feat(api): per-license API key management + roadmap sync

API keys (roadmap: 'API key management per license'):
- migration 023_api_keys; ApiKey entity; ApiKeysModule (@Global, exports
  ApiKeysService) wired into app.module.
- Service: create (corr_<prefix>_<secret>, returns plaintext once, stores
  sha256 hash + prefix), list (no hash), revoke, and validateKey(rawKey) ->
  { license_id } for a future API-key auth guard. Controller license-scoped +
  RBAC (apikeys.view/manage).

Roadmap: moved the shipped multi-game items (multi-instance host runtime,
per-game wipe + event scheduling) into a 'Phase 2 — Multi-game runtime' shipped
group; Dune/Conan/Soulmask Formulae stay in-progress.

Backend tsc + frontend build green. Migration applies on a fresh DB (Saturday host).

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

backend-nest/src/modules/api-keys/api-keys.controller.ts

@@ -0,0 +1,55 @@
+import {
+  Controller,
+  Get,
+  Post,
+  Delete,
+  Body,
+  Param,
+} from '@nestjs/common';
+import { ApiTags, ApiBearerAuth, ApiOperation, ApiResponse } from '@nestjs/swagger';
+import { ApiKeysService } from './api-keys.service';
+import { CreateApiKeyDto } from './dto/create-api-key.dto';
+import { CurrentTenant } from '../../common/decorators/current-tenant.decorator';
+import { RequirePermission } from '../../common/decorators/require-permission.decorator';
+
+@ApiTags('api-keys')
+@ApiBearerAuth()
+@Controller('api-keys')
+export class ApiKeysController {
+  constructor(private readonly apiKeysService: ApiKeysService) {}
+
+  @Post()
+  @RequirePermission('apikeys.manage')
+  @ApiOperation({
+    summary: 'Create an API key',
+    description:
+      'Issues a new API key for this license. The full plaintext key is returned ONCE — store it securely; it cannot be retrieved again.',
+  })
+  @ApiResponse({ status: 201, description: 'Key created — plaintext key returned once.' })
+  async create(
+    @CurrentTenant() licenseId: string,
+    @Body() dto: CreateApiKeyDto,
+  ) {
+    return this.apiKeysService.create(licenseId, dto.name);
+  }
+
+  @Get()
+  @RequirePermission('apikeys.view')
+  @ApiOperation({ summary: 'List API keys', description: 'Returns all keys (active and revoked) for this license. Key hashes are never returned.' })
+  @ApiResponse({ status: 200, description: 'Key list.' })
+  async list(@CurrentTenant() licenseId: string) {
+    return this.apiKeysService.list(licenseId);
+  }
+
+  @Delete(':id')
+  @RequirePermission('apikeys.manage')
+  @ApiOperation({ summary: 'Revoke an API key', description: 'Soft-deletes the key (is_active = false). The row is retained for audit purposes.' })
+  @ApiResponse({ status: 200, description: 'Key revoked.' })
+  @ApiResponse({ status: 404, description: 'Key not found in this license.' })
+  async revoke(
+    @CurrentTenant() licenseId: string,
+    @Param('id') id: string,
+  ) {
+    return this.apiKeysService.revoke(licenseId, id);
+  }
+}

backend-nest/src/modules/api-keys/api-keys.module.ts

@@ -0,0 +1,14 @@
+import { Global, Module } from '@nestjs/common';
+import { TypeOrmModule } from '@nestjs/typeorm';
+import { ApiKey } from '../../entities/api-key.entity';
+import { ApiKeysController } from './api-keys.controller';
+import { ApiKeysService } from './api-keys.service';
+
+@Global()
+@Module({
+  imports: [TypeOrmModule.forFeature([ApiKey])],
+  controllers: [ApiKeysController],
+  providers: [ApiKeysService],
+  exports: [ApiKeysService],
+})
+export class ApiKeysModule {}

