mt5_parser:
- Remove deprecated infer_datetime_format (removed in pandas 2.0)
- Add ISO datetime format fallback for CSV imports (YYYY-MM-DD)
- Fix missing comment column in _enrich causing KeyError on plain CSVs
Trade Analysis:
- Add daily P&L bar chart below equity curve
- Add drawdown panel below daily P&L
- Fix NaT in date filter when open_time has null values
Batch Backtest:
- Fix read_utf16/write_utf16 to detect and preserve original encoding
- Fix _clear_use_default_flags to clear bit 2 on all parameters
- Fix snapshot approach for report finding — before/after file scan
- Fix cleanup to remove all new htm files after each run
- Fix report selection to prefer named file over newest fallback
- Apply all encoding and flag fixes to CLI script mt5_batch_backtest.py
- Add monthly performance table (year x month grid) with $ / % toggle
and Initial Balance input alongside the toggle
- Add equity curve overlay toggles: Account total, By Strategy,
By Symbol, By Day of Week — checkboxes above each chart
- Fix all chart backgrounds to transparent for light/dark compatibility
- Fix chart grid and font colours to work on both themes
- Monthly table and equity overlays added to Overall, By Strategy
and By Symbol modes
Trade Analysis:
- Add toggleable equity curve overlays: Account total, By Strategy,
By Symbol, By Day of Week — checkboxes above each chart
- Fix all chart backgrounds to transparent (inherit page theme)
- Fix grid and font colours to work on both dark and light backgrounds
Settings page:
- Full theme control: Dark / Light / Custom radio with Apply button
- Custom mode: colour pickers for accent, page bg, sidebar bg, text,
font selector and base dark/light toggle
- Preview swatches before applying
- Discard / Reset to Dark button
- Text size: Normal / Large (+2px) / Extra Large (+4px) via CSS injection
- inject_theme_css() helper for app.py to apply font size on all pages
- Theme written to .streamlit/config.toml on apply
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