improvement: QRcode and shared link added to cases inorder to make it possible for staff users to share a case info with other staffs or other clinics.

backend/src/common/errors/error-codes.ts

@@ -42,6 +42,7 @@ export const ErrorCode = {
   PERMISSION_ACCESS_STAFF: 'PERMISSION_ACCESS_STAFF',
   PERMISSION_EDIT_STAFF: 'PERMISSION_EDIT_STAFF',
   PERMISSION_ORG_NOT_FOUND: 'PERMISSION_ORG_NOT_FOUND',
+  LAB_CASE_ACCESS_DENIED: 'LAB_CASE_ACCESS_DENIED',
 
   // Validation
   VALIDATION_FAILED: 'VALIDATION_FAILED',

backend/src/common/lab-case-access-token.ts

@@ -0,0 +1,11 @@
+import { randomBytes } from 'crypto';
+
+export function generateLabCaseAccessToken(): string {
+  return randomBytes(32).toString('base64url');
+}
+
+export function buildLabCaseShareUrl(accessToken: string, locale = 'en'): string {
+  const appUrl = (process.env.FRONTEND_URL || 'http://localhost:3001').replace(/\/$/, '');
+  const normalizedLocale = locale.trim() || 'en';
+  return `${appUrl}/${normalizedLocale}/lab-case/${accessToken}`;
+}