v0.9.1

Fixed

• Heatmap and today's tokens no longer include prior days — sessions resumed across midnight credited their full lifetime tokens to today's aggregates and the hourly heatmap. Both are now bucketed by each message's own timestamp.
• Session detail timestamps now show dates across day boundaries.
• Process liveness detection on Windows.
• Time-sensitive store tests that assumed March 2026 dates.

Changed

• Expanded tool call detail in the session view.