Add Listening Post, improve setup and documentation

- Add Listening Post mode with frequency scanner and audio monitoring
- Add dependency warning for aircraft dashboard listen feature
- Auto-restart audio when switching frequencies
- Fix toolbar overflow on aircraft dashboard custom frequency
- Update setup script with full macOS/Debian support
- Clean up README and documentation for clarity
- Add sox and dump1090 to Dockerfile
- Add comprehensive tool reference to HARDWARE.md
- Add correlation, settings, and database utilities
- Add new test files for routes, validation, correlation, database

🤖 Generated with [Claude Code](https://claude.com/claude-code)

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

templates/satellite_dashboard.html

@@ -4,7 +4,7 @@
     <meta charset="UTF-8">
     <meta name="viewport" content="width=device-width, initial-scale=1.0">
     <title>SATELLITE COMMAND // INTERCEPT</title>
-    <link href="https://fonts.googleapis.com/css2?family=Orbitron:wght@400;500;700;900&family=Rajdhani:wght@300;400;500;600;700&family=JetBrains+Mono:wght@300;400;500&display=swap" rel="stylesheet">
+    <link href="https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700&family=JetBrains+Mono:wght@400;500;600&display=swap" rel="stylesheet">
     <link rel="stylesheet" href="https://unpkg.com/leaflet@1.9.4/dist/leaflet.css" />
     <script src="https://unpkg.com/leaflet@1.9.4/dist/leaflet.js"></script>
     <link rel="stylesheet" href="{{ url_for('static', filename='css/satellite_dashboard.css') }}">
@@ -247,8 +247,8 @@
                 worldCopyJump: true
             });
 
-            L.tileLayer('https://{s}.basemaps.cartocdn.com/dark_all/{z}/{x}/{y}{r}.png', {
-                attribution: '©OpenStreetMap, ©CartoDB'
+            L.tileLayer('https://{s}.tile.openstreetmap.org/{z}/{x}/{y}.png', {
+                attribution: '© OpenStreetMap contributors'
             }).addTo(groundMap);
         }