Phase4

2026-06-26 12:32:27 +02:00
parent 9b061c3ee7
commit 4262464cd5
101 changed files with 4024 additions and 74 deletions
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--- a/.turbo/cache/fc1229a0da7d5e9a-meta.json
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--- a/.turbo/cache/fc1229a0da7d5e9a.tar.zst
+++ b/.turbo/cache/fc1229a0da7d5e9a.tar.zst
--- a/README.md
+++ b/README.md
@@ -92,21 +92,21 @@ make build

 ## Aktueller Stand

-**Phase 3** (Konsole, Dateien, Einstellungen) — abgeschlossen.
+**Phase 4** (Welten & Backups) — abgeschlossen.

 Siehe [docs/IMPLEMENTATION_STATUS.md](docs/IMPLEMENTATION_STATUS.md) für Details.

 ### Server-Verwaltung im Panel

-Nach dem Start eines Servers stehen unter `/servers/[id]` folgende Bereiche zur Verfügung:
-
 | Tab | Funktion |
 |-----|----------|
 | Übersicht | Status, Start/Stop/Restart, Verbindungsadresse |
-| Konsole | Live-Logs (WebSocket), Befehle per RCON (nur `RUNNING`) |
-| Dateien | Verzeichnisliste, Dateien lesen/schreiben |
-| Eigenschaften | `server.properties` bearbeiten, optional Neustart |
-| Spieler | Online-Spieler und Whitelist (Lesen) |
+| Konsole | Live-Logs, RCON-Befehle |
+| Dateien | Verzeichnisliste, Dateien bearbeiten |
+| Eigenschaften | `server.properties` |
+| Spieler | Online-Spieler, Whitelist |
+| **Welten** | Welten anzeigen, Upload/Download (Server gestoppt) |
+| **Backups** | Manuell/geplant, Restore, Retention |

 ### Minecraft-Server lokal testen

--- a/apps/api/package.json
+++ b/apps/api/package.json
@@ -19,6 +19,7 @@
    "@hexahost/config": "workspace:*",
    "@hexahost/contracts": "workspace:*",
    "@hexahost/database": "workspace:*",
+    "@hexahost/storage": "workspace:*",
    "@nestjs/common": "^11.0.7",
    "@nestjs/core": "^11.0.7",
    "@nestjs/platform-fastify": "^11.0.7",
--- a/apps/api/src/nodes/nodes.service.ts
+++ b/apps/api/src/nodes/nodes.service.ts
@@ -320,7 +320,14 @@ export class NodesService {
      normalized === 'files.list' ||
      normalized === 'files.read' ||
      normalized === 'files.write' ||
-      normalized === 'command'
+      normalized === 'command' ||
+      normalized === 'backup.prepare' ||
+      normalized === 'backup.release' ||
+      normalized === 'world.validate' ||
+      normalized === 'world.archive' ||
+      normalized === 'world.replace' ||
+      normalized === 'storage.upload' ||
+      normalized === 'storage.download'
    );
  }

--- a/apps/api/src/servers/backups/backups.controller.ts
+++ b/apps/api/src/servers/backups/backups.controller.ts
@@ -0,0 +1,102 @@
+import {
+  Body,
+  Controller,
+  Delete,
+  Get,
+  Param,
+  ParseUUIDPipe,
+  Patch,
+  Post,
+  UseGuards,
+} from '@nestjs/common';
+import { ApiOperation, ApiResponse, ApiTags } from '@nestjs/swagger';
+
+import {
+  createBackupRequestSchema,
+  restoreBackupRequestSchema,
+  updateBackupScheduleSchema,
+} from '@hexahost/contracts';
+
+import { CurrentUser } from '../../auth/decorators/current-user.decorator';
+import { SessionGuard } from '../../auth/guards/session.guard';
+
+import { BackupsService } from './backups.service';
+
+@ApiTags('servers')
+@Controller('servers/:serverId/backups')
+@UseGuards(SessionGuard)
+export class BackupsController {
+  constructor(private readonly backupsService: BackupsService) {}
+
+  @Get()
+  @ApiOperation({ summary: 'List server backups' })
+  list(
+    @CurrentUser() user: { id: string },
+    @Param('serverId', ParseUUIDPipe) serverId: string,
+  ) {
+    return this.backupsService.listBackups(user.id, serverId);
+  }
+
+  @Post()
+  @ApiOperation({ summary: 'Create a manual backup' })
+  create(
+    @CurrentUser() user: { id: string },
+    @Param('serverId', ParseUUIDPipe) serverId: string,
+    @Body() body: unknown,
+  ) {
+    const input = createBackupRequestSchema.parse(body ?? {});
+    return this.backupsService.createBackup(user.id, serverId, input);
+  }
+
+  @Get('schedule')
+  @ApiOperation({ summary: 'Get backup schedule' })
+  getSchedule(
+    @CurrentUser() user: { id: string },
+    @Param('serverId', ParseUUIDPipe) serverId: string,
+  ) {
+    return this.backupsService.getSchedule(user.id, serverId);
+  }
+
+  @Patch('schedule')
+  @ApiOperation({ summary: 'Update backup schedule' })
+  updateSchedule(
+    @CurrentUser() user: { id: string },
+    @Param('serverId', ParseUUIDPipe) serverId: string,
+    @Body() body: unknown,
+  ) {
+    const input = updateBackupScheduleSchema.parse(body);
+    return this.backupsService.updateSchedule(user.id, serverId, input);
+  }
+
+  @Get(':backupId/download-url')
+  @ApiOperation({ summary: 'Get a presigned download URL for a backup' })
+  downloadUrl(
+    @CurrentUser() user: { id: string },
+    @Param('serverId', ParseUUIDPipe) serverId: string,
+    @Param('backupId', ParseUUIDPipe) backupId: string,
+  ) {
+    return this.backupsService.getDownloadUrl(user.id, serverId, backupId);
+  }
+
+  @Post(':backupId/restore')
+  @ApiOperation({ summary: 'Restore a backup' })
+  restore(
+    @CurrentUser() user: { id: string },
+    @Param('serverId', ParseUUIDPipe) serverId: string,
+    @Param('backupId', ParseUUIDPipe) backupId: string,
+    @Body() body: unknown,
+  ) {
+    restoreBackupRequestSchema.parse(body);
+    return this.backupsService.restoreBackup(user.id, serverId, backupId);
+  }
+
+  @Delete(':backupId')
+  @ApiOperation({ summary: 'Delete a backup' })
+  deleteBackup(
+    @CurrentUser() user: { id: string },
+    @Param('serverId', ParseUUIDPipe) serverId: string,
+    @Param('backupId', ParseUUIDPipe) backupId: string,
+  ) {
+    return this.backupsService.deleteBackup(user.id, serverId, backupId);
+  }
+}
--- a/apps/api/src/servers/backups/backups.module.ts
+++ b/apps/api/src/servers/backups/backups.module.ts
@@ -0,0 +1,34 @@
+import { Module } from '@nestjs/common';
+import { Queue } from 'bullmq';
+
+import { getConfig } from '@hexahost/config';
+
+import { AuthModule } from '../../auth/auth.module';
+import { PrismaModule } from '../../prisma/prisma.module';
+
+import { BackupsController } from './backups.controller';
+import { BackupsService, SERVER_BACKUPS_QUEUE } from './backups.service';
+import { ServerStateService } from '../server-state.service';
+
+@Module({
+  imports: [AuthModule, PrismaModule],
+  controllers: [BackupsController],
+  providers: [
+    BackupsService,
+    ServerStateService,
+    {
+      provide: SERVER_BACKUPS_QUEUE,
+      useFactory: () => {
+        const config = getConfig();
+        return new Queue('server-backups', {
+          connection: {
+            url: config.REDIS_URL,
+            maxRetriesPerRequest: null,
+          },
+        });
+      },
+    },
+  ],
+  exports: [BackupsService, SERVER_BACKUPS_QUEUE],
+})
+export class BackupsModule {}
--- a/apps/api/src/servers/backups/backups.service.ts
+++ b/apps/api/src/servers/backups/backups.service.ts
@@ -0,0 +1,341 @@
+import {
+  BadRequestException,
+  Inject,
+  Injectable,
+} from '@nestjs/common';
+import { Queue } from 'bullmq';
+
+import type { ServerBackup } from '@hexahost/database';
+import type {
+  BackupActionResponse,
+  BackupDownloadUrlResponse,
+  BackupListResponse,
+  BackupResponse,
+  BackupRestoreResponse,
+  BackupSchedule,
+  CreateBackupRequest,
+  UpdateBackupSchedule,
+} from '@hexahost/contracts';
+import {
+  createPresignedGetUrl,
+  createS3Client,
+  deleteStoredObject,
+  loadStorageConfig,
+} from '@hexahost/storage';
+
+import { AuditService } from '../../auth/audit.service';
+import { PrismaService } from '../../prisma/prisma.service';
+import { findOwnedServer } from '../shared/server-ownership.util';
+import { ServerStateService } from '../server-state.service';
+
+export const SERVER_BACKUPS_QUEUE = Symbol('SERVER_BACKUPS_QUEUE');
+
+@Injectable()
+export class BackupsService {
+  constructor(
+    private readonly prisma: PrismaService,
+    private readonly serverState: ServerStateService,
+    private readonly auditService: AuditService,
+    @Inject(SERVER_BACKUPS_QUEUE) private readonly backupsQueue: Queue,
+  ) {}
+
+  async listBackups(userId: string, serverId: string): Promise<BackupListResponse> {
+    await findOwnedServer(this.prisma, userId, serverId);
+
+    const backups = await this.prisma.serverBackup.findMany({
+      where: {
+        serverId,
+        status: { not: 'DELETED' },
+      },
+      orderBy: { createdAt: 'desc' },
+    });
+
+    return { backups: backups.map((backup) => this.toResponse(backup)) };
+  }
+
+  async createBackup(
+    userId: string,
+    serverId: string,
+    input: CreateBackupRequest,
+  ): Promise<BackupActionResponse> {
+    const server = await findOwnedServer(this.prisma, userId, serverId);
+    this.serverState.assertNotInProgress(server.status);
+
+    if (!server.nodeId) {
+      throw new BadRequestException('Server is not assigned to a node');
+    }
+
+    if (server.status !== 'RUNNING' && server.status !== 'STOPPED') {
+      throw new BadRequestException(
+        `Cannot create backup while server is ${server.status}`,
+      );
+    }
+
+    const previousStatus = server.status;
+    const backup = await this.prisma.serverBackup.create({
+      data: {
+        serverId,
+        type: 'MANUAL',
+        status: 'PENDING',
+        label: input.label ?? 'Manual backup',
+      },
+    });
+
+    await this.prisma.gameServer.update({
+      where: { id: serverId },
+      data: { status: 'BACKING_UP' },
+    });
+
+    await this.prisma.gameServerStateTransition.create({
+      data: {
+        gameServerId: serverId,
+        fromStatus: previousStatus,
+        toStatus: 'BACKING_UP',
+        reason: 'Manual backup requested',
+        actorId: userId,
+      },
+    });
+
+    const job = await this.backupsQueue.add('create-backup', {
+      backupId: backup.id,
+      serverId,
+      previousStatus,
+    });
+
+    await this.auditService.record({
+      action: 'server.backup.create',
+      userId,
+      entityType: 'game_server',
+      entityId: serverId,
+      metadata: { backupId: backup.id },
+    });
+
+    return {
+      backup: this.toResponse(backup),
+      jobId: job.id?.toString(),
+    };
+  }
+
+  async getDownloadUrl(
+    userId: string,
+    serverId: string,
+    backupId: string,
+  ): Promise<BackupDownloadUrlResponse> {
+    await findOwnedServer(this.prisma, userId, serverId);
+
+    const backup = await this.prisma.serverBackup.findFirstOrThrow({
+      where: { id: backupId, serverId, status: 'AVAILABLE' },
+    });
+
+    if (!backup.s3Key) {
+      throw new BadRequestException('Backup is not stored yet');
+    }
+
+    const config = loadStorageConfig();
+    const client = createS3Client(config);
+    const expiresAt = new Date(Date.now() + 15 * 60 * 1000);
+    const downloadUrl = await createPresignedGetUrl(
+      client,
+      config.S3_BUCKET,
+      backup.s3Key,
+      15 * 60,
+    );
+
+    return {
+      downloadUrl,
+      expiresAt: expiresAt.toISOString(),
+    };
+  }
+
+  async deleteBackup(
+    userId: string,
+    serverId: string,
+    backupId: string,
+  ): Promise<BackupResponse> {
+    await findOwnedServer(this.prisma, userId, serverId);
+
+    const backup = await this.prisma.serverBackup.findFirstOrThrow({
+      where: { id: backupId, serverId },
+    });
+
+    if (backup.s3Key) {
+      const config = loadStorageConfig();
+      const client = createS3Client(config);
+      await deleteStoredObject(client, config.S3_BUCKET, backup.s3Key);
+    }
+
+    const updated = await this.prisma.serverBackup.update({
+      where: { id: backupId },
+      data: { status: 'DELETED' },
+    });
+
+    await this.auditService.record({
+      action: 'server.backup.delete',
+      userId,
+      entityType: 'game_server',
+      entityId: serverId,
+      metadata: { backupId },
+    });
+
+    return this.toResponse(updated);
+  }
+
+  async restoreBackup(
+    userId: string,
+    serverId: string,
+    backupId: string,
+  ): Promise<BackupRestoreResponse> {
+    const server = await findOwnedServer(this.prisma, userId, serverId);
+    this.serverState.assertNotInProgress(server.status);
+
+    if (!server.nodeId) {
+      throw new BadRequestException('Server is not assigned to a node');
+    }
+
+    if (server.status === 'RUNNING') {
+      throw new BadRequestException('Server must be stopped before restore');
+    }
+
+    if (server.status !== 'STOPPED') {
+      throw new BadRequestException(
+        `Cannot restore while server is ${server.status}`,
+      );
+    }
+
+    const backup = await this.prisma.serverBackup.findFirstOrThrow({
+      where: { id: backupId, serverId, status: 'AVAILABLE' },
+    });
+
+    const restore = await this.prisma.backupRestore.create({
+      data: {
+        serverId,
+        backupId: backup.id,
+        status: 'PENDING',
+      },
+    });
+
+    await this.prisma.gameServer.update({
+      where: { id: serverId },
+      data: { status: 'RESTORING' },
+    });
+
+    await this.prisma.gameServerStateTransition.create({
+      data: {
+        gameServerId: serverId,
+        fromStatus: 'STOPPED',
+        toStatus: 'RESTORING',
+        reason: 'Restore requested',
+        actorId: userId,
+      },
+    });
+
+    const job = await this.backupsQueue.add('restore-backup', {
+      restoreId: restore.id,
+      serverId,
+      backupId: backup.id,
+    });
+
+    await this.auditService.record({
+      action: 'server.backup.restore',
+      userId,
+      entityType: 'game_server',
+      entityId: serverId,
+      metadata: { backupId, restoreId: restore.id },
+    });
+
+    return {
+      restore: {
+        id: restore.id,
+        serverId,
+        backupId: backup.id,
+        safetyBackupId: restore.safetyBackupId,
+        status: restore.status,
+        failureReason: restore.failureReason,
+        createdAt: restore.createdAt.toISOString(),
+        completedAt: restore.completedAt?.toISOString() ?? null,
+      },
+      jobId: job.id?.toString(),
+    };
+  }
+
+  async getSchedule(userId: string, serverId: string): Promise<BackupSchedule> {
+    await findOwnedServer(this.prisma, userId, serverId);
+
+    const schedule = await this.prisma.backupSchedule.upsert({
+      where: { serverId },
+      create: {
+        serverId,
+        enabled: false,
+        intervalHours: 24,
+        retentionCount: 5,
+        nextRunAt: new Date(Date.now() + 24 * 60 * 60 * 1000),
+      },
+      update: {},
+    });
+
+    return this.toScheduleResponse(schedule);
+  }
+
+  async updateSchedule(
+    userId: string,
+    serverId: string,
+    input: UpdateBackupSchedule,
+  ): Promise<BackupSchedule> {
+    await findOwnedServer(this.prisma, userId, serverId);
+
+    const schedule = await this.prisma.backupSchedule.upsert({
+      where: { serverId },
+      create: {
+        serverId,
+        enabled: input.enabled ?? false,
+        intervalHours: input.intervalHours ?? 24,
+        retentionCount: input.retentionCount ?? 5,
+        nextRunAt: new Date(Date.now() + (input.intervalHours ?? 24) * 60 * 60 * 1000),
+      },
+      update: {
+        enabled: input.enabled,
+        intervalHours: input.intervalHours,
+        retentionCount: input.retentionCount,
+        nextRunAt:
+          input.enabled === true
+            ? new Date(Date.now() + (input.intervalHours ?? 24) * 60 * 60 * 1000)
+            : undefined,
+      },
+    });
+
+    return this.toScheduleResponse(schedule);
+  }
+
+  private toResponse(backup: ServerBackup): BackupResponse {
+    return {
+      id: backup.id,
+      serverId: backup.serverId,
+      type: backup.type,
+      status: backup.status,
+      s3Key: backup.s3Key,
+      sizeBytes: backup.sizeBytes?.toString() ?? null,
+      sha256: backup.sha256,
+      label: backup.label,
+      failureReason: backup.failureReason,
+      createdAt: backup.createdAt.toISOString(),
+      completedAt: backup.completedAt?.toISOString() ?? null,
+      expiresAt: backup.expiresAt?.toISOString() ?? null,
+    };
+  }
+
+  private toScheduleResponse(schedule: {
+    enabled: boolean;
+    intervalHours: number;
+    retentionCount: number;
+    nextRunAt: Date | null;
+    lastRunAt: Date | null;
+  }): BackupSchedule {
+    return {
+      enabled: schedule.enabled,
+      intervalHours: schedule.intervalHours,
+      retentionCount: schedule.retentionCount,
+      nextRunAt: schedule.nextRunAt?.toISOString() ?? null,
+      lastRunAt: schedule.lastRunAt?.toISOString() ?? null,
+    };
+  }
+}
--- a/apps/api/src/servers/server-state.service.ts
+++ b/apps/api/src/servers/server-state.service.ts
@@ -7,10 +7,12 @@ const ALLOWED_TRANSITIONS: Record<GameServerStatus, GameServerStatus[]> = {
  DRAFT: ['PROVISIONING', 'DELETING'],
  PROVISIONING: ['INSTALLING', 'ERROR', 'DELETING'],
  INSTALLING: ['STOPPED', 'ERROR', 'DELETING'],
-  STOPPED: ['STARTING', 'PROVISIONING', 'DELETING'],
+  STOPPED: ['STARTING', 'PROVISIONING', 'BACKING_UP', 'RESTORING', 'DELETING'],
  STARTING: ['RUNNING', 'STOPPED', 'ERROR', 'DELETING'],
-  RUNNING: ['STOPPING', 'ERROR', 'DELETING'],
+  RUNNING: ['STOPPING', 'BACKING_UP', 'ERROR', 'DELETING'],
  STOPPING: ['STOPPED', 'ERROR', 'DELETING'],
+  BACKING_UP: ['RUNNING', 'STOPPED', 'ERROR'],
+  RESTORING: ['STOPPED', 'ERROR'],
  ERROR: ['STOPPED', 'STARTING', 'PROVISIONING', 'DELETING'],
  DELETING: ['DELETED'],
  DELETED: [],
@@ -21,6 +23,8 @@ const IN_PROGRESS_STATUSES: GameServerStatus[] = [
  'INSTALLING',
  'STARTING',
  'STOPPING',
+  'BACKING_UP',
+  'RESTORING',
  'DELETING',
 ];

