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-schedules/entities/train-schedule.entity.ts

@@ -161,6 +161,15 @@ export class TrainSchedule extends BaseEntity {
   @Column({ name: 'rule_payment_window_minutes', type: 'int', nullable: true })
   rulePaymentWindowMinutes?: number | null;
 
+  /**
+   * Staff configured this schedule's booking window by hand (at creation or via
+   * the per-schedule override) instead of inheriting the live global rules.
+   * `restampPendingWindows` skips these, so a later global-rules edit cannot
+   * silently overwrite the hand-picked settings.
+   */
+  @Column({ name: 'window_rule_custom', type: 'boolean', default: false })
+  windowRuleCustom!: boolean;
+
   @Column({ name: 'rule_import_window_lead_days', type: 'int', nullable: true })
   ruleImportWindowLeadDays?: number | null;