The Overview header, an Overview row's account and freshness note, and the AI
Insights source line joined their parts with a hyphen while the Sessions and
Usage & Spend headers used a middle dot. They now share the middle dot.

With a day selected in a provider's cost chart, the readout above the chart,
the latest-day line below it, and the "Details for" heading all named the same
day and amount. The latest-day line is now hidden while a day is selected.

Co-authored-by: Simone <185146821+Lucenx9@users.noreply.github.com>
Co-authored-by: Claude Opus 5.5 (1M context) <noreply@anthropic.com>
Co-authored-by: Grok Bot <grok-bot@users.noreply.github.com>