v1.6.0

Added

• The dashboard now shows a card with this month's most-used model, total tokens and cost.
• The Stats page has a date-range filter (Today/7d/30d/90d/All/custom), consistent with the Tasks page.

Changed

• Agent/session names throughout the UI now show the friendly name (e.g. "Iris") instead of the internal "orca-Iris" session id.