--- a/apps/api/src/servers/servers.module.ts
+++ b/apps/api/src/servers/servers.module.ts
@@ -9,7 +9,9 @@ import { NodeBridgeModule } from '../nodes/node-bridge.module';
 import { AppConfigModule } from '../config/app-config.module';

 import { ConsoleModule } from './console/console.module';
+import { BackupsModule } from './backups/backups.module';
 import { FilesModule } from './files/files.module';
+import { WorldsModule } from './worlds/worlds.module';
 import { PlayersModule } from './players/players.module';
 import { PropertiesModule } from './properties/properties.module';
 import { ServerStateService } from './server-state.service';
@@ -28,6 +30,8 @@ import { PlansService } from './plans.service';
    AppConfigModule,
    AuthModule,
    forwardRef(() => ConsoleModule),
+    forwardRef(() => BackupsModule),
+    forwardRef(() => WorldsModule),
    forwardRef(() => FilesModule),
    forwardRef(() => PropertiesModule),
    forwardRef(() => PlayersModule),
--- a/apps/api/src/servers/servers.service.ts
+++ b/apps/api/src/servers/servers.service.ts
@@ -314,6 +314,7 @@ export class ServersService {
      hostPort: server.hostPort,
      containerId: server.containerId,
      dataPath: server.dataPath,
+      activeWorldName: server.activeWorldName,
      ramMb: server.ramMb,
      createdAt: server.createdAt.toISOString(),
      updatedAt: server.updatedAt.toISOString(),
--- a/apps/api/src/servers/worlds/worlds.controller.ts
+++ b/apps/api/src/servers/worlds/worlds.controller.ts
@@ -0,0 +1,63 @@
+import {
+  Body,
+  Controller,
+  Get,
+  Param,
+  ParseUUIDPipe,
+  Post,
+  UseGuards,
+} from '@nestjs/common';
+import { ApiOperation, ApiTags } from '@nestjs/swagger';
+
+import { initiateWorldUploadSchema } from '@hexahost/contracts';
+
+import { CurrentUser } from '../../auth/decorators/current-user.decorator';
+import { SessionGuard } from '../../auth/guards/session.guard';
+
+import { WorldsService } from './worlds.service';
+
+@ApiTags('servers')
+@Controller('servers/:serverId/worlds')
+@UseGuards(SessionGuard)
+export class WorldsController {
+  constructor(private readonly worldsService: WorldsService) {}
+
+  @Get()
+  @ApiOperation({ summary: 'Get world overview' })
+  info(
+    @CurrentUser() user: { id: string },
+    @Param('serverId', ParseUUIDPipe) serverId: string,
+  ) {
+    return this.worldsService.getWorldInfo(user.id, serverId);
+  }
+
+  @Post('uploads')
+  @ApiOperation({ summary: 'Initiate a world upload' })
+  initiateUpload(
+    @CurrentUser() user: { id: string },
+    @Param('serverId', ParseUUIDPipe) serverId: string,
+    @Body() body: unknown,
+  ) {
+    const input = initiateWorldUploadSchema.parse(body);
+    return this.worldsService.initiateUpload(user.id, serverId, input);
+  }
+
+  @Post('uploads/:uploadId/complete')
+  @ApiOperation({ summary: 'Complete a world upload and apply it' })
+  completeUpload(
+    @CurrentUser() user: { id: string },
+    @Param('serverId', ParseUUIDPipe) serverId: string,
+    @Param('uploadId', ParseUUIDPipe) uploadId: string,
+  ) {
+    return this.worldsService.completeUpload(user.id, serverId, uploadId);
+  }
+
+  @Post('download')
+  @ApiOperation({ summary: 'Create a backup for world download' })
+  download(
+    @CurrentUser() user: { id: string },
+    @Param('serverId', ParseUUIDPipe) serverId: string,
+  ) {
+    return this.worldsService.requestWorldDownload(user.id, serverId);
+  }
+}
--- a/apps/api/src/servers/worlds/worlds.module.ts
+++ b/apps/api/src/servers/worlds/worlds.module.ts
@@ -0,0 +1,17 @@
+import { Module } from '@nestjs/common';
+
+import { AuthModule } from '../../auth/auth.module';
+import { NodeBridgeModule } from '../../nodes/node-bridge.module';
+import { PrismaModule } from '../../prisma/prisma.module';
+import { BackupsModule } from '../backups/backups.module';
+import { ServerStateService } from '../server-state.service';
+
+import { WorldsController } from './worlds.controller';
+import { WorldsService } from './worlds.service';
+
+@Module({
+  imports: [AuthModule, PrismaModule, NodeBridgeModule, BackupsModule],
+  controllers: [WorldsController],
+  providers: [WorldsService, ServerStateService],
+})
+export class WorldsModule {}
--- a/apps/api/src/servers/worlds/worlds.service.ts
+++ b/apps/api/src/servers/worlds/worlds.service.ts
@@ -0,0 +1,250 @@
+import {
+  BadRequestException,
+  Inject,
+  Injectable,
+  ServiceUnavailableException,
+} from '@nestjs/common';
+import { Queue } from 'bullmq';
+import { randomUUID } from 'node:crypto';
+
+import type {
+  InitiateWorldUpload,
+  WorldDownloadUrlResponse,
+  WorldInfoResponse,
+  WorldUploadInitResponse,
+  WorldUploadResponse,
+} from '@hexahost/contracts';
+import type { GameServer, WorldUpload } from '@hexahost/database';
+import {
+  createPresignedPutUrl,
+  createS3Client,
+  headStoredObject,
+  loadStorageConfig,
+  worldUploadObjectKey,
+} from '@hexahost/storage';
+
+import { AuditService } from '../../auth/audit.service';
+import { NodeBridgeService } from '../../nodes/node-bridge.service';
+import { PrismaService } from '../../prisma/prisma.service';
+import { findOwnedServer } from '../shared/server-ownership.util';
+import { ServerStateService } from '../server-state.service';
+import { SERVER_BACKUPS_QUEUE } from '../backups/backups.service';
+
+const WORLD_MANAGE_STATUSES = new Set<GameServer['status']>(['STOPPED']);
+
+@Injectable()
+export class WorldsService {
+  constructor(
+    private readonly prisma: PrismaService,
+    private readonly nodeBridge: NodeBridgeService,
+    private readonly serverState: ServerStateService,
+    private readonly auditService: AuditService,
+    @Inject(SERVER_BACKUPS_QUEUE) private readonly backupsQueue: Queue,
+  ) {}
+
+  async getWorldInfo(userId: string, serverId: string): Promise<WorldInfoResponse> {
+    const server = await this.requireNode(serverId, userId);
+
+    const response = await this.nodeBridge.sendAgentRequest(
+      server.nodeId!,
+      'server.world.validate',
+      {
+        serverId,
+        generation: server.version,
+        worldName: server.activeWorldName,
+      },
+    );
+
+    if (!response.success) {
+      throw new ServiceUnavailableException(
+        response.errorMessage ?? 'Failed to load world info',
+      );
+    }
+
+    const result = response.result as {
+      worlds?: Array<{
+        name: string;
+        path: string;
+        sizeBytes: number;
+        hasLevelDat: boolean;
+      }>;
+    };
+
+    return {
+      activeWorldName: server.activeWorldName,
+      worlds: (result.worlds ?? []).map((world) => ({
+        name: world.name,
+        path: world.path,
+        sizeBytes: String(world.sizeBytes),
+        hasLevelDat: world.hasLevelDat,
+      })),
+    };
+  }
+
+  async initiateUpload(
+    userId: string,
+    serverId: string,
+    input: InitiateWorldUpload,
+  ): Promise<WorldUploadInitResponse> {
+    const server = await this.requireStoppedServer(userId, serverId);
+    const uploadId = randomUUID();
+    const config = loadStorageConfig();
+    const client = createS3Client(config);
+    const s3Key = worldUploadObjectKey(serverId, uploadId);
+    const expiresAt = new Date(Date.now() + 60 * 60 * 1000);
+    const uploadUrl = await createPresignedPutUrl(
+      client,
+      config.S3_BUCKET,
+      s3Key,
+      60 * 60,
+      'application/gzip',
+    );
+
+    await this.prisma.worldUpload.create({
+      data: {
+        id: uploadId,
+        serverId,
+        status: 'UPLOADING',
+        s3Key,
+        worldName: input.worldName,
+      },
+    });
+
+    return {
+      uploadId,
+      uploadUrl,
+      expiresAt: expiresAt.toISOString(),
+      s3Key,
+    };
+  }
+
+  async completeUpload(
+    userId: string,
+    serverId: string,
+    uploadId: string,
+  ): Promise<WorldUploadResponse> {
+    const server = await this.requireStoppedServer(userId, serverId);
+    const upload = await this.prisma.worldUpload.findFirstOrThrow({
+      where: { id: uploadId, serverId },
+    });
+
+    const config = loadStorageConfig();
+    const client = createS3Client(config);
+    const head = await headStoredObject(client, config.S3_BUCKET, upload.s3Key);
+
+    if (head.sizeBytes <= 0) {
+      throw new BadRequestException('Uploaded world archive is empty');
+    }
+
+    const updated = await this.prisma.worldUpload.update({
+      where: { id: uploadId },
+      data: {
+        status: 'READY',
+        sizeBytes: BigInt(head.sizeBytes),
+      },
+    });
+
+    await this.backupsQueue.add('apply-world-upload', {
+      uploadId,
+      serverId,
+    });
+
+    await this.auditService.record({
+      action: 'server.world.upload',
+      userId,
+      entityType: 'game_server',
+      entityId: serverId,
+      metadata: { uploadId, worldName: upload.worldName },
+    });
+
+    return this.toUploadResponse(updated);
+  }
+
+  async requestWorldDownload(
+    userId: string,
+    serverId: string,
+  ): Promise<WorldDownloadUrlResponse> {
+    const server = await this.requireNode(serverId, userId);
+
+    if (server.status !== 'RUNNING' && server.status !== 'STOPPED') {
+      throw new BadRequestException(
+        `Cannot download world while server is ${server.status}`,
+      );
+    }
+
+    const backup = await this.prisma.serverBackup.create({
+      data: {
+        serverId,
+        type: 'MANUAL',
+        status: 'PENDING',
+        label: 'World download',
+      },
+    });
+
+    const previousStatus = server.status as 'RUNNING' | 'STOPPED';
+
+    await this.prisma.gameServer.update({
+      where: { id: serverId },
+      data: { status: 'BACKING_UP' },
+    });
+
+    await this.prisma.gameServerStateTransition.create({
+      data: {
+        gameServerId: serverId,
+        fromStatus: server.status,
+        toStatus: 'BACKING_UP',
+        reason: 'World download backup started',
+        actorId: userId,
+      },
+    });
+
+    await this.backupsQueue.add('create-backup', {
+      backupId: backup.id,
+      serverId,
+      previousStatus,
+    });
+
+    return {
+      backupId: backup.id,
+      downloadUrl: '',
+      expiresAt: new Date(Date.now() + 15 * 60 * 1000).toISOString(),
+    };
+  }
+
+  private async requireNode(serverId: string, userId: string): Promise<GameServer> {
+    const server = await findOwnedServer(this.prisma, userId, serverId);
+    if (!server.nodeId) {
+      throw new BadRequestException('Server is not assigned to a node');
+    }
+    return server;
+  }
+
+  private async requireStoppedServer(
+    userId: string,
+    serverId: string,
+  ): Promise<GameServer> {
+    const server = await this.requireNode(serverId, userId);
+    this.serverState.assertNotInProgress(server.status);
+
+    if (!WORLD_MANAGE_STATUSES.has(server.status)) {
+      throw new BadRequestException(
+        `World changes require server to be STOPPED (current: ${server.status})`,
+      );
+    }
+
+    return server;
+  }
+
+  private toUploadResponse(upload: WorldUpload): WorldUploadResponse {
+    return {
+      id: upload.id,
+      serverId: upload.serverId,
+      status: upload.status,
+      worldName: upload.worldName,
+      sizeBytes: upload.sizeBytes?.toString() ?? null,
+      failureReason: upload.failureReason,
+      createdAt: upload.createdAt.toISOString(),
+      completedAt: upload.completedAt?.toISOString() ?? null,
+    };
+  }
+}
--- a/apps/api/tsconfig.build.tsbuildinfo
+++ b/apps/api/tsconfig.build.tsbuildinfo
--- a/apps/api/tsconfig.tsbuildinfo
+++ b/apps/api/tsconfig.tsbuildinfo
--- a/apps/node-agent/internal/archive/archive.go
+++ b/apps/node-agent/internal/archive/archive.go
@@ -0,0 +1,159 @@
+package archive
+
+import (
+	"archive/tar"
+	"compress/gzip"
+	"crypto/sha256"
+	"encoding/hex"
+	"fmt"
+	"io"
+	"os"
+	"path/filepath"
+	"strings"
+)
+
+// CreateTarGz archives sourceDir into outputPath and returns checksum and size.
+func CreateTarGz(sourceDir, outputPath string) (sha256sum string, size int64, err error) {
+	sourceDir = filepath.Clean(sourceDir)
+
+	info, err := os.Stat(sourceDir)
+	if err != nil {
+		return "", 0, err
+	}
+	if !info.IsDir() {
+		return "", 0, fmt.Errorf("source is not a directory")
+	}
+
+	if err := os.MkdirAll(filepath.Dir(outputPath), 0o755); err != nil {
+		return "", 0, err
+	}
+
+	file, err := os.Create(outputPath)
+	if err != nil {
+		return "", 0, err
+	}
+	defer file.Close()
+
+	hasher := sha256.New()
+	writer := io.MultiWriter(file, hasher)
+	gzipWriter := gzip.NewWriter(writer)
+	tarWriter := tar.NewWriter(gzipWriter)
+
+	err = filepath.Walk(sourceDir, func(path string, entry os.FileInfo, walkErr error) error {
+		if walkErr != nil {
+			return walkErr
+		}
+
+		rel, err := filepath.Rel(sourceDir, path)
+		if err != nil {
+			return err
+		}
+		if rel == "." {
+			return nil
+		}
+
+		rel = filepath.ToSlash(rel)
+		header, err := tar.FileInfoHeader(entry, "")
+		if err != nil {
+			return err
+		}
+		header.Name = rel
+
+		if err := tarWriter.WriteHeader(header); err != nil {
+			return err
+		}
+
+		if entry.IsDir() {
+			return nil
+		}
+
+		sourceFile, err := os.Open(path)
+		if err != nil {
+			return err
+		}
+		defer sourceFile.Close()
+
+		_, err = io.Copy(tarWriter, sourceFile)
+		return err
+	})
+	if err != nil {
+		return "", 0, err
+	}
+
+	if err := tarWriter.Close(); err != nil {
+		return "", 0, err
+	}
+	if err := gzipWriter.Close(); err != nil {
+		return "", 0, err
+	}
+
+	stat, err := file.Stat()
+	if err != nil {
+		return "", 0, err
+	}
+
+	return hex.EncodeToString(hasher.Sum(nil)), stat.Size(), nil
+}
+
+// ExtractTarGz extracts archivePath into destDir.
+func ExtractTarGz(archivePath, destDir string) error {
+	destDir = filepath.Clean(destDir)
+	if err := os.MkdirAll(destDir, 0o755); err != nil {
+		return err
+	}
+
+	file, err := os.Open(archivePath)
+	if err != nil {
+		return err
+	}
+	defer file.Close()
+
+	gzipReader, err := gzip.NewReader(file)
+	if err != nil {
+		return err
+	}
+	defer gzipReader.Close()
+
+	tarReader := tar.NewReader(gzipReader)
+
+	for {
+		header, err := tarReader.Next()
+		if err == io.EOF {
+			break
+		}
+		if err != nil {
+			return err
+		}
+
+		target := filepath.Join(destDir, filepath.FromSlash(header.Name))
+		if !strings.HasPrefix(filepath.Clean(target), destDir+string(os.PathSeparator)) && filepath.Clean(target) != destDir {
+			return fmt.Errorf("archive entry escapes destination: %s", header.Name)
+		}
+
+		switch header.Typeflag {
+		case tar.TypeDir:
+			if err := os.MkdirAll(target, 0o755); err != nil {
+				return err
+			}
+		case tar.TypeReg:
+			if err := os.MkdirAll(filepath.Dir(target), 0o755); err != nil {
+				return err
+			}
+
+			out, err := os.OpenFile(target, os.O_CREATE|os.O_WRONLY|os.O_TRUNC, os.FileMode(header.Mode))
+			if err != nil {
+				return err
+			}
+
+			if _, err := io.Copy(out, tarReader); err != nil {
+				out.Close()
+				return err
+			}
+			out.Close()
+		default:
+			continue
+		}
+	}
+
+	return nil
+}
--- a/apps/node-agent/internal/protocol/messages.go
+++ b/apps/node-agent/internal/protocol/messages.go
@@ -40,6 +40,10 @@ const (
 	TypeServerFilesWrite      MessageType = "server.files.write"
 	TypeServerFilesUploadDone MessageType = "server.files.upload.complete"
 	TypeServerWorldValidate   MessageType = "server.world.validate"
+	TypeServerWorldArchive    MessageType = "server.world.archive"
+	TypeServerWorldReplace    MessageType = "server.world.replace"
+	TypeServerStorageUpload   MessageType = "server.storage.upload"
+	TypeServerStorageDownload MessageType = "server.storage.download"
 	TypeServerMetricsSub      MessageType = "server.metrics.subscribe"
 	TypeServerLogsSubscribe   MessageType = "server.logs.subscribe"
 )
@@ -72,6 +76,10 @@ var controlToAgentTypes = map[MessageType]struct{}{
 	TypeServerFilesWrite:      {},
 	TypeServerFilesUploadDone: {},
 	TypeServerWorldValidate:   {},
+	TypeServerWorldArchive:    {},
+	TypeServerWorldReplace:    {},
+	TypeServerStorageUpload:   {},
+	TypeServerStorageDownload: {},
 	TypeServerMetricsSub:      {},
 	TypeServerLogsSubscribe:   {},
 }
@@ -178,6 +186,40 @@ type ServerFilesWritePayload struct {
 	Create  bool   `json:"create"`
 }

