feat: Complete NestJS backend scaffold — 22 modules, 39 entities, WebSocket gateway

Full backend rewrite from Rust/Axum to NestJS/TypeScript.
- 22 feature modules (auth, servers, wipes, maps, plugins, players, console,
  chat, team, notifications, settings, schedules, analytics, alerts, status,
  store, webstore, admin, setup, migration, users, licenses)
- 39 TypeORM entities matching PostgreSQL schema (12 migrations)
- Common infrastructure: JWT/RBAC guards, decorators, exception filter
- NATS service with pub/sub/request-reply
- Socket.IO WebSocket gateway with NATS bridge
- Docker: NestJS Dockerfile + updated docker-compose.yml
- Zero compile errors (npx tsc --noEmit clean)

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

backend-nest/src/entities/player-action.entity.ts

@@ -0,0 +1,42 @@
+import { Entity, PrimaryGeneratedColumn, Column, ManyToOne, JoinColumn, Check } from 'typeorm';
+import { License } from './license.entity';
+import { User } from './user.entity';
+
+@Entity('player_actions')
+@Check(`"action_type" IN ('kick', 'ban', 'unban', 'warn', 'note')`)
+export class PlayerAction {
+  @PrimaryGeneratedColumn('uuid')
+  id: string;
+
+  @Column({ type: 'uuid' })
+  license_id: string;
+
+  @Column({ type: 'varchar', length: 20 })
+  steam_id: string;
+
+  @Column({ type: 'varchar', length: 100 })
+  player_name: string;
+
+  @Column({ type: 'varchar', length: 20 })
+  action_type: string;
+
+  @Column({ type: 'text', nullable: true })
+  reason: string | null;
+
+  @Column({ type: 'integer', nullable: true })
+  duration_minutes: number | null;
+
+  @Column({ type: 'uuid' })
+  performed_by: string;
+
+  @Column({ type: 'timestamptz', default: () => 'NOW()' })
+  created_at: Date;
+
+  @ManyToOne(() => License, { onDelete: 'CASCADE' })
+  @JoinColumn({ name: 'license_id' })
+  license: License;
+
+  @ManyToOne(() => User)
+  @JoinColumn({ name: 'performed_by' })
+  performer: User;
+}