Feat(asset-maintenance): implement asset maintenance scheduling, completion, and history

[Cedarich]

Summary

This PR introduces a dedicated asset-maintenance module to schedule and track maintenance activities for assets.
It provides REST endpoints for:

• Scheduling maintenance tasks
• Marking maintenance as completed
• Fetching historical maintenance records

Note: Scheduling is blocked for disposed assets to maintain consistency with the asset disposals feature.

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Key Changes

New Entity and Table

• Table: asset_maintenance
• Columns:
  • id, assetId, scheduledDate, completedDate, maintenanceType, notes, createdAt, updatedAt
• Index: (assetId + scheduledDate)
• File: asset-maintenance.entity.ts
  • AssetMaintenance entity

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Module, Service, and Controller

• Module: asset-maintenance.module.ts → AssetMaintenanceModule
• Service: asset-maintenance.service.ts → AssetMaintenanceService
• Controller: asset-maintenance.controller.ts → AssetMaintenanceController

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DTOs

• schedule-maintenance.dto.ts → ScheduleMaintenanceDto
• complete-maintenance.dto.ts → CompleteMaintenanceDto

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App Integration

• Updated: app.module.ts → Registered AssetMaintenanceModule

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API Endpoints

1. Schedule Maintenance

POST /asset-maintenance/schedule

Body:

{
  "assetId": "uuid-string",
  "scheduledDate": "2025-10-05T00:00:00.000Z",
  "maintenanceType": "REPAIR",
  "notes": "Optional notes about maintenance"
}

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