梁建民 / scm_app

- Rename form fields to snake_case convention (applyType → apply_type, orderNo → order_no, customerName → customer_name, amount → apply_fee_amount, deductionType → relief_detail, reason → relief_reason)
- Add form validation method to check required fields before submission
- Implement fee approval API integration with handleSubmit method using request utility
- Add status field initialization (待处理) to form data
- Simplify field selection handlers to store only display names
- Update API base URL from scwms.ichunt.net to scv2.ichunt.net
- Import API and request utilities for backend communication
- Add success/error handling with user feedback via toast notifications