fix(wifi): radar bssidToAngle divisor, Firefox SVG transform-origin, zone label clarity

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

static/css/index.css

@@ -3856,6 +3856,7 @@ header h1 .tagline {
 .wifi-zone.far .wifi-zone-count { color: var(--accent-red); }
 
 .wifi-radar-sweep {
+    transform-box: view-box;
     transform-origin: 105px 105px;
     animation: wifi-radar-rotate 3s linear infinite;
 }

static/js/modes/wifi.js

@@ -1497,7 +1497,7 @@ const WiFiMode = (function() {
         for (let i = 0; i < bssid.length; i++) {
             hash = (hash * 31 + bssid.charCodeAt(i)) & 0xffffffff;
         }
-        return (hash >>> 0) / 0xffffffff * 2 * Math.PI;
+        return (hash >>> 0) / 0x100000000 * 2 * Math.PI;
     }
 
     function renderRadar(networksList) {

templates/index.html

@@ -923,7 +923,7 @@
                             <div class="wifi-zone-summary">
                                 <div class="wifi-zone near">
                                     <span class="wifi-zone-count" id="wifiZoneImmediate">0</span>
-                                    <span class="wifi-zone-label">Near</span>
+                                    <span class="wifi-zone-label">Close</span>
                                 </div>
                                 <div class="wifi-zone mid">
                                     <span class="wifi-zone-count" id="wifiZoneNear">0</span>