Space Efficiency - denser layout with list-groups and inline labels

Child Tasks

• t-156.1 - Change task detail labels to inline format (ID: t-123 on same line) [Done]
• t-156.2 - Convert dashboard ready queue and recent activity to list-group pattern [Done]
• t-156.3 - Convert task list/search page to list-group pattern [Done]
• t-156.4 - Remove redundant borders, consolidate to margin OR padding only [Done]
• t-156.5 - Make filter buttons horizontal instead of vertical stacking [Done]
• t-156.6 - Audit and fix any remaining vertical button stacks [Done]
• t-156.7 - Convert timestamps to relative format (5 minutes ago) with exact date tooltip on hover/tap [Done]