Goal

Make the dashboard/mission control view the default landing experience, showing at-a-glance aggregate stats, attention items, active sessions, and recent completions.

Scope

• In: Restructure mission control as default view on launch, add attention section (failed/needs-input front and center), active sessions area, recent completions section, navigation to kanban/table/detail from dashboard
• Out: Sparklines/live graphs (data-constrained), multi-pane simultaneous layout (complex, future)

Acceptance Criteria

• Dashboard is the default view on launch (configurable to revert to table list)
• Summary stats section: active count, attention count, completed today, total tokens burned
• Attention section: shows sessions needing attention with graduated level and reason
• Active sessions: compact cards or rows for running/queued sessions
• Recent completions: last 5 completed sessions with outcome
• Navigation: can reach kanban, table list, and detail views from dashboard
• Config option default_view: dashboard|table|kanban in .gh-agent-viz.yml
• Existing mission control component refactored, not duplicated

Dependencies

• Parent: UI Rework: Make agent-viz more helpful and better looking #192
• Depends on: graduated attention levels sub-issue

Validation

Run go test ./internal/tui/.... Launch gh agent-viz and verify dashboard appears first. Navigate to all other views and back.