feat([2fd88f42]): add adjustable marker radius and collapse filters by default

heatmap-tool/frontend/src/App.tsx

@@ -23,6 +23,7 @@ function App() {
   const [heatmapData, setHeatmapData] = useState<HeatmapPoint[]>([]);
   const [isLoading, setIsLoading] = useState(false);
   const [error, setError] = useState<string | null>(null);
+  const [radiusMultiplier, setRadiusMultiplier] = useState(1);
 
   const handleUploadSuccess = (newFilters: FilterOptions) => {
     setFilters(newFilters);
@@ -60,21 +61,35 @@ function App() {
         </header>
         <main className="App-main">
             <div className="control-panel">
-            <FileUpload
-                onUploadSuccess={handleUploadSuccess}
-                setIsLoading={setIsLoading}
-                setError={setError}
-            />
-            <FilterPanel
-                filters={filters}
-                onFilterChange={handleFilterChange}
-                isLoading={isLoading}
-            />
+              <FileUpload
+                  onUploadSuccess={handleUploadSuccess}
+                  setIsLoading={setIsLoading}
+                  setError={setError}
+              />
+              <FilterPanel
+                  filters={filters}
+                  onFilterChange={handleFilterChange}
+                  isLoading={isLoading}
+              />
+              <div className="map-controls" style={{ marginTop: '20px', paddingTop: '20px', borderTop: '1px solid #555' }}>
+                <h3>Map Settings</h3>
+                <label htmlFor="radius-slider">Marker Size: {radiusMultiplier.toFixed(1)}x</label>
+                <input
+                  type="range"
+                  id="radius-slider"
+                  min="0.1"
+                  max="5"
+                  step="0.1"
+                  value={radiusMultiplier}
+                  onChange={(e) => setRadiusMultiplier(parseFloat(e.target.value))}
+                  style={{ width: '100%' }}
+                />
+              </div>
             </div>
             <div className="map-container">
             {isLoading && <p>Loading map data...</p>}
             {error && <p className="error">{error}</p>}
-            <MapDisplay heatmapData={heatmapData} />
+            <MapDisplay heatmapData={heatmapData} radiusMultiplier={radiusMultiplier} />
             </div>
         </main>
         </div>