feat: add qr signatures

packages/lib/constants/document.ts

@@ -77,4 +77,11 @@ export const DOCUMENT_SIGNATURE_TYPES = {
     }),
     value: DocumentSignatureType.UPLOAD,
   },
+  [DocumentSignatureType.QR]: {
+    label: msg({
+      message: `QR code`,
+      context: `Sign using a mobile phone via QR code`,
+    }),
+    value: DocumentSignatureType.QR,
+  },
 } satisfies Record<DocumentSignatureType, DocumentSignatureTypeData>;

packages/lib/constants/signatures.ts

@@ -2,3 +2,5 @@ export const SIGNATURE_CANVAS_DPI = 2;
 export const SIGNATURE_MIN_COVERAGE_THRESHOLD = 0.01;
 
 export const isBase64Image = (value: string) => value.startsWith('data:image/png;base64,');
+
+export const QR_SIGNATURE_TOKEN_EXPIRY_MINUTES = 10;