feat: Backup & Restore - Manual backup tested complete.

backend/src/features/backup/README.md

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+# Backup Feature
+
+Complete backup and restore system for MotoVaultPro.
+
+## Overview
+
+This feature provides:
+- Manual and scheduled backups of the PostgreSQL database and document files
+- Multiple backup schedules with individual retention policies
+- Restore functionality with safety backup creation
+- Email notifications on backup success/failure
+
+## Architecture
+
+```
+backup/
+  api/                    # HTTP endpoints
+    backup.routes.ts      # Route definitions
+    backup.controller.ts  # Request handlers
+    backup.validation.ts  # Zod schemas
+  domain/                 # Business logic
+    backup.types.ts       # TypeScript types
+    backup.service.ts     # Core backup operations
+    backup-archive.service.ts    # Archive creation
+    backup-restore.service.ts    # Restore operations
+    backup-retention.service.ts  # Retention enforcement
+  data/                   # Data access
+    backup.repository.ts  # Database queries
+  jobs/                   # Scheduled jobs
+    backup-scheduled.job.ts  # Scheduled backup execution
+    backup-cleanup.job.ts    # Retention cleanup
+  migrations/             # Database schema
+    001_create_backup_tables.sql
+```
+
+## API Endpoints
+
+All endpoints require admin authentication.
+
+### Backup Operations
+
+| Method | Path | Description |
+|--------|------|-------------|
+| GET | `/api/admin/backups` | List backups with pagination |
+| POST | `/api/admin/backups` | Create manual backup |
+| GET | `/api/admin/backups/:id` | Get backup details |
+| GET | `/api/admin/backups/:id/download` | Download backup file |
+| DELETE | `/api/admin/backups/:id` | Delete backup |
+| POST | `/api/admin/backups/upload` | Upload backup file |
+
+### Restore Operations
+
+| Method | Path | Description |
+|--------|------|-------------|
+| POST | `/api/admin/backups/:id/restore/preview` | Preview restore |
+| POST | `/api/admin/backups/:id/restore` | Execute restore |
+| GET | `/api/admin/backups/restore/status` | Get restore status |
+
+### Schedule Operations
+
+| Method | Path | Description |
+|--------|------|-------------|
+| GET | `/api/admin/backups/schedules` | List schedules |
+| POST | `/api/admin/backups/schedules` | Create schedule |
+| PUT | `/api/admin/backups/schedules/:id` | Update schedule |
+| DELETE | `/api/admin/backups/schedules/:id` | Delete schedule |
+| PATCH | `/api/admin/backups/schedules/:id/toggle` | Enable/disable |
+
+### Settings
+
+| Method | Path | Description |
+|--------|------|-------------|
+| GET | `/api/admin/backups/settings` | Get settings |
+| PUT | `/api/admin/backups/settings` | Update settings |
+
+## Backup Archive Format
+
+Backups are `.tar.gz` archives containing:
+
+```
+motovaultpro_backup_YYYYMMDD_HHMMSS.tar.gz
+  manifest.json           # Backup metadata
+  database/
+    motovaultpro.sql.gz   # Compressed PostgreSQL dump
+  documents/
+    <user_id>/            # User document files
+```
+
+## Schedule Frequencies
+
+| Frequency | Cron | Default Time |
+|-----------|------|--------------|
+| hourly | `0 * * * *` | Every hour |
+| daily | `0 3 * * *` | 3:00 AM |
+| weekly | `0 3 * * 0` | Sunday 3:00 AM |
+| monthly | `0 3 1 * *` | 1st of month 3:00 AM |
+
+## Database Tables
+
+- `backup_schedules` - Schedule configurations
+- `backup_history` - Backup operation records
+- `backup_settings` - Global settings
+
+## Storage
+
+Backups are stored in `/app/data/backups/` (mapped to `./data/backups/` on host).
+
+## Integration
+
+### Scheduler
+
+Jobs are registered in `backend/src/core/scheduler/index.ts`:
+- Backup check: Every minute
+- Retention cleanup: Daily at 4 AM
+
+### Admin Routes
+
+Routes are registered in `backend/src/features/admin/api/admin.routes.ts`.

