implement contract cancellation feature and update contract statuses

- Added functionality to cancel contracts, allowing users to provide a reason for cancellation.
- Updated contract statuses to include SUSPENDED and changed CLOSED to COMPLETED.
- Enhanced the UI to reflect the new cancellation option and updated messaging for contract statuses.
- Refactored contract booking actions to accommodate changes in booking logic for ONE_TIME and GENERAL contracts.
- Removed clearance document management from the contract detail page, as it is now handled per booking.
- Introduced a SQL script to reset bookings and train schedules for development purposes.

apps/edr-freight-api/src/seed/freight-permissions.registry.ts

@@ -103,6 +103,9 @@ export const CONTRACT_PERMISSIONS: FreightPermissionSeed[] = [
   // Each has its own permission so the two desks are genuinely separate people.
   perm('a3000001-0001-4000-8000-000000000019', 'edr_freight_app:contracts:hazardous_approval_one', 'Hazardous approval — first review'),
   perm('a3000001-0001-4000-8000-00000000001a', 'edr_freight_app:contracts:hazardous_approval_two', 'Hazardous approval — second review'),
+  // Freeze/unfreeze a signed contract. One key covers both directions — whoever
+  // may suspend must be able to lift it again.
+  perm('a3000001-0001-4000-8000-00000000001b', 'edr_freight_app:contracts:suspend', 'Suspend / resume a signed contract'),
 ];
 
 // Existing per-slug view ids are kept as-is: position-type grants reference
@@ -447,6 +450,7 @@ export const FREIGHT_PERMS = {
     clearanceEtActions: 'edr_freight_app:contracts:clearance_et_actions',
     clearanceDjActions: 'edr_freight_app:contracts:clearance_dj_actions',
     clearanceDutyAdvise: 'edr_freight_app:contracts:clearance_duty_advise',
+    suspend: 'edr_freight_app:contracts:suspend',
   },
   trainScheduling: {
     view: 'edr_freight_app:train_scheduling:view',
@@ -897,6 +901,7 @@ export const ROLE_PERMISSION_PRESETS = {
     FREIGHT_PERMS.contracts.approveLineStaff,
     FREIGHT_PERMS.contracts.generateContract,
     ...bothFreightTypes(FREIGHT_PERMS.contracts.signStaff),
+    FREIGHT_PERMS.contracts.suspend,
   ],
   orgManager: [...BOOKING_RULE_ENGINE_PERMISSION_KEYS],
 } as const;