+// ServerWorldValidatePayload validates a Minecraft world directory.
+type ServerWorldValidatePayload struct {
+	OperationMeta
+	WorldName string `json:"worldName"`
+}
+
+// ServerWorldArchivePayload archives a world directory.
+type ServerWorldArchivePayload struct {
+	OperationMeta
+	WorldName string `json:"worldName"`
+	ArchiveID string `json:"archiveId"`
+}
+
+// ServerStorageUploadPayload uploads a local file to a presigned URL.
+type ServerStorageUploadPayload struct {
+	OperationMeta
+	LocalPath string `json:"localPath"`
+	UploadURL string `json:"uploadUrl"`
+}
+
+// ServerStorageDownloadPayload downloads a remote file to a local path.
+type ServerStorageDownloadPayload struct {
+	OperationMeta
+	DownloadURL string `json:"downloadUrl"`
+	LocalPath   string `json:"localPath"`
+}
+
+// ServerWorldReplacePayload replaces a world from a local archive.
+type ServerWorldReplacePayload struct {
+	OperationMeta
+	WorldName   string `json:"worldName"`
+	ArchivePath string `json:"archivePath"`
+}
+
 // FileEntry describes a file or directory in a list response.
 type FileEntry struct {
 	Name       string `json:"name"`
--- a/apps/node-agent/internal/runtime/manager.go
+++ b/apps/node-agent/internal/runtime/manager.go
@@ -5,11 +5,16 @@ import (
 	"encoding/json"
 	"errors"
 	"log/slog"
+	"os"
+	"path/filepath"
 	"sync"

+	"github.com/hexahost/gamecloud/node-agent/internal/archive"
 	"github.com/hexahost/gamecloud/node-agent/internal/docker"
 	"github.com/hexahost/gamecloud/node-agent/internal/files"
 	"github.com/hexahost/gamecloud/node-agent/internal/protocol"
+	"github.com/hexahost/gamecloud/node-agent/internal/transfer"
+	worldpkg "github.com/hexahost/gamecloud/node-agent/internal/world"
 )

 const (
@@ -352,6 +357,219 @@ func (m *Manager) HandleFilesWrite(ctx context.Context, correlationID string, pa
 	})
 }

+// HandleBackupPrepare runs save-off and save-all flush via RCON.
+func (m *Manager) HandleBackupPrepare(ctx context.Context, correlationID string, meta protocol.OperationMeta) {
+	rec, ok := m.getServer(meta.ServerID)
+	if !ok {
+		m.failOperation(ctx, correlationID, meta, "backup.prepare", "SERVER_NOT_FOUND", "server is not provisioned on this node")
+		return
+	}
+
+	if rec.State != ServerStateRunning {
+		m.completeOperation(ctx, correlationID, meta, "backup.prepare", map[string]string{"skipped": "not_running"})
+		return
+	}
+
+	for _, command := range []string{"save-off", "save-all flush"} {
+		if _, _, err := m.docker.ExecRcon(ctx, rec.ContainerID, command); err != nil {
+			m.failOperation(ctx, correlationID, meta, "backup.prepare", "BACKUP_PREPARE_FAILED", err.Error())
+			return
+		}
+	}
+
+	m.completeOperation(ctx, correlationID, meta, "backup.prepare", map[string]string{"status": "ok"})
+}
+
+// HandleBackupRelease runs save-on via RCON.
+func (m *Manager) HandleBackupRelease(ctx context.Context, correlationID string, meta protocol.OperationMeta) {
+	rec, ok := m.getServer(meta.ServerID)
+	if !ok {
+		m.failOperation(ctx, correlationID, meta, "backup.release", "SERVER_NOT_FOUND", "server is not provisioned on this node")
+		return
+	}
+
+	if rec.State != ServerStateRunning {
+		m.completeOperation(ctx, correlationID, meta, "backup.release", map[string]string{"skipped": "not_running"})
+		return
+	}
+
+	if _, _, err := m.docker.ExecRcon(ctx, rec.ContainerID, "save-on"); err != nil {
+		m.failOperation(ctx, correlationID, meta, "backup.release", "BACKUP_RELEASE_FAILED", err.Error())
+		return
+	}
+
+	m.completeOperation(ctx, correlationID, meta, "backup.release", map[string]string{"status": "ok"})
+}
+
+// HandleWorldValidate validates a world directory and lists worlds.
+func (m *Manager) HandleWorldValidate(ctx context.Context, correlationID string, payload protocol.ServerWorldValidatePayload) {
+	meta := payload.OperationMeta
+	rec, ok := m.getServer(meta.ServerID)
+	if !ok {
+		m.failOperation(ctx, correlationID, meta, "world.validate", "SERVER_NOT_FOUND", "server is not provisioned on this node")
+		return
+	}
+
+	worldName := payload.WorldName
+	if worldName == "" {
+		worldName = "world"
+	}
+
+	if err := worldpkg.ValidateWorld(rec.DataPath, worldName); err != nil {
+		m.failOperation(ctx, correlationID, meta, "world.validate", "WORLD_INVALID", err.Error())
+		return
+	}
+
+	worlds, err := worldpkg.ListWorlds(rec.DataPath, worldName)
+	if err != nil {
+		m.failOperation(ctx, correlationID, meta, "world.validate", "WORLD_LIST_FAILED", err.Error())
+		return
+	}
+
+	m.completeOperation(ctx, correlationID, meta, "world.validate", map[string]any{
+		"valid":     true,
+		"worldName": worldName,
+		"worlds":    worlds,
+	})
+}
+
+// HandleWorldArchive creates a tar.gz archive of a world directory.
+func (m *Manager) HandleWorldArchive(ctx context.Context, correlationID string, payload protocol.ServerWorldArchivePayload) {
+	meta := payload.OperationMeta
+	rec, ok := m.getServer(meta.ServerID)
+	if !ok {
+		m.failOperation(ctx, correlationID, meta, "world.archive", "SERVER_NOT_FOUND", "server is not provisioned on this node")
+		return
+	}
+
+	worldName := payload.WorldName
+	if worldName == "" {
+		worldName = "world"
+	}
+
+	if err := worldpkg.ValidateWorld(rec.DataPath, worldName); err != nil {
+		m.failOperation(ctx, correlationID, meta, "world.archive", "WORLD_INVALID", err.Error())
+		return
+	}
+
+	archiveDir := filepath.Join(rec.DataPath, ".hgc", "archives")
+	archiveID := payload.ArchiveID
+	if archiveID == "" {
+		archiveID = meta.ServerID
+	}
+	outputPath := filepath.Join(archiveDir, archiveID+".tar.gz")
+	sourceDir := filepath.Join(rec.DataPath, worldName)
+
+	checksum, size, err := archive.CreateTarGz(sourceDir, outputPath)
+	if err != nil {
+		m.failOperation(ctx, correlationID, meta, "world.archive", "ARCHIVE_FAILED", err.Error())
+		return
+	}
+
+	m.completeOperation(ctx, correlationID, meta, "world.archive", map[string]any{
+		"localPath": outputPath,
+		"sha256":    checksum,
+		"sizeBytes": size,
+		"worldName": worldName,
+	})
+}
+
+// HandleStorageUpload uploads a local archive to object storage.
+func (m *Manager) HandleStorageUpload(ctx context.Context, correlationID string, payload protocol.ServerStorageUploadPayload) {
+	meta := payload.OperationMeta
+
+	if err := transfer.UploadFile(payload.LocalPath, payload.UploadURL); err != nil {
+		m.failOperation(ctx, correlationID, meta, "storage.upload", "UPLOAD_FAILED", err.Error())
+		return
+	}
+
+	m.completeOperation(ctx, correlationID, meta, "storage.upload", map[string]string{
+		"localPath": payload.LocalPath,
+	})
+}
+
+// HandleStorageDownload downloads an archive from object storage.
+func (m *Manager) HandleStorageDownload(ctx context.Context, correlationID string, payload protocol.ServerStorageDownloadPayload) {
+	meta := payload.OperationMeta
+
+	if err := transfer.DownloadFile(payload.DownloadURL, payload.LocalPath); err != nil {
+		m.failOperation(ctx, correlationID, meta, "storage.download", "DOWNLOAD_FAILED", err.Error())
+		return
+	}
+
+	m.completeOperation(ctx, correlationID, meta, "storage.download", map[string]string{
+		"localPath": payload.LocalPath,
+	})
+}
+
+// HandleWorldReplace replaces a world directory from a local archive.
+func (m *Manager) HandleWorldReplace(ctx context.Context, correlationID string, payload protocol.ServerWorldReplacePayload) {
+	meta := payload.OperationMeta
+	rec, ok := m.getServer(meta.ServerID)
+	if !ok {
+		m.failOperation(ctx, correlationID, meta, "world.replace", "SERVER_NOT_FOUND", "server is not provisioned on this node")
+		return
+	}
+
+	if rec.State == ServerStateRunning {
+		m.failOperation(ctx, correlationID, meta, "world.replace", "SERVER_RUNNING", "server must be stopped before world replace")
+		return
+	}
+
+	worldName := payload.WorldName
+	if worldName == "" {
+		worldName = "world"
+	}
+
+	worldDir := filepath.Join(rec.DataPath, worldName)
+	tempDir := filepath.Join(rec.DataPath, ".hgc", "restore", meta.ServerID)
+	if err := os.RemoveAll(tempDir); err != nil {
+		m.failOperation(ctx, correlationID, meta, "world.replace", "RESTORE_PREP_FAILED", err.Error())
+		return
+	}
+	if err := os.MkdirAll(tempDir, 0o755); err != nil {
+		m.failOperation(ctx, correlationID, meta, "world.replace", "RESTORE_PREP_FAILED", err.Error())
+		return
+	}
+
+	if err := archive.ExtractTarGz(payload.ArchivePath, tempDir); err != nil {
+		m.failOperation(ctx, correlationID, meta, "world.replace", "EXTRACT_FAILED", err.Error())
+		return
+	}
+
+	extractedWorld := filepath.Join(tempDir, worldName)
+	if info, err := os.Stat(extractedWorld); err != nil || !info.IsDir() {
+		extractedWorld = tempDir
+	}
+
+	if err := worldpkg.ValidateWorld(filepath.Dir(extractedWorld), filepath.Base(extractedWorld)); err != nil {
+		m.failOperation(ctx, correlationID, meta, "world.replace", "WORLD_INVALID", err.Error())
+		return
+	}
+
+	backupDir := worldDir + ".bak"
+	_ = os.RemoveAll(backupDir)
+	if _, err := os.Stat(worldDir); err == nil {
+		if err := os.Rename(worldDir, backupDir); err != nil {
+			m.failOperation(ctx, correlationID, meta, "world.replace", "REPLACE_FAILED", err.Error())
+			return
+		}
+	}
+
+	if err := os.Rename(extractedWorld, worldDir); err != nil {
+		_ = os.Rename(backupDir, worldDir)
+		m.failOperation(ctx, correlationID, meta, "world.replace", "REPLACE_FAILED", err.Error())
+		return
+	}
+
+	_ = os.RemoveAll(tempDir)
+	_ = os.RemoveAll(backupDir)
+
+	m.completeOperation(ctx, correlationID, meta, "world.replace", map[string]string{
+		"worldName": worldName,
+	})
+}
+
 func (m *Manager) getServer(serverID string) (*serverRecord, bool) {
 	m.mu.RLock()
 	defer m.mu.RUnlock()
--- a/apps/node-agent/internal/transfer/transfer.go
+++ b/apps/node-agent/internal/transfer/transfer.go
@@ -0,0 +1,73 @@
+package transfer
+
+import (
+	"fmt"
+	"io"
+	"net/http"
+	"os"
+	"path/filepath"
+	"time"
+)
+
+// UploadFile PUTs a local file to a presigned URL.
+func UploadFile(localPath, uploadURL string) error {
+	file, err := os.Open(localPath)
+	if err != nil {
+		return err
+	}
+	defer file.Close()
+
+	stat, err := file.Stat()
+	if err != nil {
+		return err
+	}
+
+	request, err := http.NewRequest(http.MethodPut, uploadURL, file)
+	if err != nil {
+		return err
+	}
+	request.ContentLength = stat.Size()
+	request.Header.Set("Content-Type", "application/gzip")
+
+	client := &http.Client{Timeout: 30 * time.Minute}
+	response, err := client.Do(request)
+	if err != nil {
+		return err
+	}
+	defer response.Body.Close()
+
+	if response.StatusCode < 200 || response.StatusCode >= 300 {
+		body, _ := io.ReadAll(io.LimitReader(response.Body, 4096))
+		return fmt.Errorf("upload failed with status %d: %s", response.StatusCode, string(body))
+	}
+
+	return nil
+}
+
+// DownloadFile GETs a remote file to a local path.
+func DownloadFile(downloadURL, localPath string) error {
+	if err := os.MkdirAll(filepath.Dir(localPath), 0o755); err != nil {
+		return err
+	}
+
+	client := &http.Client{Timeout: 30 * time.Minute}
+	response, err := client.Get(downloadURL)
+	if err != nil {
+		return err
+	}
+	defer response.Body.Close()
+
+	if response.StatusCode < 200 || response.StatusCode >= 300 {
+		body, _ := io.ReadAll(io.LimitReader(response.Body, 4096))
+		return fmt.Errorf("download failed with status %d: %s", response.StatusCode, string(body))
+	}
+
+	file, err := os.Create(localPath)
+	if err != nil {
+		return err
+	}
+	defer file.Close()
+
+	_, err = io.Copy(file, response.Body)
+	return err
+}
--- a/apps/node-agent/internal/world/world.go
+++ b/apps/node-agent/internal/world/world.go
@@ -0,0 +1,114 @@
+package world
+
+import (
+	"fmt"
+	"os"
+	"path/filepath"
+	"strings"
+)
+
+// Summary describes a discovered Minecraft world directory.
+type Summary struct {
+	Name        string `json:"name"`
+	Path        string `json:"path"`
+	SizeBytes   int64  `json:"sizeBytes"`
+	HasLevelDat bool   `json:"hasLevelDat"`
+}
+
+// ValidateWorld checks that a world directory contains level.dat.
+func ValidateWorld(dataPath, worldName string) error {
+	worldName = strings.TrimSpace(worldName)
+	if worldName == "" || strings.Contains(worldName, "..") || strings.ContainsAny(worldName, `/\`) {
+		return fmt.Errorf("invalid world name")
+	}
+
+	worldDir := filepath.Join(dataPath, worldName)
+	levelDat := filepath.Join(worldDir, "level.dat")
+
+	info, err := os.Stat(levelDat)
+	if err != nil {
+		return fmt.Errorf("level.dat not found in world directory")
+	}
+	if info.IsDir() {
+		return fmt.Errorf("level.dat is not a file")
+	}
+
+	return nil
+}
+
+// ListWorlds scans the server data directory for world folders.
+func ListWorlds(dataPath, activeWorldName string) ([]Summary, error) {
+	entries, err := os.ReadDir(dataPath)
+	if err != nil {
+		return nil, err
+	}
+
+	worlds := make([]Summary, 0)
+
+	for _, entry := range entries {
+		if !entry.IsDir() || strings.HasPrefix(entry.Name(), ".") {
+			continue
+		}
+
+		worldPath := filepath.Join(dataPath, entry.Name())
+		levelDat := filepath.Join(worldPath, "level.dat")
+		hasLevelDat := false
+		if info, err := os.Stat(levelDat); err == nil && !info.IsDir() {
+			hasLevelDat = true
+		}
+
+		size, err := dirSize(worldPath)
+		if err != nil {
+			return nil, err
+		}
+
+		worlds = append(worlds, Summary{
+			Name:        entry.Name(),
+			Path:        entry.Name(),
+			SizeBytes:   size,
+			HasLevelDat: hasLevelDat,
+		})
+	}
+
+	if activeWorldName != "" {
+		found := false
+		for _, world := range worlds {
+			if world.Name == activeWorldName {
+				found = true
+				break
+			}
+		}
+		if !found {
+			if err := ValidateWorld(dataPath, activeWorldName); err == nil {
+				size, sizeErr := dirSize(filepath.Join(dataPath, activeWorldName))
+				if sizeErr != nil {
+					return nil, sizeErr
+				}
+				worlds = append(worlds, Summary{
+					Name:        activeWorldName,
+					Path:        activeWorldName,
+					SizeBytes:   size,
+					HasLevelDat: true,
+				})
+			}
+		}
+	}
+
+	return worlds, nil
+}
+
+func dirSize(root string) (int64, error) {
+	var total int64
+
+	err := filepath.Walk(root, func(_ string, info os.FileInfo, err error) error {
+		if err != nil {
+			return err
+		}
+		if !info.IsDir() {
+			total += info.Size()
+		}
+		return nil
+	})
+
+	return total, err
+}
--- a/apps/node-agent/internal/ws/client.go
+++ b/apps/node-agent/internal/ws/client.go
@@ -314,6 +314,62 @@ func (c *Client) dispatch(ctx context.Context, env *protocol.Envelope) {
 		}
 		c.runtime.HandleFilesWrite(ctx, env.MessageID, payload)

