/api/v1/me/payslips items and /api/v1/me/profile now carry the org base
currency. Payslip and Profile read it; the payslips screen formats with
the payslip currency, else the last profile's, else INR. INR output is
unchanged (rupee sign, lakh grouping, no decimals); other currencies show
the ISO code with their own minor units (AED 1,234.50, BHD 1,234.500).
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>