add Group 9 delivery scenarios for self-haul and last-mile paths

- Implemented G9·S38 tests for customer self-haul truck assignments, ensuring compliance with container limits and truck assignments.
- Added G9·S39 tests for last-mile delivery, self-haul, and yard pickup, verifying independent paths for multiple bookings on the same train.
- Created seed data for Group 1 and Group 2 scenarios, ensuring proper setup for weight and capacity tests.
- Updated booking interface to deprecate  in favor of  for better clarity in allocations.

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

@@ -9,6 +9,7 @@ import {
 import { useNavigate, useParams, useSearchParams } from "react-router-dom";
 import { useMutation, useQuery } from "@tanstack/react-query";
 import {
+  ActionIcon,
   Alert,
   Box,
   Button,
@@ -665,6 +666,17 @@ export default function GlCreateBookingForm() {
       ),
     );
 
+  // Drop one container row and shrink quantity to match — the inverse of
+  // syncUnits growing the array when quantity goes up.
+  const removeUnit = (lineIdx: number, unitIdx: number) =>
+    setContainerLines((prev) =>
+      prev.map((l, i) => {
+        if (i !== lineIdx) return l;
+        const units = l.units.filter((_, j) => j !== unitIdx);
+        return withDerivedCounts({ ...l, quantity: String(units.length), units });
+      }),
+    );
+
   // Same client-side validation as the customer portal shipment form
   // (new-shipment-form/schema.ts): ISO container numbers unique within the
   // shipment, positive VGM per unit, hazardous/reefer counts bounded by the
@@ -1362,6 +1374,8 @@ export default function GlCreateBookingForm() {
                         }
                         onChange={(e) => {
                           patchLine(lineIdx, { quantity: e.currentTarget.value });
+                        }}
+                        onBlur={(e) => {
                           syncUnits(lineIdx, Number(e.currentTarget.value || 0));
                         }}
                         radius={10}
@@ -1495,6 +1509,14 @@ export default function GlCreateBookingForm() {
                               />
                             </Box>
                           ))}
+                          <ActionIcon
+                            variant="subtle"
+                            color="red"
+                            aria-label={`Remove container ${unitIdx + 1}`}
+                            onClick={() => removeUnit(lineIdx, unitIdx)}
+                          >
+                            <X size={16} />
+                          </ActionIcon>
                         </Group>
                       ))}
                     </Stack>