ImageProcessor: silhouette extension .svg → .png

Consumer modules ship new cameo-style raster silhouettes (PNG8, ~2 KB
each). Update the URL builder accordingly so getSilhouetteUrl() and
the silhouette branch of getHighlightImageUrl() produce reachable URLs.

Author: magicsunday

src/Processor/ImageProcessor.php

@@ -104,7 +104,7 @@ public function getSilhouetteUrl(): string
         ) {
             return $this->module->assetUrl(
                 sprintf(
-                    'images/silhouette-%s.svg',
+                    'images/silhouette-%s.png',
                     $this->individual->sex()
                 )
             );