backend/src/entities/system-config.entity.ts

import {
  Entity,
  Column,
  PrimaryGeneratedColumn,
  CreateDateColumn,
  UpdateDateColumn,
} from 'typeorm';

@Entity('system_configs')
export class SystemConfig {
  @PrimaryGeneratedColumn()
  id: number;

  @Column({ type: 'varchar', length: 100, unique: true })
  key: string;

  @Column({ type: 'simple-json', nullable: true })
  value: any;

  @Column({ type: 'varchar', length: 255, nullable: true })
  description: string;

  @CreateDateColumn({ name: 'created_at' })
  createdAt: Date;

  @UpdateDateColumn({ name: 'updated_at' })
  updatedAt: Date;
}