feat: add Transit Clearance Action Panel for managing delivery and release orders

- Implemented TransitClearanceActionPanel component for transit agents to handle DO/RO uploads and amendments.
- Added file picker for uploading documents with validation for vessel arrival and collection dates.
- Introduced modals for uploading T1 documents and requesting RO amendments.
- Enhanced transit assignments service with new API endpoints for clearance history, GL exchange documents, and incident reports.
- Updated types to include new document upload sources and statuses.
- Created CSS styles for transit bookings table to improve layout and responsiveness.
- Exported new TransitAgentBookingDetailPage for detailed booking views.

apps/edr-freight-web/backoffice/src/components/contracts/GlExchangePanel.tsx

@@ -42,6 +42,9 @@ const SIDES: Record<Freight.GlExchangeDocument["side"], { label: string; color:
   {
     ET: { label: "GL Ethiopia", color: "edr-green" },
     DJ: { label: "GL Djibouti", color: "blue" },
+    // The transit officer assigned to the shipment can post here too — both
+    // desks see it, and it is never attributed to either of them.
+    TRANSIT: { label: "Transit agent", color: "grape" },
   };
 
 function formatBytes(bytes: number): string {
@@ -99,6 +102,7 @@ export function GlExchangePanel({ entityId }: GlExchangePanelProps) {
     () => ({
       et: documents.filter((d) => d.side === "ET").length,
       dj: documents.filter((d) => d.side === "DJ").length,
+      transit: documents.filter((d) => d.side === "TRANSIT").length,
       shared: documents.filter((d) => d.visibleToCustomer).length,
     }),
     [documents],
@@ -141,6 +145,11 @@ export function GlExchangePanel({ entityId }: GlExchangePanelProps) {
             <Badge variant="light" color="blue" radius="sm" tt="none">
               {stats.dj} from GL Djibouti
             </Badge>
+            {stats.transit > 0 ? (
+              <Badge variant="light" color="grape" radius="sm" tt="none">
+                {stats.transit} from the transit agent
+              </Badge>
+            ) : null}
             <Badge variant="light" color="gray" radius="sm" tt="none">
               {stats.shared} visible to customer
             </Badge>