Enhance overview and train scheduling features

- Updated OverviewContractsTabPanel to include a new donut chart for freight type distribution.
- Modified OverviewOperationsTabPanel to improve data visualization with additional charts and refactored data handling.
- Introduced CreateScheduleWindowFields component for configuring booking windows in train scheduling.
- Added new API endpoints for allocation candidates and booking allocation in trainScheduling.service.
- Enhanced BookingRequestsPage to support allocation of paid bookings with a modal for selecting alternative dates.
- Updated QUERY_KEYS and URLS constants to accommodate new operations and features.
- Improved type definitions for overview and train scheduling to support new functionalities.

apps/edr-freight-api/src/modules/train-scheduling/train-scheduling.controller.ts

@@ -842,6 +842,32 @@ export class TrainSchedulingController {
     return { ok: true };
   }
 
+  @Get("bookings/:bookingId/allocation-candidates")
+  @TrainSchedulingView()
+  @ApiOperation({
+    summary:
+      "Trains a paid-unallocated booking fits, split same-day vs other days",
+  })
+  getAllocationCandidates(
+    @Param("bookingId", ParseUUIDPipe) bookingId: string,
+  ) {
+    return this.bookingBatchService.allocationCandidates(bookingId);
+  }
+
+  @Post("bookings/:bookingId/allocate")
+  @TrainSchedulingUpdate()
+  @ApiOperation({
+    summary:
+      "Staff: place a paid booking onto a fitting train (notifies customer on date change)",
+  })
+  async allocatePaidBooking(
+    @Param("bookingId", ParseUUIDPipe) bookingId: string,
+    @Body("trainScheduleId", ParseUUIDPipe) trainScheduleId: string,
+  ) {
+    await this.bookingBatchService.allocatePaid(bookingId, trainScheduleId);
+    return { ok: true };
+  }
+
   @Get("schedules/:id/checkpoints")
   @TrainSchedulingView()
   @ApiOperation({