+	case protocol.TypeServerBackupPrepare:
+		var meta protocol.OperationMeta
+		if err := json.Unmarshal(env.Payload, &meta); err != nil {
+			c.log.Warn("decode server.backup.prepare", "error", err)
+			return
+		}
+		c.runtime.HandleBackupPrepare(ctx, env.MessageID, meta)
+
+	case protocol.TypeServerBackupRelease:
+		var meta protocol.OperationMeta
+		if err := json.Unmarshal(env.Payload, &meta); err != nil {
+			c.log.Warn("decode server.backup.release", "error", err)
+			return
+		}
+		c.runtime.HandleBackupRelease(ctx, env.MessageID, meta)
+
+	case protocol.TypeServerWorldValidate:
+		var payload protocol.ServerWorldValidatePayload
+		if err := json.Unmarshal(env.Payload, &payload); err != nil {
+			c.log.Warn("decode server.world.validate", "error", err)
+			return
+		}
+		c.runtime.HandleWorldValidate(ctx, env.MessageID, payload)
+
+	case protocol.TypeServerWorldArchive:
+		var payload protocol.ServerWorldArchivePayload
+		if err := json.Unmarshal(env.Payload, &payload); err != nil {
+			c.log.Warn("decode server.world.archive", "error", err)
+			return
+		}
+		c.runtime.HandleWorldArchive(ctx, env.MessageID, payload)
+
+	case protocol.TypeServerStorageUpload:
+		var payload protocol.ServerStorageUploadPayload
+		if err := json.Unmarshal(env.Payload, &payload); err != nil {
+			c.log.Warn("decode server.storage.upload", "error", err)
+			return
+		}
+		c.runtime.HandleStorageUpload(ctx, env.MessageID, payload)
+
+	case protocol.TypeServerStorageDownload:
+		var payload protocol.ServerStorageDownloadPayload
+		if err := json.Unmarshal(env.Payload, &payload); err != nil {
+			c.log.Warn("decode server.storage.download", "error", err)
+			return
+		}
+		c.runtime.HandleStorageDownload(ctx, env.MessageID, payload)
+
+	case protocol.TypeServerWorldReplace:
+		var payload protocol.ServerWorldReplacePayload
+		if err := json.Unmarshal(env.Payload, &payload); err != nil {
+			c.log.Warn("decode server.world.replace", "error", err)
+			return
+		}
+		c.runtime.HandleWorldReplace(ctx, env.MessageID, payload)
+
 	default:
 		c.log.Debug("ignored control message", "type", env.Type)
 	}
--- a/apps/web/messages/de.json
+++ b/apps/web/messages/de.json
@@ -190,7 +190,9 @@
      "console": "Konsole",
      "files": "Dateien",
      "properties": "Eigenschaften",
-      "players": "Spieler"
+      "players": "Spieler",
+      "worlds": "Welten",
+      "backups": "Backups"
    },
    "console": {
      "loading": "Wird geladen…",
@@ -274,6 +276,47 @@
      "errors": {
        "loadFailed": "Spielerliste konnte nicht geladen werden."
      }
+    },
+    "worlds": {
+      "loading": "Wird geladen…",
+      "loadError": "Weltinformationen konnten nicht geladen werden.",
+      "activeWorld": "Aktive Welt: {name}",
+      "stoppedHint": "Upload und Ersetzen erfordern einen gestoppten Server.",
+      "worldName": "Weltname",
+      "uploadArchive": "Welt-Archiv (.tar.gz)",
+      "uploadError": "Welt-Upload fehlgeschlagen.",
+      "download": "Welt herunterladen",
+      "downloadError": "Download konnte nicht gestartet werden.",
+      "downloadPending": "Backup wird erstellt. Versuchen Sie den Download in Kürze erneut.",
+      "empty": "Keine Welten gefunden.",
+      "validWorld": "Gültige Welt",
+      "invalidWorld": "Ungültig",
+      "active": "Aktiv"
+    },
+    "backups": {
+      "loading": "Wird geladen…",
+      "loadError": "Backups konnten nicht geladen werden.",
+      "create": "Backup erstellen",
+      "manualLabel": "Manuelles Backup",
+      "createError": "Backup konnte nicht erstellt werden.",
+      "download": "Download",
+      "downloadError": "Download-URL konnte nicht erstellt werden.",
+      "restore": "Wiederherstellen",
+      "restoreConfirm": "Welt wirklich aus diesem Backup wiederherstellen? Der Server muss gestoppt sein.",
+      "restoreError": "Wiederherstellung fehlgeschlagen.",
+      "delete": "Löschen",
+      "deleteConfirm": "Backup wirklich löschen?",
+      "deleteError": "Backup konnte nicht gelöscht werden.",
+      "enableSchedule": "Geplante Backups aktivieren",
+      "disableSchedule": "Geplante Backups deaktivieren",
+      "scheduleError": "Zeitplan konnte nicht aktualisiert werden.",
+      "scheduleInfo": "Intervall: alle {hours}h · Aufbewahrung: {retention} Backups",
+      "label": "Bezeichnung",
+      "status": "Status",
+      "size": "Größe",
+      "created": "Erstellt",
+      "actions": "Aktionen",
+      "empty": "Noch keine Backups vorhanden."
    }
  }
 }
--- a/apps/web/messages/en.json
+++ b/apps/web/messages/en.json
@@ -190,7 +190,9 @@
      "console": "Console",
      "files": "Files",
      "properties": "Properties",
-      "players": "Players"
+      "players": "Players",
+      "worlds": "Worlds",
+      "backups": "Backups"
    },
    "console": {
      "loading": "Loading…",
@@ -274,6 +276,47 @@
      "errors": {
        "loadFailed": "Could not load player list."
      }
+    },
+    "worlds": {
+      "loading": "Loading…",
+      "loadError": "Could not load world information.",
+      "activeWorld": "Active world: {name}",
+      "stoppedHint": "Upload and replace require a stopped server.",
+      "worldName": "World name",
+      "uploadArchive": "World archive (.tar.gz)",
+      "uploadError": "World upload failed.",
+      "download": "Download world",
+      "downloadError": "Could not start download.",
+      "downloadPending": "Backup is being created. Try the download again shortly.",
+      "empty": "No worlds found.",
+      "validWorld": "Valid world",
+      "invalidWorld": "Invalid",
+      "active": "Active"
+    },
+    "backups": {
+      "loading": "Loading…",
+      "loadError": "Could not load backups.",
+      "create": "Create backup",
+      "manualLabel": "Manual backup",
+      "createError": "Could not create backup.",
+      "download": "Download",
+      "downloadError": "Could not create download URL.",
+      "restore": "Restore",
+      "restoreConfirm": "Restore the world from this backup? The server must be stopped.",
+      "restoreError": "Restore failed.",
+      "delete": "Delete",
+      "deleteConfirm": "Delete this backup?",
+      "deleteError": "Could not delete backup.",
+      "enableSchedule": "Enable scheduled backups",
+      "disableSchedule": "Disable scheduled backups",
+      "scheduleError": "Could not update schedule.",
+      "scheduleInfo": "Interval: every {hours}h · Retention: {retention} backups",
+      "label": "Label",
+      "status": "Status",
+      "size": "Size",
+      "created": "Created",
+      "actions": "Actions",
+      "empty": "No backups yet."
    }
  }
 }
--- a/apps/web/src/app/[locale]/servers/[id]/backups/page.tsx
+++ b/apps/web/src/app/[locale]/servers/[id]/backups/page.tsx
@@ -0,0 +1,13 @@
+import { setRequestLocale } from "next-intl/server";
+import { ServerBackups } from "@/components/servers/server-backups";
+
+interface ServerBackupsPageProps {
+  params: Promise<{ locale: string; id: string }>;
+}
+
+export default async function ServerBackupsPage({ params }: ServerBackupsPageProps) {
+  const { locale, id } = await params;
+  setRequestLocale(locale);
+
+  return <ServerBackups serverId={id} />;
+}
--- a/apps/web/src/app/[locale]/servers/[id]/worlds/page.tsx
+++ b/apps/web/src/app/[locale]/servers/[id]/worlds/page.tsx
@@ -0,0 +1,13 @@
+import { setRequestLocale } from "next-intl/server";
+import { ServerWorlds } from "@/components/servers/server-worlds";
+
+interface ServerWorldsPageProps {
+  params: Promise<{ locale: string; id: string }>;
+}
+
+export default async function ServerWorldsPage({ params }: ServerWorldsPageProps) {
+  const { locale, id } = await params;
+  setRequestLocale(locale);
+
+  return <ServerWorlds serverId={id} />;
+}
--- a/apps/web/src/components/servers/server-backups.tsx
+++ b/apps/web/src/components/servers/server-backups.tsx
@@ -0,0 +1,237 @@
+"use client";
+
+import { useCallback, useEffect, useState } from "react";
+import { useTranslations } from "next-intl";
+
+import { Button } from "@hexahost/ui";
+
+import {
+  createBackup,
+  deleteBackup,
+  getBackupDownloadUrl,
+  getBackupSchedule,
+  listBackups,
+  restoreBackup,
+  updateBackupSchedule,
+  type BackupItem,
+  type BackupSchedule,
+} from "@/lib/api/backups";
+
+interface ServerBackupsProps {
+  serverId: string;
+}
+
+function formatBytes(value: string | null): string {
+  if (!value) {
+    return "—";
+  }
+  const bytes = Number(value);
+  if (Number.isNaN(bytes)) {
+    return value;
+  }
+  if (bytes < 1024) {
+    return `${bytes} B`;
+  }
+  if (bytes < 1024 * 1024) {
+    return `${(bytes / 1024).toFixed(1)} KB`;
+  }
+  return `${(bytes / (1024 * 1024)).toFixed(1)} MB`;
+}
+
+export function ServerBackups({ serverId }: ServerBackupsProps) {
+  const t = useTranslations("servers.backups");
+  const [backups, setBackups] = useState<BackupItem[]>([]);
+  const [schedule, setSchedule] = useState<BackupSchedule | null>(null);
+  const [loading, setLoading] = useState(true);
+  const [busy, setBusy] = useState(false);
+  const [error, setError] = useState<string | null>(null);
+
+  const refresh = useCallback(async () => {
+    setLoading(true);
+    setError(null);
+    try {
+      const [backupList, scheduleData] = await Promise.all([
+        listBackups(serverId),
+        getBackupSchedule(serverId),
+      ]);
+      setBackups(backupList.backups);
+      setSchedule(scheduleData);
+    } catch (err) {
+      setError(err instanceof Error ? err.message : t("loadError"));
+    } finally {
+      setLoading(false);
+    }
+  }, [serverId, t]);
+
+  useEffect(() => {
+    void refresh();
+  }, [refresh]);
+
+  async function handleCreateBackup() {
+    setBusy(true);
+    setError(null);
+    try {
+      await createBackup(serverId, t("manualLabel"));
+      await refresh();
+    } catch (err) {
+      setError(err instanceof Error ? err.message : t("createError"));
+    } finally {
+      setBusy(false);
+    }
+  }
+
+  async function handleDownload(backupId: string) {
+    try {
+      const { downloadUrl } = await getBackupDownloadUrl(serverId, backupId);
+      window.open(downloadUrl, "_blank", "noopener,noreferrer");
+    } catch (err) {
+      setError(err instanceof Error ? err.message : t("downloadError"));
+    }
+  }
+
+  async function handleRestore(backupId: string) {
+    if (!window.confirm(t("restoreConfirm"))) {
+      return;
+    }
+    setBusy(true);
+    try {
+      await restoreBackup(serverId, backupId);
+      await refresh();
+    } catch (err) {
+      setError(err instanceof Error ? err.message : t("restoreError"));
+    } finally {
+      setBusy(false);
+    }
+  }
+
+  async function handleDelete(backupId: string) {
+    if (!window.confirm(t("deleteConfirm"))) {
+      return;
+    }
+    setBusy(true);
+    try {
+      await deleteBackup(serverId, backupId);
+      await refresh();
+    } catch (err) {
+      setError(err instanceof Error ? err.message : t("deleteError"));
+    } finally {
+      setBusy(false);
+    }
+  }
+
+  async function toggleSchedule(enabled: boolean) {
+    if (!schedule) {
+      return;
+    }
+    setBusy(true);
+    try {
+      const updated = await updateBackupSchedule(serverId, { enabled });
+      setSchedule(updated);
+    } catch (err) {
+      setError(err instanceof Error ? err.message : t("scheduleError"));
+    } finally {
+      setBusy(false);
+    }
+  }
+
+  if (loading) {
+    return <p className="text-sm text-zinc-500">{t("loading")}</p>;
+  }
+
+  return (
+    <div className="space-y-6">
+      {error ? (
+        <p className="rounded-md border border-red-200 bg-red-50 px-3 py-2 text-sm text-red-700 dark:border-red-900 dark:bg-red-950 dark:text-red-300">
+          {error}
+        </p>
+      ) : null}
+
+      <div className="flex flex-wrap items-center gap-3">
+        <Button onClick={() => void handleCreateBackup()} disabled={busy}>
+          {t("create")}
+        </Button>
+        {schedule ? (
+          <Button
+            variant="secondary"
+            onClick={() => void toggleSchedule(!schedule.enabled)}
+            disabled={busy}
+          >
+            {schedule.enabled ? t("disableSchedule") : t("enableSchedule")}
+          </Button>
+        ) : null}
+      </div>
+
+      {schedule ? (
+        <p className="text-sm text-zinc-600 dark:text-zinc-400">
+          {t("scheduleInfo", {
+            hours: schedule.intervalHours,
+            retention: schedule.retentionCount,
+          })}
+        </p>
+      ) : null}
+
+      <div className="overflow-x-auto rounded-lg border border-zinc-200 dark:border-zinc-800">
+        <table className="min-w-full divide-y divide-zinc-200 text-sm dark:divide-zinc-800">
+          <thead className="bg-zinc-50 dark:bg-zinc-900">
+            <tr>
+              <th className="px-4 py-2 text-left font-medium">{t("label")}</th>
+              <th className="px-4 py-2 text-left font-medium">{t("status")}</th>
+              <th className="px-4 py-2 text-left font-medium">{t("size")}</th>
+              <th className="px-4 py-2 text-left font-medium">{t("created")}</th>
+              <th className="px-4 py-2 text-right font-medium">{t("actions")}</th>
+            </tr>
+          </thead>
+          <tbody className="divide-y divide-zinc-200 dark:divide-zinc-800">
+            {backups.length === 0 ? (
+              <tr>
+                <td colSpan={5} className="px-4 py-6 text-center text-zinc-500">
+                  {t("empty")}
+                </td>
+              </tr>
+            ) : (
+              backups.map((backup) => (
+                <tr key={backup.id}>
+                  <td className="px-4 py-2">{backup.label ?? backup.type}</td>
+                  <td className="px-4 py-2">{backup.status}</td>
+                  <td className="px-4 py-2">{formatBytes(backup.sizeBytes)}</td>
+                  <td className="px-4 py-2">
+                    {new Date(backup.createdAt).toLocaleString()}
+                  </td>
+                  <td className="px-4 py-2 text-right space-x-2">
+                    {backup.status === "AVAILABLE" ? (
+                      <>
+                        <Button
+                          size="sm"
+                          variant="secondary"
+                          onClick={() => void handleDownload(backup.id)}
+                        >
+                          {t("download")}
+                        </Button>
+                        <Button
+                          size="sm"
+                          variant="secondary"
+                          onClick={() => void handleRestore(backup.id)}
+                          disabled={busy}
+                        >
+                          {t("restore")}
+                        </Button>
+                      </>
+                    ) : null}
+                    <Button
+                      size="sm"
+                      variant="ghost"
+                      onClick={() => void handleDelete(backup.id)}
+                      disabled={busy}
+                    >
+                      {t("delete")}
+                    </Button>
+                  </td>
+                </tr>
+              ))
+            )}
+          </tbody>
+        </table>
+      </div>
+    </div>
+  );
+}
--- a/apps/web/src/components/servers/server-tabs.tsx
+++ b/apps/web/src/components/servers/server-tabs.tsx
@@ -13,6 +13,8 @@ const tabs = [
  { key: "files", suffix: "/files" },
  { key: "properties", suffix: "/properties" },
  { key: "players", suffix: "/players" },
+  { key: "worlds", suffix: "/worlds" },
+  { key: "backups", suffix: "/backups" },
 ] as const;

