Add voucher-line party (تفصیل) and allow cache-control CORS headers.

Supports accounting journal detail parties and preflight from the Vite client that sends Cache-Control/Pragma.

Co-authored-by: Cursor <cursoragent@cursor.com>

config/settings.py

@@ -154,9 +154,11 @@ CORS_ALLOW_HEADERS = [
     'accept',
     'accept-encoding',
     'authorization',
+    'cache-control',
     'content-type',
     'dnt',
     'origin',
+    'pragma',
     'user-agent',
     'x-csrftoken',
     'x-requested-with',