Index: frontend/src/lib/pdf-fonts.ts
===================================================================
--- frontend/src/lib/pdf-fonts.ts	(revision b8093a091d45f33bab33deb8ff2fffc4734972c0)
+++ frontend/src/lib/pdf-fonts.ts	(revision b8093a091d45f33bab33deb8ff2fffc4734972c0)
@@ -0,0 +1,32 @@
+import { jsPDF } from 'jspdf';
+
+let fontsLoaded = false;
+let regularFontBase64: string | null = null;
+let boldFontBase64: string | null = null;
+
+async function fetchFontAsBase64(url: string): Promise<string> {
+  const response = await fetch(url);
+  const buffer = await response.arrayBuffer();
+  const bytes = new Uint8Array(buffer);
+  let binary = '';
+  for (let i = 0; i < bytes.length; i++) {
+    binary += String.fromCharCode(bytes[i]);
+  }
+  return btoa(binary);
+}
+
+export async function loadCyrillicFonts(doc: jsPDF): Promise<void> {
+  if (!fontsLoaded) {
+    regularFontBase64 = await fetchFontAsBase64('/fonts/Roboto-Regular.ttf');
+    boldFontBase64 = await fetchFontAsBase64('/fonts/Roboto-Bold.ttf');
+    fontsLoaded = true;
+  }
+
+  doc.addFileToVFS('Roboto-Regular.ttf', regularFontBase64!);
+  doc.addFont('Roboto-Regular.ttf', 'Roboto', 'normal');
+
+  doc.addFileToVFS('Roboto-Bold.ttf', boldFontBase64!);
+  doc.addFont('Roboto-Bold.ttf', 'Roboto', 'bold');
+
+  doc.setFont('Roboto', 'normal');
+}