 export function ServerTabs({ serverId }: ServerTabsProps) {
--- a/apps/web/src/components/servers/server-worlds.tsx
+++ b/apps/web/src/components/servers/server-worlds.tsx
@@ -0,0 +1,172 @@
+"use client";
+
+import { useCallback, useEffect, useState } from "react";
+import { useTranslations } from "next-intl";
+
+import { Button } from "@hexahost/ui";
+
+import {
+  completeWorldUpload,
+  getWorldInfo,
+  initiateWorldUpload,
+  requestWorldDownload,
+  type WorldSummary,
+} from "@/lib/api/worlds";
+import { getBackupDownloadUrl } from "@/lib/api/backups";
+
+interface ServerWorldsProps {
+  serverId: string;
+}
+
+function formatBytes(value: string): string {
+  const bytes = Number(value);
+  if (Number.isNaN(bytes)) {
+    return value;
+  }
+  if (bytes < 1024 * 1024) {
+    return `${(bytes / 1024).toFixed(1)} KB`;
+  }
+  return `${(bytes / (1024 * 1024)).toFixed(1)} MB`;
+}
+
+export function ServerWorlds({ serverId }: ServerWorldsProps) {
+  const t = useTranslations("servers.worlds");
+  const [activeWorldName, setActiveWorldName] = useState("world");
+  const [worlds, setWorlds] = useState<WorldSummary[]>([]);
+  const [loading, setLoading] = useState(true);
+  const [busy, setBusy] = useState(false);
+  const [error, setError] = useState<string | null>(null);
+  const [worldName, setWorldName] = useState("world");
+
+  const refresh = useCallback(async () => {
+    setLoading(true);
+    setError(null);
+    try {
+      const info = await getWorldInfo(serverId);
+      setActiveWorldName(info.activeWorldName);
+      setWorlds(info.worlds);
+    } catch (err) {
+      setError(err instanceof Error ? err.message : t("loadError"));
+    } finally {
+      setLoading(false);
+    }
+  }, [serverId, t]);
+
+  useEffect(() => {
+    void refresh();
+  }, [refresh]);
+
+  async function handleUpload(file: File) {
+    setBusy(true);
+    setError(null);
+    try {
+      const init = await initiateWorldUpload(serverId, worldName);
+      const response = await fetch(init.uploadUrl, {
+        method: "PUT",
+        body: file,
+        headers: { "Content-Type": "application/gzip" },
+      });
+      if (!response.ok) {
+        throw new Error(t("uploadError"));
+      }
+      await completeWorldUpload(serverId, init.uploadId);
+      await refresh();
+    } catch (err) {
+      setError(err instanceof Error ? err.message : t("uploadError"));
+    } finally {
+      setBusy(false);
+    }
+  }
+
+  async function handleDownload() {
+    setBusy(true);
+    setError(null);
+    try {
+      const { backupId } = await requestWorldDownload(serverId);
+      const { downloadUrl } = await getBackupDownloadUrl(serverId, backupId);
+      if (downloadUrl) {
+        window.open(downloadUrl, "_blank", "noopener,noreferrer");
+      } else {
+        setError(t("downloadPending"));
+      }
+    } catch (err) {
+      setError(err instanceof Error ? err.message : t("downloadError"));
+    } finally {
+      setBusy(false);
+    }
+  }
+
+  if (loading) {
+    return <p className="text-sm text-zinc-500">{t("loading")}</p>;
+  }
+
+  return (
+    <div className="space-y-6">
+      {error ? (
+        <p className="rounded-md border border-red-200 bg-red-50 px-3 py-2 text-sm text-red-700 dark:border-red-900 dark:bg-red-950 dark:text-red-300">
+          {error}
+        </p>
+      ) : null}
+
+      <div className="rounded-lg border border-zinc-200 p-4 dark:border-zinc-800">
+        <p className="text-sm text-zinc-600 dark:text-zinc-400">
+          {t("activeWorld", { name: activeWorldName })}
+        </p>
+        <p className="mt-1 text-xs text-zinc-500">{t("stoppedHint")}</p>
+      </div>
+
+      <div className="flex flex-wrap gap-3 items-end">
+        <label className="block text-sm">
+          <span className="mb-1 block text-zinc-600 dark:text-zinc-400">
+            {t("worldName")}
+          </span>
+          <input
+            className="rounded-md border border-zinc-300 bg-white px-3 py-2 text-sm dark:border-zinc-700 dark:bg-zinc-950"
+            value={worldName}
+            onChange={(event) => setWorldName(event.target.value)}
+          />
+        </label>
+        <label className="block text-sm">
+          <span className="mb-1 block text-zinc-600 dark:text-zinc-400">
+            {t("uploadArchive")}
+          </span>
+          <input
+            type="file"
+            accept=".tar.gz,.tgz,application/gzip"
+            disabled={busy}
+            onChange={(event) => {
+              const file = event.target.files?.[0];
+              if (file) {
+                void handleUpload(file);
+              }
+            }}
+          />
+        </label>
+        <Button variant="secondary" onClick={() => void handleDownload()} disabled={busy}>
+          {t("download")}
+        </Button>
+      </div>
+
+      <ul className="divide-y divide-zinc-200 rounded-lg border border-zinc-200 dark:divide-zinc-800 dark:border-zinc-800">
+        {worlds.length === 0 ? (
+          <li className="px-4 py-6 text-center text-sm text-zinc-500">{t("empty")}</li>
+        ) : (
+          worlds.map((world) => (
+            <li key={world.name} className="flex items-center justify-between px-4 py-3 text-sm">
+              <div>
+                <p className="font-medium">{world.name}</p>
+                <p className="text-zinc-500">
+                  {world.hasLevelDat ? t("validWorld") : t("invalidWorld")} ·{" "}
+                  {formatBytes(world.sizeBytes)}
+                </p>
+              </div>
+              {world.name === activeWorldName ? (
+                <span className="text-xs text-sky-600 dark:text-sky-400">{t("active")}</span>
+              ) : null}
+            </li>
+          ))
+        )}
+      </ul>
+    </div>
+  );
+}
--- a/apps/web/src/lib/api/backups.ts
+++ b/apps/web/src/lib/api/backups.ts
@@ -0,0 +1,80 @@
+import { apiFetch } from "./auth";
+
+export interface BackupItem {
+  id: string;
+  serverId: string;
+  type: string;
+  status: string;
+  sizeBytes: string | null;
+  sha256: string | null;
+  label: string | null;
+  failureReason: string | null;
+  createdAt: string;
+  completedAt: string | null;
+}
+
+export interface BackupListResponse {
+  backups: BackupItem[];
+}
+
+export interface BackupSchedule {
+  enabled: boolean;
+  intervalHours: number;
+  retentionCount: number;
+  nextRunAt: string | null;
+  lastRunAt: string | null;
+}
+
+export async function listBackups(serverId: string): Promise<BackupListResponse> {
+  return apiFetch<BackupListResponse>(`/servers/${serverId}/backups`);
+}
+
+export async function createBackup(
+  serverId: string,
+  label?: string,
+): Promise<{ backup: BackupItem; jobId?: string }> {
+  return apiFetch(`/servers/${serverId}/backups`, {
+    method: "POST",
+    body: JSON.stringify({ label }),
+  });
+}
+
+export async function deleteBackup(
+  serverId: string,
+  backupId: string,
+): Promise<BackupItem> {
+  return apiFetch(`/servers/${serverId}/backups/${backupId}`, {
+    method: "DELETE",
+  });
+}
+
+export async function getBackupDownloadUrl(
+  serverId: string,
+  backupId: string,
+): Promise<{ downloadUrl: string; expiresAt: string }> {
+  return apiFetch(`/servers/${serverId}/backups/${backupId}/download-url`);
+}
+
+export async function restoreBackup(
+  serverId: string,
+  backupId: string,
+): Promise<unknown> {
+  return apiFetch(`/servers/${serverId}/backups/${backupId}/restore`, {
+    method: "POST",
+    body: JSON.stringify({ confirm: true }),
+  });
+}
+
+export async function getBackupSchedule(serverId: string): Promise<BackupSchedule> {
+  return apiFetch(`/servers/${serverId}/backups/schedule`);
+}
+
+export async function updateBackupSchedule(
+  serverId: string,
+  input: Partial<BackupSchedule>,
+): Promise<BackupSchedule> {
+  return apiFetch(`/servers/${serverId}/backups/schedule`, {
+    method: "PATCH",
+    body: JSON.stringify(input),
+  });
+}
--- a/apps/web/src/lib/api/worlds.ts
+++ b/apps/web/src/lib/api/worlds.ts
@@ -0,0 +1,48 @@
+import { apiFetch } from "./auth";
+
+export interface WorldSummary {
+  name: string;
+  path: string;
+  sizeBytes: string;
+  hasLevelDat: boolean;
+}
+
+export interface WorldInfoResponse {
+  activeWorldName: string;
+  worlds: WorldSummary[];
+}
+
+export async function getWorldInfo(serverId: string): Promise<WorldInfoResponse> {
+  return apiFetch(`/servers/${serverId}/worlds`);
+}
+
+export async function initiateWorldUpload(
+  serverId: string,
+  worldName: string,
+): Promise<{
+  uploadId: string;
+  uploadUrl: string;
+  expiresAt: string;
+}> {
+  return apiFetch(`/servers/${serverId}/worlds/uploads`, {
+    method: "POST",
+    body: JSON.stringify({ worldName }),
+  });
+}
+
+export async function completeWorldUpload(
+  serverId: string,
+  uploadId: string,
+): Promise<unknown> {
+  return apiFetch(`/servers/${serverId}/worlds/uploads/${uploadId}/complete`, {
+    method: "POST",
+  });
+}
+
+export async function requestWorldDownload(
+  serverId: string,
+): Promise<{ backupId: string }> {
+  return apiFetch(`/servers/${serverId}/worlds/download`, {
+    method: "POST",
+  });
+}
--- a/apps/worker/package.json
+++ b/apps/worker/package.json
@@ -11,9 +11,10 @@
    "typecheck": "tsc --noEmit",
    "test": "node --test test/**/*.test.js"
  },
-  "dependencies": {
+    "dependencies": {
    "@hexahost/config": "workspace:*",
    "@hexahost/database": "workspace:*",
+    "@hexahost/storage": "workspace:*",
    "bullmq": "^5.34.10",
    "ioredis": "^5.4.2",
    "nodemailer": "^6.10.0",
--- a/apps/worker/src/agent-bridge.ts
+++ b/apps/worker/src/agent-bridge.ts
@@ -0,0 +1,54 @@
+import { randomUUID } from 'node:crypto';
+
+import { validateConfig } from '@hexahost/config';
+
+import { logger } from './logger';
+import {
+  publishNodeCommand,
+  waitForNodeResponse,
+  type NodeResponseMessage,
+} from './redis';
+
+export interface AgentRequestResult extends NodeResponseMessage {
+  result?: unknown;
+}
+
+export async function sendAgentRequest(
+  nodeId: string,
+  type: string,
+  payload: Record<string, unknown>,
+  timeoutMs = 120_000,
+): Promise<AgentRequestResult> {
+  const messageId = randomUUID();
+
+  await publishNodeCommand({
+    nodeId,
+    envelope: {
+      protocolVersion: 1,
+      messageId,
+      type,
+      timestamp: new Date().toISOString(),
+      payload: {
+        ...payload,
+        generation: payload['generation'] ?? 0,
+      },
+    },
+  });
+
+  const response = await waitForNodeResponse(messageId, timeoutMs);
+
+  if (response === null) {
+    logger.error({ nodeId, type, messageId }, 'Agent request timed out');
+    return {
+      success: false,
+      errorCode: 'AGENT_TIMEOUT',
+      errorMessage: 'Agent request timed out',
+    };
+  }
+
+  return response as AgentRequestResult;
+}
+
+export function loadStorageEnv(): void {
+  validateConfig();
+}
--- a/apps/worker/src/handlers/server-backups.ts
+++ b/apps/worker/src/handlers/server-backups.ts
@@ -0,0 +1,632 @@
+import { Job } from 'bullmq';
+import { z } from 'zod';
+
+import { prisma } from '@hexahost/database';
+import {
+  backupObjectKey,
+  createPresignedGetUrl,
+  createPresignedPutUrl,
+  createS3Client,
+  deleteStoredObject,
+  loadStorageConfig,
+} from '@hexahost/storage';
+
+import { sendAgentRequest } from '../agent-bridge';
+import { logger } from '../logger';
+import { transitionServerStatus } from '../server-state';
+import { getBackupsQueue } from '../queues';
+
+const BACKUP_TIMEOUT_MS = 20 * 60 * 1000;
+
+const createBackupJobSchema = z.object({
+  backupId: z.string().uuid(),
+  serverId: z.string().uuid(),
+  previousStatus: z.enum(['RUNNING', 'STOPPED']),
+});
+
+const restoreBackupJobSchema = z.object({
+  restoreId: z.string().uuid(),
+  serverId: z.string().uuid(),
+  backupId: z.string().uuid(),
+});
+
+const applyWorldUploadJobSchema = z.object({
+  uploadId: z.string().uuid(),
+  serverId: z.string().uuid(),
+});
+
+const retentionJobSchema = z.object({
+  serverId: z.string().uuid(),
+});
+
+interface ArchiveResult {
+  localPath: string;
+  sha256: string;
+  sizeBytes: number;
+  worldName: string;
+}
+
+function getStorage() {
+  const config = loadStorageConfig();
+  return {
+    config,
+    client: createS3Client(config),
+  };
+}
+
+async function loadServer(serverId: string) {
+  const server = await prisma.gameServer.findUnique({
+    where: { id: serverId },
+    include: { backupSchedule: true },
+  });
+
+  if (!server?.nodeId) {
+    throw new Error(`Server ${serverId} is not assigned to a node`);
+  }
+
+  return server;
+}
+
+async function markBackupFailed(
+  backupId: string,
+  reason: string,
+): Promise<void> {
+  await prisma.serverBackup.update({
+    where: { id: backupId },
+    data: {
+      status: 'FAILED',
+      failureReason: reason,
+      completedAt: new Date(),
+    },
+  });
+}
+
+async function runBackupArchive(
+  serverId: string,
+  nodeId: string,
+  backupId: string,
+  worldName: string,
+  generation: number,
+): Promise<ArchiveResult> {
+  const response = await sendAgentRequest(
+    nodeId,
+    'server.world.archive',
+    {
+      serverId,
+      generation,
+      worldName,
+      archiveId: backupId,
+    },
+    BACKUP_TIMEOUT_MS,
+  );
+
+  if (!response.success) {
+    throw new Error(response.errorMessage ?? 'World archive failed');
+  }
+
+  return response.result as ArchiveResult;
+}
+
+async function uploadArchiveToS3(
+  serverId: string,
+  nodeId: string,
+  backupId: string,
+  archive: ArchiveResult,
+  generation: number,
+): Promise<void> {
+  const { config, client } = getStorage();
+  const s3Key = backupObjectKey(serverId, backupId);
+  const uploadUrl = await createPresignedPutUrl(
+    client,
+    config.S3_BUCKET,
+    s3Key,
+    60 * 60,
+  );
+
+  const response = await sendAgentRequest(
+    nodeId,
+    'server.storage.upload',
+    {
+      serverId,
+      generation,
+      localPath: archive.localPath,
+      uploadUrl,
+    },
+    BACKUP_TIMEOUT_MS,
+  );
+
+  if (!response.success) {
+    throw new Error(response.errorMessage ?? 'Backup upload failed');
+  }
+
+  await prisma.serverBackup.update({
+    where: { id: backupId },
+    data: {
+      s3Key,
+      sha256: archive.sha256,
+      sizeBytes: BigInt(archive.sizeBytes),
+    },
+  });
+}
+
+async function enforceRetention(serverId: string, retentionCount: number): Promise<void> {
+  const backups = await prisma.serverBackup.findMany({
+    where: {
+      serverId,
+      status: 'AVAILABLE',
+      type: { in: ['MANUAL', 'SCHEDULED'] },
+    },
+    orderBy: { createdAt: 'desc' },
+  });
+
+  const extras = backups.slice(retentionCount);
+  if (extras.length === 0) {
+    return;
+  }
+
+  const { config, client } = getStorage();
+
+  for (const backup of extras) {
+    if (backup.s3Key) {
+      try {
+        await deleteStoredObject(client, config.S3_BUCKET, backup.s3Key);
+      } catch (error) {
+        logger.warn({ backupId: backup.id, error }, 'Failed to delete S3 backup object');
+      }
+    }
+
+    await prisma.serverBackup.update({
+      where: { id: backup.id },
+      data: { status: 'DELETED' },
+    });
+  }
+}
+
+export async function processCreateBackupJob(job: Job): Promise<{ status: string }> {
+  if (job.name !== 'create-backup') {
+    return { status: 'ignored' };
+  }
+
+  const { backupId, serverId, previousStatus } = createBackupJobSchema.parse(job.data);
+  const server = await loadServer(serverId);
+
+  await prisma.serverBackup.update({
+    where: { id: backupId },
+    data: { status: 'RUNNING' },
+  });
+
+  try {
+    if (previousStatus === 'RUNNING') {
+      const prepare = await sendAgentRequest(
+        server.nodeId!,
+        'server.backup.prepare',
+        { serverId, generation: server.version },
+        BACKUP_TIMEOUT_MS,
+      );
+      if (!prepare.success) {
+        throw new Error(prepare.errorMessage ?? 'Backup prepare failed');
+      }
+    }
+
+    const archive = await runBackupArchive(
+      serverId,
+      server.nodeId!,
+      backupId,
+      server.activeWorldName,
+      server.version,
+    );
+
+    await uploadArchiveToS3(
+      serverId,
+      server.nodeId!,
+      backupId,
+      archive,
+      server.version,
+    );
+
+    if (previousStatus === 'RUNNING') {
+      const release = await sendAgentRequest(
+        server.nodeId!,
+        'server.backup.release',
+        { serverId, generation: server.version },
+        BACKUP_TIMEOUT_MS,
+      );
+      if (!release.success) {
+        throw new Error(release.errorMessage ?? 'Backup release failed');
+      }
+    }
+
+    await prisma.serverBackup.update({
+      where: { id: backupId },
+      data: {
+        status: 'AVAILABLE',
+        completedAt: new Date(),
+      },
+    });
+
+    await transitionServerStatus(serverId, previousStatus, {
+      expectedFrom: 'BACKING_UP',
+      reason: 'Backup completed',
+    });
+
+    const retentionCount = server.backupSchedule?.retentionCount ?? 5;
+    await enforceRetention(serverId, retentionCount);
+
+    return { status: 'available' };
+  } catch (error) {
+    const message = error instanceof Error ? error.message : 'Backup failed';
+    await markBackupFailed(backupId, message);
+
+    try {
+      if (previousStatus === 'RUNNING') {
+        await sendAgentRequest(
+          server.nodeId!,
+          'server.backup.release',
+          { serverId, generation: server.version },
+          60_000,
+        );
+      }
+      await transitionServerStatus(serverId, previousStatus, {
+        expectedFrom: 'BACKING_UP',
+        reason: 'Backup failed',
+        errorMessage: message,
+      });
+    } catch (restoreError) {
+      logger.error({ restoreError, serverId }, 'Failed to restore server status after backup error');
+      await transitionServerStatus(serverId, 'ERROR', {
+        expectedFrom: 'BACKING_UP',
+        reason: 'Backup failed and status recovery failed',
+        errorMessage: message,
+      });
+    }
+
+    throw error;
+  }
+}
+
+export async function processRestoreBackupJob(job: Job): Promise<{ status: string }> {
+  if (job.name !== 'restore-backup') {
+    return { status: 'ignored' };
+  }
+
+  const { restoreId, serverId, backupId } = restoreBackupJobSchema.parse(job.data);
+  const server = await loadServer(serverId);
+  const backup = await prisma.serverBackup.findUniqueOrThrow({
+    where: { id: backupId },
+  });
+
+  if (backup.status !== 'AVAILABLE' || !backup.s3Key) {
+    throw new Error('Backup is not available for restore');
+  }
+
+  await prisma.backupRestore.update({
+    where: { id: restoreId },
+    data: { status: 'RUNNING' },
+  });
+
+  const safetyBackup = await prisma.serverBackup.create({
+    data: {
+      serverId,
+      type: 'PRE_RESTORE',
+      status: 'RUNNING',
+      label: 'Pre-restore safety backup',
+    },
+  });
+
+  await prisma.backupRestore.update({
+    where: { id: restoreId },
+    data: { safetyBackupId: safetyBackup.id },
+  });
+
+  try {
+    const safetyArchive = await runBackupArchive(
+      serverId,
+      server.nodeId!,
+      safetyBackup.id,
+      server.activeWorldName,
+      server.version,
+    );
+    await uploadArchiveToS3(
+      serverId,
+      server.nodeId!,
+      safetyBackup.id,
+      safetyArchive,
+      server.version,
+    );
+    await prisma.serverBackup.update({
+      where: { id: safetyBackup.id },
+      data: {
+        status: 'AVAILABLE',
+        completedAt: new Date(),
+      },
+    });
+  } catch (error) {
+    const message = error instanceof Error ? error.message : 'Safety backup failed';
+    await markBackupFailed(safetyBackup.id, message);
+    throw error;
+  }
+
+  const { config, client } = getStorage();
+  const downloadUrl = await createPresignedGetUrl(
+    client,
+    config.S3_BUCKET,
+    backup.s3Key,
+    60 * 60,
+  );
+  const localArchive = `/var/lib/hgc/servers/${serverId}/.hgc/restore/${restoreId}.tar.gz`;
+
+  try {
+    const download = await sendAgentRequest(
+      server.nodeId!,
+      'server.storage.download',
+      {
+        serverId,
+        generation: server.version,
+        downloadUrl,
+        localPath: localArchive,
+      },
+      BACKUP_TIMEOUT_MS,
+    );
+
+    if (!download.success) {
+      throw new Error(download.errorMessage ?? 'Backup download failed');
+    }
+
+    const replace = await sendAgentRequest(
+      server.nodeId!,
+      'server.world.replace',
+      {
+        serverId,
+        generation: server.version,
+        worldName: server.activeWorldName,
+        archivePath: localArchive,
+      },
+      BACKUP_TIMEOUT_MS,
+    );
+
+    if (!replace.success) {
+      throw new Error(replace.errorMessage ?? 'World replace failed');
+    }
+
+    await prisma.backupRestore.update({
+      where: { id: restoreId },
+      data: {
+        status: 'COMPLETED',
+        completedAt: new Date(),
+      },
+    });
+
+    await transitionServerStatus(serverId, 'STOPPED', {
+      expectedFrom: 'RESTORING',
+      reason: 'Restore completed',
+    });
+
+    return { status: 'completed' };
+  } catch (error) {
+    const message = error instanceof Error ? error.message : 'Restore failed';
+    await prisma.backupRestore.update({
+      where: { id: restoreId },
+      data: {
+        status: 'FAILED',
+        failureReason: message,
+        completedAt: new Date(),
+      },
+    });
+
+    await transitionServerStatus(serverId, 'STOPPED', {
+      expectedFrom: 'RESTORING',
+      reason: 'Restore failed',
+      errorMessage: message,
+    });
+
+    throw error;
+  }
+}
+
+export async function processApplyWorldUploadJob(job: Job): Promise<{ status: string }> {
+  if (job.name !== 'apply-world-upload') {
+    return { status: 'ignored' };
+  }
+
+  const { uploadId, serverId } = applyWorldUploadJobSchema.parse(job.data);
+  const server = await loadServer(serverId);
+  const upload = await prisma.worldUpload.findUniqueOrThrow({
+    where: { id: uploadId },
+  });
+
+  await prisma.worldUpload.update({
+    where: { id: uploadId },
+    data: { status: 'VALIDATING' },
+  });
+
+  const safetyBackup = await prisma.serverBackup.create({
+    data: {
+      serverId,
+      type: 'PRE_WORLD_REPLACE',
+      status: 'RUNNING',
+      label: `Pre-replace backup for upload ${uploadId}`,
+    },
+  });
+
+  try {
+    const safetyArchive = await runBackupArchive(
+      serverId,
+      server.nodeId!,
+      safetyBackup.id,
+      server.activeWorldName,
+      server.version,
+    );
+    await uploadArchiveToS3(
+      serverId,
+      server.nodeId!,
+      safetyBackup.id,
+      safetyArchive,
+      server.version,
+    );
+    await prisma.serverBackup.update({
+      where: { id: safetyBackup.id },
+      data: {
+        status: 'AVAILABLE',
+        completedAt: new Date(),
+      },
+    });
+  } catch (error) {
+    const message = error instanceof Error ? error.message : 'Safety backup failed';
+    await markBackupFailed(safetyBackup.id, message);
+    throw error;
+  }
+
+  const { config, client } = getStorage();
+  const downloadUrl = await createPresignedGetUrl(
+    client,
+    config.S3_BUCKET,
+    upload.s3Key,
+    60 * 60,
+  );
+  const localArchive = `/var/lib/hgc/servers/${serverId}/.hgc/uploads/${uploadId}.tar.gz`;
+
+  try {
+    const download = await sendAgentRequest(
+      server.nodeId!,
+      'server.storage.download',
+      {
+        serverId,
+        generation: server.version,
+        downloadUrl,
+        localPath: localArchive,
+      },
+      BACKUP_TIMEOUT_MS,
+    );
+
+    if (!download.success) {
+      throw new Error(download.errorMessage ?? 'Upload download failed');
+    }
+
+    const replace = await sendAgentRequest(
+      server.nodeId!,
+      'server.world.replace',
+      {
+        serverId,
+        generation: server.version,
+        worldName: upload.worldName,
+        archivePath: localArchive,
+      },
+      BACKUP_TIMEOUT_MS,
+    );
+
+    if (!replace.success) {
+      throw new Error(replace.errorMessage ?? 'World replace failed');
+    }
+
+    await prisma.$transaction([
+      prisma.worldUpload.update({
+        where: { id: uploadId },
+        data: {
+          status: 'COMPLETED',
+          completedAt: new Date(),
+        },
+      }),
+      prisma.gameServer.update({
+        where: { id: serverId },
+        data: { activeWorldName: upload.worldName },
+      }),
+    ]);
+
+    return { status: 'completed' };
+  } catch (error) {
+    const message = error instanceof Error ? error.message : 'World upload apply failed';
+    await prisma.worldUpload.update({
+      where: { id: uploadId },
+      data: {
+        status: 'FAILED',
+        failureReason: message,
+        completedAt: new Date(),
+      },
+    });
+    throw error;
+  }
+}
+
+export async function processRetentionJob(job: Job): Promise<{ status: string }> {
+  if (job.name !== 'enforce-retention') {
+    return { status: 'ignored' };
+  }
+
+  const { serverId } = retentionJobSchema.parse(job.data);
+  const server = await prisma.gameServer.findUnique({
+    where: { id: serverId },
+    include: { backupSchedule: true },
+  });
+
+  if (!server) {
+    return { status: 'ignored' };
+  }
+
+  await enforceRetention(serverId, server.backupSchedule?.retentionCount ?? 5);
+  return { status: 'ok' };
+}
+
+export async function processScheduledBackupsTick(): Promise<void> {
+  const now = new Date();
+  const schedules = await prisma.backupSchedule.findMany({
+    where: {
+      enabled: true,
+      OR: [{ nextRunAt: null }, { nextRunAt: { lte: now } }],
+    },
+  });
+
+  for (const schedule of schedules) {
+    const server = await prisma.gameServer.findUnique({
+      where: { id: schedule.serverId },
+    });
+
+    if (!server?.nodeId || !['RUNNING', 'STOPPED'].includes(server.status)) {
+      continue;
+    }
+
+    const backup = await prisma.serverBackup.create({
+      data: {
+        serverId: schedule.serverId,
+        type: 'SCHEDULED',
+        status: 'PENDING',
+        label: 'Scheduled backup',
+      },
+    });
+
+    await transitionServerStatus(schedule.serverId, 'BACKING_UP', {
+      expectedFrom: server.status as 'RUNNING' | 'STOPPED',
+      reason: 'Scheduled backup started',
+    });
+
+    await getBackupsQueue().add('create-backup', {
+      backupId: backup.id,
+      serverId: schedule.serverId,
+      previousStatus: server.status,
+    });
+
+    const nextRunAt = new Date(now.getTime() + schedule.intervalHours * 60 * 60 * 1000);
+    await prisma.backupSchedule.update({
+      where: { id: schedule.id },
+      data: {
+        lastRunAt: now,
+        nextRunAt,
+      },
+    });
+  }
+}
+
+export async function processBackupJob(job: Job): Promise<{ status: string }> {
+  switch (job.name) {
+    case 'create-backup':
+      return processCreateBackupJob(job);
+    case 'restore-backup':
+      return processRestoreBackupJob(job);
+    case 'apply-world-upload':
+      return processApplyWorldUploadJob(job);
+    case 'enforce-retention':
+      return processRetentionJob(job);
+    default:
+      logger.warn({ jobName: job.name }, 'Unknown backup job');
+      return { status: 'ignored' };
+  }
+}
--- a/apps/worker/src/index.ts
+++ b/apps/worker/src/index.ts
@@ -4,6 +4,7 @@ import { validateConfig } from '@hexahost/config';
 import { prisma } from '@hexahost/database';

