Add Mapbox static map generation for non-JavaScript users

- Implement MapImageService using Mapbox Static Images API
- Add server-side /table route with HTML form submission
- Generate static map images with auto-fit positioning based on actual location coordinates
- Add progressive enhancement with noscript fallbacks and Basic View button
- Update map center coordinates to proper Grand Rapids location
- Add numbered pins with color coding (red for regular, orange for persistent reports)
- Remove server-side caching to ensure fresh map images
- Fix theme toggle icon centering in CSS mixins

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

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

public/app.js

@@ -1,5 +1,5 @@
 document.addEventListener('DOMContentLoaded', () => {
-    const map = L.map('map').setView([42.9634, -85.6681], 10);
+    const map = L.map('map').setView([42.960081464833195, -85.67402711517647], 10);
 
     L.tileLayer('https://{s}.tile.openstreetmap.org/{z}/{x}/{y}.png', {
         maxZoom: 18,