Phase 3 Complete: Web Interface MVP

Major Achievements:
- ✅ Full web interface (1,520+ lines of frontend code)
- ✅ Interactive Leaflet.js map with marker clustering
- ✅ Drag-and-drop upload system with GPS input
- ✅ Search & filter UI with multi-criteria
- ✅ Statistics dashboard with Chart.js
- ✅ Responsive mobile-friendly design

Backend:
- ✅ FastAPI static file serving
- ✅ Simplified server mode (main_simple.py)
- ✅ Improved startup script with port auto-selection
- ✅ PostgreSQL schema ready (requires setup)

Database:
- ✅ SQLite populated with 85 Flipper Zero signatures
- ✅ Device matching system operational
- ✅ Frequency-based search working

Documentation:
- ✅ PHASE_3_COMPLETE.md - Technical summary
- ✅ WEB_INTERFACE_README.md - User guide
- ✅ WEBAPP_STARTUP_GUIDE.md - Troubleshooting
- ✅ POSTGRESQL_SETUP_EXPLANATION.md - DB setup guide
- ✅ DATABASE_POPULATION_SUCCESS.md - Import report
- ✅ DEVICE_IDENTIFICATION_REPORT.md - Matching analysis

Files Created:
- templates/index.html (260 lines)
- static/css/main.css (500 lines)
- static/js/*.js (760 lines total)
- src/api/main_simple.py (simplified server)
- start_web.sh (auto port selection)

Status: Production MVP Ready
Next: Phase 4 - API & Integration

🛰️ Generated with Claude Code
https://claude.com/claude-code

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

static/js/main.js

@@ -0,0 +1,134 @@
+// GigLez - Main Application Logic
+
+// Navigation
+document.addEventListener('DOMContentLoaded', () => {
+    setupNavigation();
+    initializeApp();
+});
+
+function setupNavigation() {
+    const navLinks = document.querySelectorAll('.nav-link');
+    const sections = document.querySelectorAll('.section');
+
+    navLinks.forEach(link => {
+        link.addEventListener('click', (e) => {
+            e.preventDefault();
+
+            const target = link.getAttribute('href').substring(1);
+
+            // Don't navigate for external links
+            if (link.hasAttribute('target')) {
+                window.open(link.getAttribute('href'), '_blank');
+                return;
+            }
+
+            // Update active nav link
+            navLinks.forEach(l => l.classList.remove('active'));
+            link.classList.add('active');
+
+            // Show target section
+            sections.forEach(s => s.classList.remove('active'));
+            const targetSection = document.getElementById(`${target}-section`);
+            if (targetSection) {
+                targetSection.classList.add('active');
+
+                // Trigger section-specific actions
+                onSectionChange(target);
+            }
+        });
+    });
+}
+
+function onSectionChange(sectionName) {
+    switch (sectionName) {
+        case 'map':
+            // Refresh map tiles
+            if (window.map) {
+                setTimeout(() => window.map.invalidateSize(), 100);
+            }
+            break;
+
+        case 'stats':
+            // Load statistics
+            if (typeof loadStatistics === 'function') {
+                loadStatistics();
+            }
+            break;
+    }
+}
+
+function initializeApp() {
+    // Check API connection
+    checkAPIConnection();
+
+    // Load initial data
+    loadInitialData();
+
+    // Set up periodic refresh
+    setInterval(refreshData, 60000); // Refresh every minute
+}
+
+async function checkAPIConnection() {
+    try {
+        const response = await fetch('/health');
+        const data = await response.json();
+
+        if (data.status === 'healthy') {
+            console.log('✅ API connection healthy');
+        } else {
+            console.warn('⚠️ API connection unhealthy:', data);
+        }
+    } catch (error) {
+        console.error('❌ API connection failed:', error);
+    }
+}
+
+async function loadInitialData() {
+    // Load captures for map
+    if (typeof loadCaptures === 'function') {
+        await loadCaptures();
+    }
+}
+
+async function refreshData() {
+    // Refresh map data if on map view
+    const mapSection = document.getElementById('map-section');
+    if (mapSection.classList.contains('active')) {
+        if (typeof window.reloadMapData === 'function') {
+            window.reloadMapData();
+        }
+    }
+}
+
+// Utility functions
+function showNotification(message, type = 'info') {
+    // Simple notification system
+    const notification = document.createElement('div');
+    notification.className = `notification notification-${type}`;
+    notification.textContent = message;
+
+    document.body.appendChild(notification);
+
+    setTimeout(() => {
+        notification.classList.add('fade-out');
+        setTimeout(() => notification.remove(), 300);
+    }, 3000);
+}
+
+function formatFrequency(hz) {
+    return (hz / 1e6).toFixed(2) + ' MHz';
+}
+
+function formatDate(dateString) {
+    return new Date(dateString).toLocaleString();
+}
+
+function formatCoordinates(lat, lon) {
+    return `${lat.toFixed(6)}, ${lon.toFixed(6)}`;
+}
+
+// Export utilities
+window.showNotification = showNotification;
+window.formatFrequency = formatFrequency;
+window.formatDate = formatDate;
+window.formatCoordinates = formatCoordinates;