 import { processNotificationJob } from './handlers/notifications';
+import { processBackupJob, processScheduledBackupsTick } from './handlers/server-backups';
 import { processLifecycleJob } from './handlers/server-lifecycle';
 import { processProvisionServerJob } from './handlers/server-provisioning';
 import { startHealthServer } from './health';
@@ -11,6 +12,7 @@ import { logger } from './logger';
 import { closeRedisConnections } from './redis';
 import {
  QUEUE_NOTIFICATIONS,
+  QUEUE_SERVER_BACKUPS,
  QUEUE_SERVER_LIFECYCLE,
  QUEUE_SERVER_PROVISIONING,
  WORKER_QUEUES,
@@ -37,6 +39,10 @@ function createQueueWorker(
        return processProvisionServerJob(job);
      }

+      if (queueName === QUEUE_SERVER_BACKUPS) {
+        return processBackupJob(job);
+      }
+
      if (queueName === QUEUE_SERVER_LIFECYCLE) {
        return processLifecycleJob(job);
      }
@@ -75,9 +81,17 @@ async function bootstrap(): Promise<void> {

  logger.info({ queues: WORKER_QUEUES }, 'Worker started');

+  const scheduleTimer = setInterval(() => {
+    void processScheduledBackupsTick().catch((error: Error) => {
+      logger.error({ err: error }, 'Scheduled backup tick failed');
+    });
+  }, 60_000);
+
  const shutdown = async (signal: string): Promise<void> => {
    logger.info({ signal }, 'Shutting down worker');

+    clearInterval(scheduleTimer);
+
    await Promise.all(workers.map((worker) => worker.close()));
    await closeRedisConnections();
    await prisma.$disconnect();
--- a/apps/worker/src/queues.ts
+++ b/apps/worker/src/queues.ts
@@ -1,11 +1,33 @@
+export const QUEUE_SERVER_BACKUPS = 'server-backups' as const;
 export const QUEUE_SERVER_LIFECYCLE = 'server-lifecycle' as const;
 export const QUEUE_SERVER_PROVISIONING = 'server-provisioning' as const;
 export const QUEUE_NOTIFICATIONS = 'notifications' as const;

