fix: percent-encode X-File-Results header for non-ASCII filenames (#133)

Closes #133

apps/api/src/routes/tools/svg-to-raster.ts

@@ -320,7 +320,7 @@ export function registerSvgToRaster(app: FastifyInstance) {
       "Content-Disposition": `attachment; filename="batch-svg-to-raster-${jobId.slice(0, 8)}.zip"`,
       "Transfer-Encoding": "chunked",
       "X-Job-Id": jobId,
-      "X-File-Results": JSON.stringify(fileResultsMap),
+      "X-File-Results": encodeURIComponent(JSON.stringify(fileResultsMap)),
     });
 
     const archive = archiver("zip", { zlib: { level: 5 } });