Every displayed timestamp previously relied on either the viewer's
browser-local timezone (toLocaleString/toLocaleDateString/toLocaleTimeString)
or raw UTC ISO-string slicing (.slice(0,10)/.slice(5,16)) — both wrong for
a Vietnam-based system, and the string-slicing approach could show the
wrong calendar date entirely near the UTC/GMT+7 day boundary. Added
frontend/src/utils/dateTime.ts with formatVN* helpers that explicitly
render in Asia/Ho_Chi_Minh regardless of the viewer's machine, and applied
them across AdminPage, OrderPanel's live clock, SignalPanel, ProfilePage,
AuditLogPage, and BacktestPage (including the new walk-forward fold/history
dates) — 10 display sites total.
Also consolidated the timeframe list (15m/30m/1h/4h/1d/1w/1M), which had
drifted into 4 different copies across BacktestPage, ProfilePage,
ChartToolbar, and AlertsPage, into a single frontend/src/utils/timeframes.ts
source of truth. Extended Walk-Forward's timeframe options from 1h/4h to
1h/4h/1d, and fixed a latent backend bug where backtest_engine.py's
tf_minutes map was missing "1d", silently defaulting to 30 minutes for
any daily-timeframe backtest.
Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
Le
56325113b3