9f764150a2
Extract four shared layout widgets from the best existing implementations and adopt them across list/overview screens, deleting duplicated inline code. Layout/consistency only — no behavior change. New primitives (lib/widgets/): - app_section_header.dart — AppSectionHeader (azure accent bar + uppercase telemetry label; promoted from the dashboard's _sectionTitle). - app_metric_card.dart — AppMetricCard (uppercase label + mono value on a flat hairline surface; unifies KPI/stat tiles). - app_status_summary.dart — AppStatusSummaryRow/Item/Chip (dot + count + label, selectable; semantic AppStatusColors). - app_filter_bar.dart — AppFilterBar (responsive filter-row chrome). Adopted / de-duplicated: - Dashboard: _MetricCard now wraps AppMetricCard; section titles use AppSectionHeader (removed local _sectionTitle). - Tickets / Tasks / ISR: three separate summary-chip implementations (_StatusSummaryCard x2, _SummaryChip) collapsed into AppStatusSummaryRow. - Network Map overview: Sites/Devices tiles -> AppMetricCard (removed local _SummaryCard). - Workforce: "Duty Schedules" header -> AppSectionHeader with trailing chip. Verified: flutter analyze lib clean; flutter build web green; visual QA (tickets + ISR summary chips) in dark. Co-Authored-By: claude-flow <ruv@ruv.net>