backend/src/features/backup/api/backup.controller.ts

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+/**
+ * @ai-summary Controller for backup API endpoints
+ * @ai-context Handles HTTP requests for backup operations
+ */
+
+import { FastifyRequest, FastifyReply } from 'fastify';
+import { Pool } from 'pg';
+import { BackupService } from '../domain/backup.service';
+import { BackupRestoreService } from '../domain/backup-restore.service';
+import {
+  ListBackupsQuery,
+  CreateBackupBody,
+  BackupIdParam,
+  RestoreBody,
+  CreateScheduleBody,
+  UpdateScheduleBody,
+  ScheduleIdParam,
+  UpdateSettingsBody,
+} from './backup.validation';
+
+export class BackupController {
+  private backupService: BackupService;
+  private restoreService: BackupRestoreService;
+
+  constructor(pool: Pool) {
+    this.backupService = new BackupService(pool);
+    this.restoreService = new BackupRestoreService(pool);
+  }
+
+  // ============================================
+  // Backup Operations
+  // ============================================
+
+  async listBackups(
+    request: FastifyRequest<{ Querystring: ListBackupsQuery }>,
+    reply: FastifyReply
+  ): Promise<void> {
+    const result = await this.backupService.listBackups(request.query);
+    reply.send(result);
+  }
+
+  async createBackup(
+    request: FastifyRequest<{ Body: CreateBackupBody }>,
+    reply: FastifyReply
+  ): Promise<void> {
+    const adminSub = (request as any).userContext?.auth0Sub;
+
+    const result = await this.backupService.createBackup({
+      name: request.body.name,
+      backupType: 'manual',
+      createdBy: adminSub,
+      includeDocuments: request.body.includeDocuments,
+    });
+
+    if (result.success) {
+      reply.status(201).send({
+        backupId: result.backupId,
+        status: 'completed',
+        message: 'Backup created successfully',
+      });
+    } else {
+      reply.status(500).send({
+        backupId: result.backupId,
+        status: 'failed',
+        message: result.error,
+      });
+    }
+  }
+
+  async getBackup(
+    request: FastifyRequest<{ Params: BackupIdParam }>,
+    reply: FastifyReply
+  ): Promise<void> {
+    const backup = await this.backupService.getBackup(request.params.id);
+
+    if (!backup) {
+      reply.status(404).send({ error: 'Backup not found' });
+      return;
+    }
+
+    reply.send(backup);
+  }
+
+  async downloadBackup(
+    request: FastifyRequest<{ Params: BackupIdParam }>,
+    reply: FastifyReply
+  ): Promise<void> {
+    const download = await this.backupService.createDownloadStream(request.params.id);
+
+    if (!download) {
+      reply.status(404).send({ error: 'Backup not found or file not available' });
+      return;
+    }
+
+    return reply
+      .header('Content-Type', 'application/gzip')
+      .header('Content-Disposition', `attachment; filename="${download.filename}"`)
+      .header('Content-Length', download.size)
+      .send(download.stream);
+  }
+
+  async deleteBackup(
+    request: FastifyRequest<{ Params: BackupIdParam }>,
+    reply: FastifyReply
+  ): Promise<void> {
+    const deleted = await this.backupService.deleteBackup(request.params.id);
+
+    if (!deleted) {
+      reply.status(404).send({ error: 'Backup not found' });
+      return;
+    }
+
+    reply.status(204).send();
+  }
+
+  async uploadBackup(
+    request: FastifyRequest,
+    reply: FastifyReply
+  ): Promise<void> {
+    const adminSub = (request as any).userContext?.auth0Sub;
+
+    // Handle multipart file upload
+    const data = await request.file();
+    if (!data) {
+      reply.status(400).send({ error: 'No file uploaded' });
+      return;
+    }
+
+    // Validate file type
+    const filename = data.filename;
+    if (!filename.endsWith('.tar.gz') && !filename.endsWith('.tgz')) {
+      reply.status(400).send({ error: 'Invalid file type. Expected .tar.gz archive' });
+      return;
+    }
+
+    // Save file temporarily
+    const fs = await import('fs');
+    const path = await import('path');
+    const os = await import('os');
+
+    const tempPath = path.join(os.tmpdir(), `upload-${Date.now()}-${filename}`);
+    const writeStream = fs.createWriteStream(tempPath);
+
+    await new Promise<void>((resolve, reject) => {
+      data.file.pipe(writeStream);
+      data.file.on('end', resolve);
+      data.file.on('error', reject);
+    });
+
+    try {
+      const backup = await this.backupService.importUploadedBackup(
+        tempPath,
+        filename,
+        adminSub
+      );
+
+      reply.status(201).send({
+        backupId: backup.id,
+        filename: backup.filename,
+        fileSizeBytes: backup.fileSizeBytes,
+        message: 'Backup uploaded successfully',
+      });
+    } catch (error) {
+      // Cleanup temp file on error
+      await fs.promises.unlink(tempPath).catch(() => {});
+      throw error;
+    }
+  }
+