+import { Queue } from 'bullmq';
+
+import { validateConfig } from '@hexahost/config';
+
 export const WORKER_QUEUES = [
+  QUEUE_SERVER_BACKUPS,
  QUEUE_SERVER_LIFECYCLE,
  QUEUE_SERVER_PROVISIONING,
  QUEUE_NOTIFICATIONS,
 ] as const;

 export type WorkerQueueName = (typeof WORKER_QUEUES)[number];
+
+let backupsQueue: Queue | null = null;
+
+export function getBackupsQueue(): Queue {
+  if (!backupsQueue) {
+    const config = validateConfig();
+    backupsQueue = new Queue(QUEUE_SERVER_BACKUPS, {
+      connection: {
+        url: config.REDIS_URL,
+        maxRetriesPerRequest: null,
+      },
+    });
+  }
+
+  return backupsQueue;
+}
--- a/apps/worker/src/redis.ts
+++ b/apps/worker/src/redis.ts
@@ -21,6 +21,7 @@ export interface NodeCommandMessage {

 export interface NodeResponseMessage {
  success: boolean;
+  result?: unknown;
  resultCode?: string;
  errorCode?: string;
  errorMessage?: string;
--- a/apps/worker/tsconfig.tsbuildinfo
+++ b/apps/worker/tsconfig.tsbuildinfo
--- a/docs/IMPLEMENTATION_STATUS.md
+++ b/docs/IMPLEMENTATION_STATUS.md
@@ -2,92 +2,76 @@

 Last updated: 2026-06-26

-## Current phase: Phase 3 — Console, files, settings ✅
+## Current phase: Phase 4 — Worlds & backups ✅

-### Phase 3 completed
+### Phase 4 completed

 | Area | Status | Notes |
 |------|--------|-------|
-| Go agent v0.3 | Done | Log stream, RCON commands, safe file I/O |
-| `@hexahost/contracts` phase 3 | Done | console, files, properties, players |
-| API NodeBridge | Done | Sync request/response over Redis |
-| API Console | Done | Token + WS `/api/v1/servers/:id/console/ws` |
-| API Files | Done | List, read, write with path validation |
-| API Properties | Done | GET/PATCH `server.properties` |
-| API Players | Done | Online list + whitelist |
-| API Restart | Done | `POST /servers/:id/restart?skip=true` |
-| Audit events | Done | console.command, file.write, properties.update |
-| Web server tabs | Done | Console, files, properties, players |
-| Unit tests | Done | Properties parser, path validation, route contracts |
+| Prisma backup models | Done | ServerBackup, BackupRestore, BackupSchedule, WorldUpload |
+| `@hexahost/storage` | Done | S3/MinIO presigned URLs, object keys |
+| `@hexahost/contracts` phase 4 | Done | backups, worlds schemas |
+| Go agent v0.4 | Done | Archive, validate, RCON prepare/release, S3 transfer |
+| Worker backup queue | Done | create/restore/upload, retention, schedule tick |
+| API BackupsModule | Done | CRUD, restore, schedule, download URL |
+| API WorldsModule | Done | World info, upload, download via backup |
+| Web worlds/backups tabs | Done | Upload, list, backup management |
+| State machine | Done | BACKING_UP, RESTORING |

-### Abnahmekriterium Phase 3
+### Abnahmekriterium Phase 4

- [x] Live console WebSocket (logs + commands when RUNNING)
- [x] File manager (list/read/write, path sandbox)
- [x] `server.properties` editor with restart option
- [x] Player list + whitelist view
- [x] Server management fully via web panel (no direct host access required)
- [ ] Manual E2E validation (requires Docker + agent running locally)
+- [x] World backup to S3 (MinIO in dev)
+- [x] World download (presigned URL)
+- [x] World upload and replace (server stopped)
+- [x] Backup restore with safety backup
+- [x] Retention enforcement
+- [x] Scheduled backups (interval-based)
+- [ ] Manual E2E validation (requires Docker + agent + MinIO)

 ### Local vertical slice

 ```bash
-pnpm dev:infra
-pnpm db:migrate   # or db:push
+pnpm dev:infra   # includes MinIO on :9000
+pnpm db:migrate
 pnpm db:seed
 pnpm dev

-# Terminal 2 — Node Agent (requires Go + Docker)
-cd apps/node-agent
-set NODE_ID=00000000-0000-4000-8000-000000000001
-set NODE_TOKEN=local-dev-enrollment-token-change-me-32chars
-set NODE_AGENT_PUBLIC_URL=ws://localhost:3001/api/v1/nodes/ws
-make run
+# Node Agent (Go + Docker)
+cd apps/node-agent && make run
 ```

-1. Create and start a server under `/servers/new`
-2. Open **Console** tab — live logs, send commands via RCON
-3. Open **Files** — browse server directory, edit files
-4. Open **Properties** — change `server.properties`, optional restart
-5. Open **Players** — online players and whitelist
+1. Stop server → **Welten** → `.tar.gz` hochladen
+2. **Backups** → manuelles Backup erstellen → Download
+3. Backup wiederherstellen (Server gestoppt)
+4. Geplante Backups aktivieren

 ### Known limitations

- Console only when server status is `RUNNING`; files readable when `RUNNING` or `STOPPED`.
- RCON via `rcon-cli` inside Minecraft container (itzg image).
- File writes limited to server data directory; no upload/download archives yet (Phase 4).
- Player management read-only (whitelist view); add/remove deferred.
- Single-node only; no scheduler fairness yet.
+- Upload expects gzip-compressed tar (`.tar.gz`) with world folder or `level.dat` at root.
+- Restore/download require agent on node; worker orchestrates S3 transfer.
+- Scheduled backups use simple `intervalHours` (no cron expressions yet).
+- No server-side encryption of backups beyond MinIO/S3 transport (deferred).
+
+---
+
+## Phase 3 — Console, files, settings ✅
+
+Live console, file manager, `server.properties`, player lists, audit.

 ---

 ## Phase 2 — Single-Node Vertical Slice ✅

-| Area | Status | Notes |
-|------|--------|-------|
-| Prisma lifecycle models | Done | Allocations, server fields, node enrollment |
-| `@hexahost/contracts` servers | Done | Zod schemas for create/list/action |
-| API ServersModule | Done | CRUD, start/stop, BullMQ jobs |
-| API NodesModule | Done | WebSocket `/api/v1/nodes/ws`, Redis command bridge |
-| Worker provisioning | Done | Port allocation, Redis commands, response wait |
-| Go node-agent v0.2 | Done | WebSocket, Docker (`itzg/minecraft-server:java21`) |
-| Web server UI | Done | Create, list, detail, start/stop |
-| Migration | Done | `20260626140000_phase2_game_servers` |
+Provisioning, start/stop, node agent, web panel.

 ---

 ## Phase 1 — Authentication ✅

-Session cookies, register/login/logout, email verify, password reset, TOTP 2FA, recovery codes, audit baseline. See `docs/adr/0002-session-authentication.md`.
-
 ---

 ## Phase 0 — Monorepo foundation ✅

-pnpm + Turborepo monorepo, PostgreSQL/Redis/MinIO/Mailpit compose, CI, ADRs.
+### Next phase: Phase 5 — Software & add-ons

-### Next phase: Phase 4 — Worlds & backups
-
- S3-compatible storage (MinIO)
- World upload/download
- Backup jobs and restore
+- Software catalog, Modrinth, mods/plugins/modpacks
--- a/packages/contracts/src/backups.ts
+++ b/packages/contracts/src/backups.ts
@@ -0,0 +1,102 @@
+import { z } from 'zod';
+
+export const backupStatusSchema = z.enum([
+  'PENDING',
+  'RUNNING',
+  'AVAILABLE',
+  'FAILED',
+  'DELETED',
+]);
+
+export const backupTypeSchema = z.enum([
+  'MANUAL',
+  'SCHEDULED',
+  'PRE_RESTORE',
+  'PRE_WORLD_REPLACE',
+]);
+
+export const backupRestoreStatusSchema = z.enum([
+  'PENDING',
+  'RUNNING',
+  'COMPLETED',
+  'FAILED',
+]);
+
+export const backupResponseSchema = z.object({
+  id: z.string().uuid(),
+  serverId: z.string().uuid(),
+  type: backupTypeSchema,
+  status: backupStatusSchema,
+  s3Key: z.string().nullable(),
+  sizeBytes: z.string().nullable(),
+  sha256: z.string().nullable(),
+  label: z.string().nullable(),
+  failureReason: z.string().nullable(),
+  createdAt: z.string().datetime(),
+  completedAt: z.string().datetime().nullable(),
+  expiresAt: z.string().datetime().nullable(),
+});
+
+export const backupListResponseSchema = z.object({
+  backups: z.array(backupResponseSchema),
+});
+
+export const createBackupRequestSchema = z.object({
+  label: z.string().max(128).optional(),
+});
+
+export const backupActionResponseSchema = z.object({
+  backup: backupResponseSchema,
+  jobId: z.string().optional(),
+});
+
+export const backupDownloadUrlResponseSchema = z.object({
+  downloadUrl: z.string().url(),
+  expiresAt: z.string().datetime(),
+});
+
+export const restoreBackupRequestSchema = z.object({
+  confirm: z.literal(true, {
+    errorMap: () => ({ message: 'Restore must be explicitly confirmed' }),
+  }),
+});
+
+export const backupRestoreResponseSchema = z.object({
+  restore: z.object({
+    id: z.string().uuid(),
+    serverId: z.string().uuid(),
+    backupId: z.string().uuid(),
+    safetyBackupId: z.string().uuid().nullable(),
+    status: backupRestoreStatusSchema,
+    failureReason: z.string().nullable(),
+    createdAt: z.string().datetime(),
+    completedAt: z.string().datetime().nullable(),
+  }),
+  jobId: z.string().optional(),
+});
+
+export const backupScheduleSchema = z.object({
+  enabled: z.boolean(),
+  intervalHours: z.number().int().min(1).max(168),
+  retentionCount: z.number().int().min(1).max(50),
+  nextRunAt: z.string().datetime().nullable(),
+  lastRunAt: z.string().datetime().nullable(),
+});
+
+export const updateBackupScheduleSchema = z.object({
+  enabled: z.boolean().optional(),
+  intervalHours: z.number().int().min(1).max(168).optional(),
+  retentionCount: z.number().int().min(1).max(50).optional(),
+});
+
+export type BackupStatus = z.infer<typeof backupStatusSchema>;
+export type BackupType = z.infer<typeof backupTypeSchema>;
+export type BackupResponse = z.infer<typeof backupResponseSchema>;
+export type BackupListResponse = z.infer<typeof backupListResponseSchema>;
+export type CreateBackupRequest = z.infer<typeof createBackupRequestSchema>;
+export type BackupActionResponse = z.infer<typeof backupActionResponseSchema>;
+export type BackupDownloadUrlResponse = z.infer<typeof backupDownloadUrlResponseSchema>;
+export type RestoreBackupRequest = z.infer<typeof restoreBackupRequestSchema>;
+export type BackupRestoreResponse = z.infer<typeof backupRestoreResponseSchema>;
+export type BackupSchedule = z.infer<typeof backupScheduleSchema>;
+export type UpdateBackupSchedule = z.infer<typeof updateBackupScheduleSchema>;
--- a/packages/contracts/src/index.ts
+++ b/packages/contracts/src/index.ts
@@ -113,3 +113,44 @@ export {
  type OperatorEntry,
  type PlayerListResponse,
 } from './players';
+
+export {
+  backupStatusSchema,
+  backupTypeSchema,
+  backupRestoreStatusSchema,
+  backupResponseSchema,
+  backupListResponseSchema,
+  createBackupRequestSchema,
+  backupActionResponseSchema,
+  backupDownloadUrlResponseSchema,
+  restoreBackupRequestSchema,
+  backupRestoreResponseSchema,
+  backupScheduleSchema,
+  updateBackupScheduleSchema,
+  type BackupStatus,
+  type BackupType,
+  type BackupResponse,
+  type BackupListResponse,
+  type CreateBackupRequest,
+  type BackupActionResponse,
+  type BackupDownloadUrlResponse,
+  type RestoreBackupRequest,
+  type BackupRestoreResponse,
+  type BackupSchedule,
+  type UpdateBackupSchedule,
+} from './backups';
+
+export {
+  worldSummarySchema,
+  worldInfoResponseSchema,
+  initiateWorldUploadSchema,
+  worldUploadInitResponseSchema,
+  worldUploadResponseSchema,
+  worldDownloadUrlResponseSchema,
+  type WorldSummary,
+  type WorldInfoResponse,
+  type InitiateWorldUpload,
+  type WorldUploadInitResponse,
+  type WorldUploadResponse,
+  type WorldDownloadUrlResponse,
+} from './worlds';
--- a/packages/contracts/src/servers.ts
+++ b/packages/contracts/src/servers.ts
@@ -8,6 +8,8 @@ export const gameServerStatusSchema = z.enum([
  'STARTING',
  'RUNNING',
  'STOPPING',
+  'BACKING_UP',
+  'RESTORING',
  'ERROR',
  'DELETING',
  'DELETED',
@@ -53,6 +55,7 @@ export const serverResponseSchema = z.object({
  hostPort: z.number().int().nullable(),
  containerId: z.string().nullable(),
  dataPath: z.string().nullable(),
+  activeWorldName: z.string(),
  ramMb: z.number().int(),
  createdAt: z.string().datetime(),
  updatedAt: z.string().datetime(),
--- a/packages/contracts/src/worlds.ts
+++ b/packages/contracts/src/worlds.ts
@@ -0,0 +1,59 @@
+import { z } from 'zod';
+
+export const worldSummarySchema = z.object({
+  name: z.string(),
+  path: z.string(),
+  sizeBytes: z.string(),
+  hasLevelDat: z.boolean(),
+});
+
+export const worldInfoResponseSchema = z.object({
+  activeWorldName: z.string(),
+  worlds: z.array(worldSummarySchema),
+});
+
+export const initiateWorldUploadSchema = z.object({
+  worldName: z
+    .string()
+    .min(1)
+    .max(64)
+    .regex(/^[a-zA-Z0-9_-]+$/, 'Invalid world name'),
+});
+
+export const worldUploadInitResponseSchema = z.object({
+  uploadId: z.string().uuid(),
+  uploadUrl: z.string().url(),
+  expiresAt: z.string().datetime(),
+  s3Key: z.string(),
+});
+
+export const worldUploadResponseSchema = z.object({
+  id: z.string().uuid(),
+  serverId: z.string().uuid(),
+  status: z.enum([
+    'PENDING',
+    'UPLOADING',
+    'VALIDATING',
+    'READY',
+    'COMPLETED',
+    'FAILED',
+  ]),
+  worldName: z.string(),
+  sizeBytes: z.string().nullable(),
+  failureReason: z.string().nullable(),
+  createdAt: z.string().datetime(),
+  completedAt: z.string().datetime().nullable(),
+});
+
+export const worldDownloadUrlResponseSchema = z.object({
+  downloadUrl: z.string().url(),
+  expiresAt: z.string().datetime(),
+  backupId: z.string().uuid(),
+});
+
+export type WorldSummary = z.infer<typeof worldSummarySchema>;
+export type WorldInfoResponse = z.infer<typeof worldInfoResponseSchema>;
+export type InitiateWorldUpload = z.infer<typeof initiateWorldUploadSchema>;
+export type WorldUploadInitResponse = z.infer<typeof worldUploadInitResponseSchema>;
+export type WorldUploadResponse = z.infer<typeof worldUploadResponseSchema>;
+export type WorldDownloadUrlResponse = z.infer<typeof worldDownloadUrlResponseSchema>;
--- a/packages/contracts/tsconfig.tsbuildinfo
+++ b/packages/contracts/tsconfig.tsbuildinfo
--- a/packages/database/prisma/migrations/20260626160000_phase4_worlds_backups/migration.sql
+++ b/packages/database/prisma/migrations/20260626160000_phase4_worlds_backups/migration.sql
@@ -0,0 +1,99 @@
+-- Phase 4: Worlds & Backups
+
+-- AlterEnum
+ALTER TYPE "GameServerStatus" ADD VALUE 'BACKING_UP';
+ALTER TYPE "GameServerStatus" ADD VALUE 'RESTORING';
+
+-- CreateEnum
+CREATE TYPE "BackupStatus" AS ENUM ('PENDING', 'RUNNING', 'AVAILABLE', 'FAILED', 'DELETED');
+CREATE TYPE "BackupType" AS ENUM ('MANUAL', 'SCHEDULED', 'PRE_RESTORE', 'PRE_WORLD_REPLACE');
+CREATE TYPE "BackupRestoreStatus" AS ENUM ('PENDING', 'RUNNING', 'COMPLETED', 'FAILED');
+CREATE TYPE "WorldUploadStatus" AS ENUM ('PENDING', 'UPLOADING', 'VALIDATING', 'READY', 'COMPLETED', 'FAILED');
+
+-- AlterTable
+ALTER TABLE "game_servers" ADD COLUMN "activeWorldName" TEXT NOT NULL DEFAULT 'world';
+
+-- CreateTable
+CREATE TABLE "server_backups" (
+    "id" TEXT NOT NULL,
+    "serverId" TEXT NOT NULL,
+    "type" "BackupType" NOT NULL DEFAULT 'MANUAL',
+    "status" "BackupStatus" NOT NULL DEFAULT 'PENDING',
+    "s3Key" TEXT,
+    "sizeBytes" BIGINT,
+    "sha256" TEXT,
+    "label" TEXT,
+    "failureReason" TEXT,
+    "createdAt" TIMESTAMPTZ(3) NOT NULL DEFAULT CURRENT_TIMESTAMP,
+    "completedAt" TIMESTAMPTZ(3),
+    "expiresAt" TIMESTAMPTZ(3),
+
+    CONSTRAINT "server_backups_pkey" PRIMARY KEY ("id")
+);
+
+CREATE TABLE "backup_restores" (
+    "id" TEXT NOT NULL,
+    "serverId" TEXT NOT NULL,
+    "backupId" TEXT NOT NULL,
+    "safetyBackupId" TEXT,
+    "status" "BackupRestoreStatus" NOT NULL DEFAULT 'PENDING',
+    "failureReason" TEXT,
+    "createdAt" TIMESTAMPTZ(3) NOT NULL DEFAULT CURRENT_TIMESTAMP,
+    "completedAt" TIMESTAMPTZ(3),
+
+    CONSTRAINT "backup_restores_pkey" PRIMARY KEY ("id")
+);
+
+CREATE TABLE "backup_schedules" (
+    "id" TEXT NOT NULL,
+    "serverId" TEXT NOT NULL,
+    "enabled" BOOLEAN NOT NULL DEFAULT true,
+    "intervalHours" INTEGER NOT NULL DEFAULT 24,
+    "retentionCount" INTEGER NOT NULL DEFAULT 5,
+    "nextRunAt" TIMESTAMPTZ(3),
+    "lastRunAt" TIMESTAMPTZ(3),
+    "createdAt" TIMESTAMPTZ(3) NOT NULL DEFAULT CURRENT_TIMESTAMP,
+    "updatedAt" TIMESTAMPTZ(3) NOT NULL,
+
+    CONSTRAINT "backup_schedules_pkey" PRIMARY KEY ("id")
+);
+
+CREATE TABLE "world_uploads" (
+    "id" TEXT NOT NULL,
+    "serverId" TEXT NOT NULL,
+    "status" "WorldUploadStatus" NOT NULL DEFAULT 'PENDING',
+    "s3Key" TEXT NOT NULL,
+    "worldName" TEXT NOT NULL DEFAULT 'world',
+    "sha256" TEXT,
+    "sizeBytes" BIGINT,
+    "failureReason" TEXT,
+    "createdAt" TIMESTAMPTZ(3) NOT NULL DEFAULT CURRENT_TIMESTAMP,
+    "completedAt" TIMESTAMPTZ(3),
+
+    CONSTRAINT "world_uploads_pkey" PRIMARY KEY ("id")
+);
+
+-- CreateIndex
+CREATE INDEX "server_backups_serverId_idx" ON "server_backups"("serverId");
+CREATE INDEX "server_backups_status_idx" ON "server_backups"("status");
+CREATE INDEX "server_backups_createdAt_idx" ON "server_backups"("createdAt");
+
+CREATE INDEX "backup_restores_serverId_idx" ON "backup_restores"("serverId");
+CREATE INDEX "backup_restores_backupId_idx" ON "backup_restores"("backupId");
+CREATE INDEX "backup_restores_status_idx" ON "backup_restores"("status");
+
+CREATE UNIQUE INDEX "backup_schedules_serverId_key" ON "backup_schedules"("serverId");
+
+CREATE INDEX "world_uploads_serverId_idx" ON "world_uploads"("serverId");
+CREATE INDEX "world_uploads_status_idx" ON "world_uploads"("status");
+
+-- AddForeignKey
+ALTER TABLE "server_backups" ADD CONSTRAINT "server_backups_serverId_fkey" FOREIGN KEY ("serverId") REFERENCES "game_servers"("id") ON DELETE CASCADE ON UPDATE CASCADE;
+
+ALTER TABLE "backup_restores" ADD CONSTRAINT "backup_restores_serverId_fkey" FOREIGN KEY ("serverId") REFERENCES "game_servers"("id") ON DELETE CASCADE ON UPDATE CASCADE;
+ALTER TABLE "backup_restores" ADD CONSTRAINT "backup_restores_backupId_fkey" FOREIGN KEY ("backupId") REFERENCES "server_backups"("id") ON DELETE RESTRICT ON UPDATE CASCADE;
+ALTER TABLE "backup_restores" ADD CONSTRAINT "backup_restores_safetyBackupId_fkey" FOREIGN KEY ("safetyBackupId") REFERENCES "server_backups"("id") ON DELETE SET NULL ON UPDATE CASCADE;
+
+ALTER TABLE "backup_schedules" ADD CONSTRAINT "backup_schedules_serverId_fkey" FOREIGN KEY ("serverId") REFERENCES "game_servers"("id") ON DELETE CASCADE ON UPDATE CASCADE;
+
+ALTER TABLE "world_uploads" ADD CONSTRAINT "world_uploads_serverId_fkey" FOREIGN KEY ("serverId") REFERENCES "game_servers"("id") ON DELETE CASCADE ON UPDATE CASCADE;
--- a/packages/database/prisma/schema.prisma
+++ b/packages/database/prisma/schema.prisma
@@ -37,6 +37,8 @@ enum GameServerStatus {
  STARTING
  RUNNING
  STOPPING
+  BACKING_UP
+  RESTORING
  ERROR
  DELETING
  DELETED
@@ -63,6 +65,37 @@ enum JobStatus {
  CANCELLED
 }

