## What changed
Add daily stacked bar rendering in the TUI analytics module, staged for dashboard integration.
- Plot three categories plus an Other remainder without renormalizing values, with separate positive and negative bands for signed credits.
- Add readable numeric axes, calendar ticks, a selection cursor, and a callout showing the authoritative daily total. Distinguish missing days from zero usage.
- Keep the selection visible in narrow viewports and omit labels that cannot fit without truncation.
- Use terminal palette colors for series and adapt secondary text to terminal color support and background.
## Testing
Add unit and snapshot coverage for axis scaling, signed bars on light and dark terminals, missing and zero values, narrow layouts, tiny segments, authoritative totals, and duplicate-date remainders.
GitOrigin-RevId: 2ed58def17abd14e77929016a54fd20e91d45670
af3bc6f796