Add frontpage link to the polygon editor

webapps/index.html

@@ -228,6 +228,22 @@
                     <a href="./geojson_viewer.html" class="app-btn">Open Viewer</a>
                 </div>
             </div>
+
+            <!-- Polygon Analysis Editor -->
+            <div class="app-card">
+                <div class="app-icon">🔷</div>
+                <div class="app-content">
+                    <h2>Polygon Analysis & Editor</h2>
+                    <p>Analyze field polygons for overlaps and self-intersections. Automatically clean geometries.</p>
+                    <ul class="app-features">
+                        <li>Overlap analysis</li>
+                        <li>Automated cleaning</li>
+                        <li>Log & CSV export</li>
+                        <li>Fix <30% overlaps</li>
+                    </ul>
+                    <a href="./polygon_analysis_editor/" class="app-btn">Open Editor</a>
+                </div>
+            </div>
         </div>
         
         <footer>