erio d149dbc91f fix(payment): enhance fee rate input validation and UI
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
2026-04-15 01:27:24 +08:00
..
2025-12-18 13:50:39 +08:00
2026-01-12 11:44:34 +08:00
2026-02-02 22:13:50 +08:00
2025-12-18 13:50:39 +08:00