feat: add distinct scanner markers on map and radar

- Scanner positions shown as magenta stars (this scanner)
- Peer scanners shown as cyan stars
- Clear visual distinction from WiFi (orange circles) and BT (blue circles)
- Radar view also shows scanner as star shape

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

.gitignore

@@ -45,6 +45,9 @@ data/scan_*.json
 data/*.db
 data/profiles/
 data/logs/
+data/rf-mapper.log
+data/rf-mapper.pid
+data/rf-mapper.started
 
 # OS
 .DS_Store

src/rf_mapper/web/static/js/app.js

@@ -413,15 +413,23 @@ function drawRadar() {
     ctx.lineTo(w - 20, cy);
     ctx.stroke();
 
-    // Draw center point (you)
-    ctx.fillStyle = APP_CONFIG.colors.wifi;
+    // Draw center point (scanner) - magenta star-like
+    ctx.fillStyle = '#ff0080';
     ctx.beginPath();
-    ctx.arc(cx, cy, 8, 0, Math.PI * 2);
+    // Draw a star shape
+    const starRadius = 10;
+    for (let i = 0; i < 5; i++) {
+        const angle = (i * 144 - 90) * Math.PI / 180;
+        const x = cx + starRadius * Math.cos(angle);
+        const y = cy + starRadius * Math.sin(angle);
+        if (i === 0) ctx.moveTo(x, y);
+        else ctx.lineTo(x, y);
+    }
+    ctx.closePath();
     ctx.fill();
-    ctx.fillStyle = '#1a1a2e';
-    ctx.font = 'bold 8px sans-serif';
-    ctx.textAlign = 'center';
-    ctx.fillText('YOU', cx, cy + 3);
+    ctx.strokeStyle = 'white';
+    ctx.lineWidth = 1.5;
+    ctx.stroke();
 
     if (!scanData) return;
 
@@ -578,17 +586,49 @@ function updateMapMarkers() {
     const lat = parseFloat(document.getElementById('lat-input').value);
     const lon = parseFloat(document.getElementById('lon-input').value);
 
-    // Add center marker
+    // Add center marker (this scanner) - distinct star shape
+    const scannerIcon = `
+        <div style="position:relative;width:24px;height:24px;">
+            <svg viewBox="0 0 24 24" style="width:24px;height:24px;filter:drop-shadow(0 0 4px rgba(255,0,128,0.8));">
+                <polygon points="12,2 15,9 22,9 17,14 19,22 12,17 5,22 7,14 2,9 9,9" fill="#ff0080" stroke="white" stroke-width="1.5"/>
+            </svg>
+        </div>`;
     const centerMarker = L.marker([lat, lon], {
         icon: L.divIcon({
-            className: 'center-marker',
-            html: `<div style="background:${APP_CONFIG.colors.wifi};width:16px;height:16px;border-radius:50%;border:3px solid white;box-shadow:0 0 10px rgba(0,255,136,0.5);"></div>`,
-            iconSize: [16, 16],
-            iconAnchor: [8, 8]
+            className: 'center-marker scanner-marker',
+            html: scannerIcon,
+            iconSize: [24, 24],
+            iconAnchor: [12, 12]
         })
-    }).addTo(map).bindPopup('📍 Your Position');
+    }).addTo(map).bindPopup('📍 This Scanner');
     markers.push(centerMarker);
 
+    // Add peer scanner markers (async, won't block)
+    fetch('/api/peers')
+        .then(r => r.json())
+        .then(data => {
+            (data.peers || []).forEach(peer => {
+                if (peer.latitude && peer.longitude) {
+                    const peerIcon = `
+                        <div style="position:relative;width:20px;height:20px;">
+                            <svg viewBox="0 0 24 24" style="width:20px;height:20px;filter:drop-shadow(0 0 3px rgba(0,200,255,0.8));">
+                                <polygon points="12,2 15,9 22,9 17,14 19,22 12,17 5,22 7,14 2,9 9,9" fill="#00c8ff" stroke="white" stroke-width="1.5"/>
+                            </svg>
+                        </div>`;
+                    const peerMarker = L.marker([peer.latitude, peer.longitude], {
+                        icon: L.divIcon({
+                            className: 'peer-marker scanner-marker',
+                            html: peerIcon,
+                            iconSize: [20, 20],
+                            iconAnchor: [10, 10]
+                        })
+                    }).addTo(map).bindPopup(`📡 ${peer.name || peer.scanner_id}<br>Floor: ${peer.floor ?? '?'}`);
+                    markers.push(peerMarker);
+                }
+            });
+        })
+        .catch(() => {});  // Ignore errors
+
     const wifi = filters.wifi ? (scanData.wifi_networks || []) : [];
     const bt = filters.bluetooth ? (scanData.bluetooth_devices || []) : [];
 

src/rf_mapper/web/templates/base.html

@@ -48,6 +48,8 @@
             colors: {
                 wifi: '#f59f00',      // Orange for WiFi
                 bluetooth: '#4dabf7', // Blue for Bluetooth
+                scanner: '#ff0080',   // Magenta for scanner positions
+                peerScanner: '#00c8ff', // Cyan for peer scanners
                 warning: '#ffd93d',
                 danger: '#ff6b6b'
             },