+enum BackupStatus {
+  PENDING
+  RUNNING
+  AVAILABLE
+  FAILED
+  DELETED
+}
+
+enum BackupType {
+  MANUAL
+  SCHEDULED
+  PRE_RESTORE
+  PRE_WORLD_REPLACE
+}
+
+enum BackupRestoreStatus {
+  PENDING
+  RUNNING
+  COMPLETED
+  FAILED
+}
+
+enum WorldUploadStatus {
+  PENDING
+  UPLOADING
+  VALIDATING
+  READY
+  COMPLETED
+  FAILED
+}
+
 model User {
  id                  String     @id @default(uuid())
  email               String     @unique
@@ -219,6 +252,7 @@ model GameServer {
  containerId      String?
  dataPath         String?
  ramMb            Int              @default(1024)
+  activeWorldName  String           @default("world")
  createdAt        DateTime         @default(now()) @db.Timestamptz(3)
  updatedAt        DateTime         @updatedAt @db.Timestamptz(3)

@@ -227,6 +261,10 @@ model GameServer {
  node             GameNode?                   @relation(fields: [nodeId], references: [id])
  stateTransitions GameServerStateTransition[]
  allocation       GameServerAllocation?
+  backups          ServerBackup[]
+  backupRestores   BackupRestore[]
+  backupSchedule   BackupSchedule?
+  worldUploads     WorldUpload[]

  @@index([userId])
  @@index([nodeId])
@@ -385,3 +423,82 @@ model JobRecord {
  @@index([createdAt])
  @@map("job_records")
 }
+
+model ServerBackup {
+  id            String       @id @default(uuid())
+  serverId      String
+  type          BackupType   @default(MANUAL)
+  status        BackupStatus @default(PENDING)
+  s3Key         String?
+  sizeBytes     BigInt?
+  sha256        String?
+  label         String?
+  failureReason String?
+  createdAt     DateTime     @default(now()) @db.Timestamptz(3)
+  completedAt   DateTime?    @db.Timestamptz(3)
+  expiresAt     DateTime?    @db.Timestamptz(3)
+
+  server              GameServer      @relation(fields: [serverId], references: [id], onDelete: Cascade)
+  restores            BackupRestore[] @relation("RestoredFromBackup")
+  safetyForRestores   BackupRestore[] @relation("SafetyBackup")
+
+  @@index([serverId])
+  @@index([status])
+  @@index([createdAt])
+  @@map("server_backups")
+}
+
+model BackupRestore {
+  id             String              @id @default(uuid())
+  serverId       String
+  backupId       String
+  safetyBackupId String?
+  status         BackupRestoreStatus @default(PENDING)
+  failureReason  String?
+  createdAt      DateTime            @default(now()) @db.Timestamptz(3)
+  completedAt    DateTime?           @db.Timestamptz(3)
+
+  server       GameServer    @relation(fields: [serverId], references: [id], onDelete: Cascade)
+  backup       ServerBackup  @relation("RestoredFromBackup", fields: [backupId], references: [id])
+  safetyBackup ServerBackup? @relation("SafetyBackup", fields: [safetyBackupId], references: [id])
+
+  @@index([serverId])
+  @@index([backupId])
+  @@index([status])
+  @@map("backup_restores")
+}
+
+model BackupSchedule {
+  id             String    @id @default(uuid())
+  serverId       String    @unique
+  enabled        Boolean   @default(true)
+  intervalHours  Int       @default(24)
+  retentionCount Int       @default(5)
+  nextRunAt      DateTime? @db.Timestamptz(3)
+  lastRunAt      DateTime? @db.Timestamptz(3)
+  createdAt      DateTime  @default(now()) @db.Timestamptz(3)
+  updatedAt      DateTime  @updatedAt @db.Timestamptz(3)
+
+  server GameServer @relation(fields: [serverId], references: [id], onDelete: Cascade)
+
+  @@map("backup_schedules")
+}
+
+model WorldUpload {
+  id            String            @id @default(uuid())
+  serverId      String
+  status        WorldUploadStatus @default(PENDING)
+  s3Key         String
+  worldName     String            @default("world")
+  sha256        String?
+  sizeBytes     BigInt?
+  failureReason String?
+  createdAt     DateTime          @default(now()) @db.Timestamptz(3)
+  completedAt   DateTime?         @db.Timestamptz(3)
+
+  server GameServer @relation(fields: [serverId], references: [id], onDelete: Cascade)
+
+  @@index([serverId])
+  @@index([status])
+  @@map("world_uploads")
+}
--- a/packages/database/src/index.ts
+++ b/packages/database/src/index.ts
@@ -10,7 +10,12 @@ export type {
  PlatformRole,
  UserPlatformRole,
  GameServer,
+  GameServerAllocation,
  GameServerStateTransition,
+  ServerBackup,
+  BackupRestore,
+  BackupSchedule,
+  WorldUpload,
  GameNode,
  GameNodeHeartbeat,
  Plan,
--- a/packages/database/tsconfig.tsbuildinfo
+++ b/packages/database/tsconfig.tsbuildinfo
--- a/packages/storage/package.json
+++ b/packages/storage/package.json
@@ -0,0 +1,23 @@
+{
+  "name": "@hexahost/storage",
+  "version": "0.0.0",
+  "private": true,
+  "main": "./dist/index.js",
+  "types": "./dist/index.d.ts",
+  "scripts": {
+    "build": "tsc",
+    "typecheck": "tsc --noEmit",
+    "test": "vitest run"
+  },
+  "dependencies": {
+    "@aws-sdk/client-s3": "^3.750.0",
+    "@aws-sdk/s3-request-presigner": "^3.750.0",
+    "zod": "^3.24.1"
+  },
+  "devDependencies": {
+    "@hexahost/typescript-config": "workspace:*",
+    "@types/node": "^22.10.2",
+    "typescript": "^5.7.3",
+    "vitest": "^3.0.8"
+  }
+}
--- a/packages/storage/src/client.ts
+++ b/packages/storage/src/client.ts
@@ -0,0 +1,90 @@
+import {
+  DeleteObjectCommand,
+  HeadObjectCommand,
+  S3Client,
+} from '@aws-sdk/client-s3';
+import { GetObjectCommand, PutObjectCommand } from '@aws-sdk/client-s3';
+import { getSignedUrl } from '@aws-sdk/s3-request-presigner';
+
+import type { StorageConfig } from './config';
+
+export function createS3Client(config: StorageConfig): S3Client {
+  return new S3Client({
+    region: config.S3_REGION,
+    endpoint: config.S3_ENDPOINT,
+    forcePathStyle: config.S3_FORCE_PATH_STYLE,
+    credentials: {
+      accessKeyId: config.S3_ACCESS_KEY,
+      secretAccessKey: config.S3_SECRET_KEY,
+    },
+  });
+}
+
+export function backupObjectKey(serverId: string, backupId: string): string {
+  return `servers/${serverId}/backups/${backupId}.tar.gz`;
+}
+
+export function worldUploadObjectKey(serverId: string, uploadId: string): string {
+  return `servers/${serverId}/uploads/${uploadId}/world.tar.gz`;
+}
+
+export async function createPresignedPutUrl(
+  client: S3Client,
+  bucket: string,
+  key: string,
+  expiresInSeconds: number,
+  contentType = 'application/gzip',
+): Promise<string> {
+  const command = new PutObjectCommand({
+    Bucket: bucket,
+    Key: key,
+    ContentType: contentType,
+  });
+
+  return getSignedUrl(client, command, { expiresIn: expiresInSeconds });
+}
+
+export async function createPresignedGetUrl(
+  client: S3Client,
+  bucket: string,
+  key: string,
+  expiresInSeconds: number,
+): Promise<string> {
+  const command = new GetObjectCommand({
+    Bucket: bucket,
+    Key: key,
+  });
+
+  return getSignedUrl(client, command, { expiresIn: expiresInSeconds });
+}
+
+export async function deleteStoredObject(
+  client: S3Client,
+  bucket: string,
+  key: string,
+): Promise<void> {
+  await client.send(
+    new DeleteObjectCommand({
+      Bucket: bucket,
+      Key: key,
+    }),
+  );
+}
+
+export async function headStoredObject(
+  client: S3Client,
+  bucket: string,
+  key: string,
+): Promise<{ sizeBytes: number; etag?: string }> {
+  const response = await client.send(
+    new HeadObjectCommand({
+      Bucket: bucket,
+      Key: key,
+    }),
+  );
+
+  return {
+    sizeBytes: Number(response.ContentLength ?? 0),
+    etag: response.ETag,
+  };
+}
--- a/packages/storage/src/config.ts
+++ b/packages/storage/src/config.ts
@@ -0,0 +1,28 @@
+import { z } from 'zod';
+
+export const storageConfigSchema = z.object({
+  S3_ENDPOINT: z.string().url(),
+  S3_REGION: z.string().min(1).default('us-east-1'),
+  S3_BUCKET: z.string().min(1),
+  S3_ACCESS_KEY: z.string().min(1),
+  S3_SECRET_KEY: z.string().min(1),
+  S3_FORCE_PATH_STYLE: z
+    .string()
+    .optional()
+    .transform((value) => value === 'true' || value === '1'),
+});
+
+export type StorageConfig = z.infer<typeof storageConfigSchema>;
+
+export function loadStorageConfig(
+  env: Record<string, string | undefined> = process.env,
+): StorageConfig {
+  return storageConfigSchema.parse({
+    S3_ENDPOINT: env['S3_ENDPOINT'],
+    S3_REGION: env['S3_REGION'],
+    S3_BUCKET: env['S3_BUCKET'],
+    S3_ACCESS_KEY: env['S3_ACCESS_KEY'],
+    S3_SECRET_KEY: env['S3_SECRET_KEY'],
+    S3_FORCE_PATH_STYLE: env['S3_FORCE_PATH_STYLE'],
+  });
+}
--- a/packages/storage/src/index.ts
+++ b/packages/storage/src/index.ts
@@ -0,0 +1,15 @@
+export {
+  storageConfigSchema,
+  loadStorageConfig,
+  type StorageConfig,
+} from './config';
+
+export {
+  createS3Client,
+  backupObjectKey,
+  worldUploadObjectKey,
+  createPresignedPutUrl,
+  createPresignedGetUrl,
+  deleteStoredObject,
+  headStoredObject,
+} from './client';
--- a/packages/storage/src/keys.test.ts
+++ b/packages/storage/src/keys.test.ts
@@ -0,0 +1,17 @@
+import { describe, expect, it } from 'vitest';
+
+import { backupObjectKey, worldUploadObjectKey } from './client';
+
+describe('storage object keys', () => {
+  it('builds backup keys', () => {
+    expect(backupObjectKey('srv-1', 'bak-1')).toBe(
+      'servers/srv-1/backups/bak-1.tar.gz',
+    );
+  });
+
+  it('builds world upload keys', () => {
+    expect(worldUploadObjectKey('srv-1', 'up-1')).toBe(
+      'servers/srv-1/uploads/up-1/world.tar.gz',
+    );
+  });
+});
--- a/packages/storage/tsconfig.json
+++ b/packages/storage/tsconfig.json
@@ -0,0 +1,9 @@
+{
+  "extends": "@hexahost/typescript-config/base.json",
+  "compilerOptions": {
+    "outDir": "./dist",
+    "rootDir": "./src"
+  },
+  "include": ["src/**/*"],
+  "exclude": ["node_modules", "dist"]
+}
--- a/Show More
+++ b/Show More
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