fix(datetime): use Vietnam timezone for dates and display (!16) · Merge Requests · ThinhNC / finwise-miniapp-fe

fix(datetime): use Vietnam timezone for dates and display

Summary

Standardize frontend date input, conversion, filtering, and display using Asia/Ho_Chi_Minh.

Key Changes

Added centralized frontend business-time utilities.
Displayed absolute timestamps explicitly in the Vietnam timezone.
Sent Transaction, Budget, and Saving Goal dates as YYYY-MM-DD.
Removed device-timezone-dependent date parsing.
Removed the artificial noon workaround from Transaction forms.
Interpreted transfer and contribution datetime-local values as Vietnam wall-clock time.
Converted datetime inputs to offset-aware UTC ISO timestamps before API submission.
Built report date boundaries using Asia/Ho_Chi_Minh.
Removed timezoneOffsetMinutes from report requests.
Updated Transaction filters, Budget filters, Saving Goal filters, clocks, and date displays.

API Contract Changes

Transaction date: YYYY-MM-DD
Budget startDate/endDate: YYYY-MM-DD
Saving Goal targetDate: YYYY-MM-DD
Report responses use timeZone: "Asia/Ho_Chi_Minh"
Report requests no longer send the device timezone offset.

## Summary

Standardize frontend date input, conversion, filtering, and display using `Asia/Ho_Chi_Minh`.

## Key Changes

- Added centralized frontend business-time utilities.
- Displayed absolute timestamps explicitly in the Vietnam timezone.
- Sent Transaction, Budget, and Saving Goal dates as `YYYY-MM-DD`.
- Removed device-timezone-dependent date parsing.
- Removed the artificial noon workaround from Transaction forms.
- Interpreted transfer and contribution `datetime-local` values as Vietnam wall-clock time.
- Converted datetime inputs to offset-aware UTC ISO timestamps before API submission.
- Built report date boundaries using `Asia/Ho_Chi_Minh`.
- Removed `timezoneOffsetMinutes` from report requests.
- Updated Transaction filters, Budget filters, Saving Goal filters, clocks, and date displays.

## API Contract Changes

- Transaction `date`: `YYYY-MM-DD`
- Budget `startDate/endDate`: `YYYY-MM-DD`
- Saving Goal `targetDate`: `YYYY-MM-DD`
- Report responses use `timeZone: "Asia/Ho_Chi_Minh"`
- Report requests no longer send the device timezone offset.