backend-nest/src/modules/api-keys/api-keys.service.ts

@@ -0,0 +1,150 @@
+import { Injectable, Logger, NotFoundException } from '@nestjs/common';
+import { InjectRepository } from '@nestjs/typeorm';
+import { Repository } from 'typeorm';
+import * as crypto from 'crypto';
+import { ApiKey } from '../../entities/api-key.entity';
+
+/** Shape returned to the caller on creation — the ONLY time the plaintext key is exposed. */
+export interface CreatedApiKey {
+  /** Full plaintext key — show once, store nowhere. */
+  plaintext_key: string;
+  id: string;
+  name: string;
+  key_prefix: string;
+  is_active: boolean;
+  created_at: Date;
+}
+
+/** Safe list view — no hash, no plaintext. */
+export interface ApiKeyListItem {
+  id: string;
+  name: string;
+  key_prefix: string;
+  last_used_at: Date | null;
+  is_active: boolean;
+  created_at: Date;
+}
+
+@Injectable()
+export class ApiKeysService {
+  private readonly logger = new Logger(ApiKeysService.name);
+
+  constructor(
+    @InjectRepository(ApiKey)
+    private readonly apiKeyRepo: Repository<ApiKey>,
+  ) {}
+
+  /**
+   * Issue a new API key for the given license.
+   *
+   * Key format: `corr_<prefix8>_<secret32>`
+   * where prefix and secret are URL-safe base64url random bytes.
+   *
+   * Returns the full plaintext key ONCE alongside the saved row.
+   * The hash is never returned to the caller.
+   */
+  async create(licenseId: string, name: string): Promise<CreatedApiKey> {
+    const prefixBytes = crypto.randomBytes(6); // 8 base64url chars
+    const secretBytes = crypto.randomBytes(24); // 32 base64url chars
+
+    const prefix = prefixBytes.toString('base64url');
+    const secret = secretBytes.toString('base64url');
+    const plaintextKey = `corr_${prefix}_${secret}`;
+
+    const keyHash = crypto
+      .createHash('sha256')
+      .update(plaintextKey)
+      .digest('hex');
+
+    const entity = this.apiKeyRepo.create({
+      license_id: licenseId,
+      name,
+      key_prefix: prefix,
+      key_hash: keyHash,
+      is_active: true,
+    });
+
+    const saved = await this.apiKeyRepo.save(entity);
+
+    this.logger.log(
+      `API key created: id=${saved.id} prefix=${prefix} license=${licenseId}`,
+    );
+
+    return {
+      plaintext_key: plaintextKey,
+      id: saved.id,
+      name: saved.name,
+      key_prefix: saved.key_prefix,
+      is_active: saved.is_active,
+      created_at: saved.created_at,
+    };
+  }
+
+  /**
+   * List all keys (active and revoked) for a license.
+   * The key_hash is intentionally excluded.
+   */
+  async list(licenseId: string): Promise<ApiKeyListItem[]> {
+    const rows = await this.apiKeyRepo.find({
+      where: { license_id: licenseId },
+      order: { created_at: 'DESC' },
+      select: ['id', 'name', 'key_prefix', 'last_used_at', 'is_active', 'created_at'],
+    });
+
+    return rows.map((r) => ({
+      id: r.id,
+      name: r.name,
+      key_prefix: r.key_prefix,
+      last_used_at: r.last_used_at,
+      is_active: r.is_active,
+      created_at: r.created_at,
+    }));
+  }
+
+  /**
+   * Revoke (soft-delete) a key.
+   * Returns the updated row or throws NotFoundException if the key
+   * doesn't exist within this license.
+   */
+  async revoke(licenseId: string, id: string): Promise<{ id: string; is_active: boolean }> {
+    const key = await this.apiKeyRepo.findOne({
+      where: { id, license_id: licenseId },
+    });
+
+    if (!key) {
+      throw new NotFoundException(`API key ${id} not found`);
+    }
+
+    key.is_active = false;
+    await this.apiKeyRepo.save(key);
+
+    this.logger.log(`API key revoked: id=${id} license=${licenseId}`);
+
+    return { id: key.id, is_active: key.is_active };
+  }
+
+  /**
+   * Validate a raw API key string.
+   * Called by a future ApiKeyAuthGuard — not exposed via HTTP.
+   *
+   * Hashes the raw key, looks up an ACTIVE row, touches last_used_at,
+   * and returns { license_id } on success or null on failure.
+   */
+  async validateKey(rawKey: string): Promise<{ license_id: string } | null> {
+    const keyHash = crypto.createHash('sha256').update(rawKey).digest('hex');
+
+    const key = await this.apiKeyRepo.findOne({
+      where: { key_hash: keyHash, is_active: true },
+      select: ['id', 'license_id'],
+    });
+
+    if (!key) {
+      return null;
+    }
+
+    // Update last_used_at without loading the full row again.
+    await this.apiKeyRepo.update(key.id, { last_used_at: new Date() });
+
+    return { license_id: key.license_id };
+  }
+}

backend-nest/src/modules/api-keys/dto/create-api-key.dto.ts

@@ -0,0 +1,10 @@
+import { IsString, IsNotEmpty, MaxLength } from 'class-validator';
+import { ApiProperty } from '@nestjs/swagger';
+
+export class CreateApiKeyDto {
+  @ApiProperty({ description: 'Human-readable label for this key', maxLength: 100 })
+  @IsString()
+  @IsNotEmpty()
+  @MaxLength(100)
+  name: string;
+}