Server/plugin/support charges used Gregorian Date#setMonth, so 3 months from 1405/06/01 became 1405/09/02. Now add N Jalali months minus one day (1405/08/30).
Includes mobile auth, get_user/get_version, SMS wallet parity endpoints, appearance backfill, and related Prisma migrations.
Co-authored-by: Cursor <cursoragent@cursor.com>