Backend: - Validate recharge_fee_rate: 0 ≤ rate ≤ 100, max 2 decimal places Frontend settings: - Add % suffix icon to fee rate input - Enforce max=100, min=0, step=0.01 with 2 decimal precision
Backend: - Validate recharge_fee_rate: 0 ≤ rate ≤ 100, max 2 decimal places Frontend settings: - Add % suffix icon to fee rate input - Enforce max=100, min=0, step=0.01 with 2 decimal precision