified end to end (plate AA504LX opened the
entry barrier and appended a signed vehicle_entry).

Add an admin master switch (site_config.anpr_entry_enabled, default ON) in Site
Settings that disables ONLY the barrier-driving bridge; advisory snapshot-ANPR and
lane busy/free are unaffected. Read live per event, so toggling takes effect with no
restart. Migration 0013 (additive ALTER ADD COLUMN, default 1).

- New: apps/server/src/anpr-entry.ts (AnprBridge) + tests (9)
- hikvision-alarm.ts hands vehicle detections to the bridge (fire-and-forget) + wiring tests (3)
- server.ts reorders the read flows above the hik-alarm registration
- snapshot.ts exports buildCamera for reuse
- env: VISION_ENTRY_MIN_CONFIDENCE (0.85), ANPR_DEBOUNCE_MS (12000)
- site route + SiteSettings checkbox + i18n (sq/en parity)
- wiki: lane-presence-and-anpr-entry / lpr-camera / index / log -> BUILT

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

apps/web/src/SiteSettings.tsx

@@ -26,6 +26,7 @@ export function SiteSettings({ canEdit }: { canEdit: boolean }) {
   const [meta, setMeta] = useState<Record<string, string>>({});
   const [exitVoucherDefault, setExitVoucherDefault] = useState(false);
   const [reserveSubs, setReserveSubs] = useState(false);
+  const [anprEntry, setAnprEntry] = useState(true);
   const [msg, setMsg] = useState<string | null>(null);
 
   function reload() {
@@ -38,6 +39,7 @@ export function SiteSettings({ canEdit }: { canEdit: boolean }) {
         setCapInput(c.capacity == null ? "" : String(c.capacity));
         setExitVoucherDefault(c.exitVoucherDefault);
         setReserveSubs(c.reserveSubscriberSpots);
+        setAnprEntry(c.anprEntryEnabled);
         const m: Record<string, string> = {};
         for (const { key } of META_FIELDS) m[key] = c[key] == null ? "" : String(c[key]);
         setMeta(m);
@@ -52,6 +54,7 @@ export function SiteSettings({ canEdit }: { canEdit: boolean }) {
       capacity: raw === "" ? null : Math.round(Number(raw)),
       exitVoucherDefault,
       reserveSubscriberSpots: reserveSubs,
+      anprEntryEnabled: anprEntry,
     };
     // Send each metadata field; "" → null is applied server-side.
     for (const { key } of META_FIELDS) (patch as Record<string, string | null>)[key] = meta[key] ?? "";
@@ -112,6 +115,18 @@ export function SiteSettings({ canEdit }: { canEdit: boolean }) {
               <span className="hint block">{t("site.reserveSubsHint")}</span>
             </span>
           </label>
+          <label className="flex items-start gap-2 text-[12px] text-term-text">
+            <input
+              type="checkbox"
+              className="mt-0.5 accent-term-amber"
+              checked={anprEntry}
+              onChange={(e) => setAnprEntry(e.target.checked)}
+            />
+            <span>
+              {t("site.anprEntry")}
+              <span className="hint block">{t("site.anprEntryHint")}</span>
+            </span>
+          </label>
           <div className="border-t border-term-border pt-3 text-[11px] uppercase tracking-wider text-term-muted">
             {t("site.parkDetails")}
           </div>