feat: bulk delete, team dispatch, calendar views, timeline colors

- Multi-select bulk delete in all 5 list views (Artefacts, Posts, Tasks,
  Issues, Assets) with cascade deletes and confirmation modals
- Team-based issue dispatch: team picker on public issue form, team filter
  on Issues page, copy public link from Team page and Issues header,
  team assignment in IssueDetailPanel
- Month/Week toggle on PostCalendar and TaskCalendarView
- Month/Week/Day zoom on project and campaign timelines (InteractiveTimeline)
  and ProjectDetail GanttView, with Month as default
- Custom timeline bar colors: clickable color dot with 12-color palette
  popover on project, campaign, and task timeline bars
- Artefacts default view changed to list
- BulkSelectBar reusable component
- i18n keys for all new features (en + ar)

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

client/src/utils/api.js

@@ -139,16 +139,21 @@ export const STATUS_CONFIG = {
   completed: { label: 'Completed', bg: 'bg-blue-50', text: 'text-blue-700', dot: 'bg-blue-400' },
   cancelled: { label: 'Cancelled', bg: 'bg-red-50', text: 'text-red-700', dot: 'bg-red-400' },
   planning: { label: 'Planning', bg: 'bg-gray-100', text: 'text-gray-600', dot: 'bg-gray-400' },
+  // Issue-specific statuses
+  new: { label: 'New', bg: 'bg-purple-100', text: 'text-purple-700', dot: 'bg-purple-500' },
+  acknowledged: { label: 'Acknowledged', bg: 'bg-blue-100', text: 'text-blue-700', dot: 'bg-blue-500' },
+  resolved: { label: 'Resolved', bg: 'bg-emerald-100', text: 'text-emerald-700', dot: 'bg-emerald-500' },
+  declined: { label: 'Declined', bg: 'bg-surface-tertiary', text: 'text-text-secondary', dot: 'bg-text-tertiary' },
 };
 
 export const getStatusConfig = (status) => STATUS_CONFIG[status] || STATUS_CONFIG['draft'];
 
 // Priority config
 export const PRIORITY_CONFIG = {
-  low: { label: 'Low', color: 'bg-gray-400' },
-  medium: { label: 'Medium', color: 'bg-amber-400' },
-  high: { label: 'High', color: 'bg-orange-500' },
-  urgent: { label: 'Urgent', color: 'bg-red-500' },
+  low: { label: 'Low', color: 'bg-gray-400', bg: 'bg-surface-tertiary', text: 'text-text-secondary', dot: 'bg-text-tertiary' },
+  medium: { label: 'Medium', color: 'bg-amber-400', bg: 'bg-blue-100', text: 'text-blue-700', dot: 'bg-blue-500' },
+  high: { label: 'High', color: 'bg-orange-500', bg: 'bg-orange-100', text: 'text-orange-700', dot: 'bg-orange-500' },
+  urgent: { label: 'Urgent', color: 'bg-red-500', bg: 'bg-red-100', text: 'text-red-700', dot: 'bg-red-500' },
 };
 
 // Shared helper: extract initials from a name string