feat(combat): add combat domain enums, entities, and encounter consumption field

apps/api/src/combat/entities/combat-event.entity.ts

@@ -0,0 +1,62 @@
+import {
+  Column,
+  CreateDateColumn,
+  Entity,
+  Index,
+  JoinColumn,
+  ManyToOne,
+  PrimaryGeneratedColumn,
+} from 'typeorm';
+import { Combatant } from '../combatant.enum';
+import { CombatEventType } from '../combat-event-type.enum';
+import { Combat } from './combat.entity';
+
+@Entity({ name: 'combat_events' })
+@Index('IDX_combat_events_combat_sequence', ['combatId', 'sequence'], { unique: true })
+export class CombatEvent {
+  @PrimaryGeneratedColumn('uuid', { name: 'id' })
+  id!: string;
+
+  @Column({ name: 'combat_id', type: 'uuid' })
+  combatId!: string;
+
+  @Column({ name: 'round', type: 'integer' })
+  round!: number;
+
+  @Column({ name: 'sequence', type: 'integer' })
+  sequence!: number;
+
+  @Column({
+    name: 'type',
+    type: 'enum',
+    enum: CombatEventType,
+    enumName: 'combat_event_type_enum',
+  })
+  type!: CombatEventType;
+
+  @Column({
+    name: 'source',
+    type: 'enum',
+    enum: Combatant,
+    enumName: 'combatant_enum',
+  })
+  source!: Combatant;
+
+  @Column({
+    name: 'target',
+    type: 'enum',
+    enum: Combatant,
+    enumName: 'combatant_enum',
+  })
+  target!: Combatant;
+
+  @Column({ name: 'amount', type: 'integer', nullable: true })
+  amount!: number | null;
+
+  @CreateDateColumn({ name: 'created_at', type: 'timestamptz' })
+  createdAt!: Date;
+
+  @ManyToOne(() => Combat, { onDelete: 'CASCADE' })
+  @JoinColumn({ name: 'combat_id' })
+  combat!: Combat;
+}