fix(inventar-web): suppress prerender 404 for missing favicon.png

App only provides favicon.svg; the PWA plugin's default includeAssets
list also includes favicon.png which triggers a prerender error.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

apps/inventar/apps/web/svelte.config.js

@@ -8,6 +8,13 @@ const config = {
 		adapter: adapter({
 			out: 'build',
 		}),
+		prerender: {
+			handleHttpError: ({ path, message }) => {
+				// Ignore missing PNG assets (app only provides favicon.svg)
+				if (path.endsWith('.png')) return;
+				throw new Error(message);
+			},
+		},
 	},
 };