fix(tui): cohesion polish across all views

- Hide nonsense latency/histogram data for group monitors in detail view
- Add missing status colors to fmtStatusWord (LATE, STALE, PENDING, etc)
- Wrap Maint and Settings tabs in titled panels to match Monitors tab
- Standardize headers: breadcrumb style (History > Name, SLA > Name)
- Standardize footer key order: actions first, [q/Esc] Back last
- Add # column to Nodes table for consistency with all other tables
- Use titleStyle for section headers (CONFIGURATION, DAILY BREAKDOWN)
- Fix panel focus not switching when clicking monitor rows from logs panel

internal/tui/view_dashboard.go

@@ -198,10 +198,12 @@ func (m Model) viewDashboard() string {
 		}
 	case tabMaint:
 		m.contentWidth = m.termWidth
-		content = m.viewMaintTab()
+		availW := m.termWidth - chromePadH
+		content = m.titledPanel("Maintenance", m.viewMaintTab(), availW, true)
 	case tabSettings:
 		m.contentWidth = m.termWidth
-		content = m.viewSettingsTab()
+		availW := m.termWidth - chromePadH
+		content = m.titledPanel("Settings", m.viewSettingsTab(), availW, true)
 	}
 
 	content = strings.TrimSpace(content)