+  // ============================================
+  // Restore Operations
+  // ============================================
+
+  async previewRestore(
+    request: FastifyRequest<{ Params: BackupIdParam }>,
+    reply: FastifyReply
+  ): Promise<void> {
+    try {
+      const preview = await this.restoreService.previewRestore(request.params.id);
+      reply.send(preview);
+    } catch (error) {
+      reply.status(400).send({
+        error: error instanceof Error ? error.message : 'Failed to preview restore',
+      });
+    }
+  }
+
+  async executeRestore(
+    request: FastifyRequest<{ Params: BackupIdParam; Body: RestoreBody }>,
+    reply: FastifyReply
+  ): Promise<void> {
+    try {
+      const result = await this.restoreService.executeRestore({
+        backupId: request.params.id,
+        createSafetyBackup: request.body.createSafetyBackup,
+      });
+
+      if (result.success) {
+        reply.send({
+          success: true,
+          safetyBackupId: result.safetyBackupId,
+          restoredAt: new Date().toISOString(),
+          message: 'Restore completed successfully',
+        });
+      } else {
+        reply.status(500).send({
+          success: false,
+          safetyBackupId: result.safetyBackupId,
+          error: result.error,
+          message: 'Restore failed',
+        });
+      }
+    } catch (error) {
+      reply.status(400).send({
+        success: false,
+        error: error instanceof Error ? error.message : 'Failed to execute restore',
+      });
+    }
+  }
+
+  async getRestoreStatus(
+    _request: FastifyRequest,
+    reply: FastifyReply
+  ): Promise<void> {
+    const status = this.restoreService.getRestoreStatus();
+    reply.send(status);
+  }
+
+  // ============================================
+  // Schedule Operations
+  // ============================================
+
+  async listSchedules(
+    _request: FastifyRequest,
+    reply: FastifyReply
+  ): Promise<void> {
+    const schedules = await this.backupService.listSchedules();
+    reply.send(schedules);
+  }
+
+  async createSchedule(
+    request: FastifyRequest<{ Body: CreateScheduleBody }>,
+    reply: FastifyReply
+  ): Promise<void> {
+    const schedule = await this.backupService.createSchedule(
+      request.body.name,
+      request.body.frequency,
+      request.body.retentionCount,
+      request.body.isEnabled
+    );
+
+    reply.status(201).send(schedule);
+  }
+
+  async updateSchedule(
+    request: FastifyRequest<{ Params: ScheduleIdParam; Body: UpdateScheduleBody }>,
+    reply: FastifyReply
+  ): Promise<void> {
+    const schedule = await this.backupService.updateSchedule(
+      request.params.id,
+      request.body
+    );
+
+    if (!schedule) {
+      reply.status(404).send({ error: 'Schedule not found' });
+      return;
+    }
+
+    reply.send(schedule);
+  }
+
+  async deleteSchedule(
+    request: FastifyRequest<{ Params: ScheduleIdParam }>,
+    reply: FastifyReply
+  ): Promise<void> {
+    const deleted = await this.backupService.deleteSchedule(request.params.id);
+
+    if (!deleted) {
+      reply.status(404).send({ error: 'Schedule not found' });
+      return;
+    }
+
+    reply.status(204).send();
+  }
+
+  async toggleSchedule(
+    request: FastifyRequest<{ Params: ScheduleIdParam }>,
+    reply: FastifyReply
+  ): Promise<void> {
+    const schedule = await this.backupService.toggleSchedule(request.params.id);
+
+    if (!schedule) {
+      reply.status(404).send({ error: 'Schedule not found' });
+      return;
+    }
+
+    reply.send(schedule);
+  }
+
+  // ============================================
+  // Settings Operations
+  // ============================================
+
+  async getSettings(
+    _request: FastifyRequest,
+    reply: FastifyReply
+  ): Promise<void> {
+    const settings = await this.backupService.getSettings();
+    reply.send(settings);
+  }
+
+  async updateSettings(
+    request: FastifyRequest<{ Body: UpdateSettingsBody }>,
+    reply: FastifyReply
+  ): Promise<void> {
+    const settings = await this.backupService.updateSettings(request.body);
+    reply.send(settings);
+  }
+}

backend/src/features/backup/api/backup.routes.ts

@@ -0,0 +1,137 @@
+/**
+ * @ai-summary Route definitions for backup API endpoints
+ * @ai-context All routes require admin authentication via fastify.requireAdmin
+ */
+
+import { FastifyInstance, FastifyPluginOptions } from 'fastify';
+import { Pool } from 'pg';
+import { BackupController } from './backup.controller';
+import {
+  ListBackupsQuery,
+  CreateBackupBody,
+  BackupIdParam,
+  RestoreBody,
+  CreateScheduleBody,
+  UpdateScheduleBody,
+  ScheduleIdParam,
+  UpdateSettingsBody,
+} from './backup.validation';
+
+export async function registerBackupRoutes(
+  fastify: FastifyInstance,
+  opts: FastifyPluginOptions & { pool: Pool }
+): Promise<void> {
+  const controller = new BackupController(opts.pool);
+
+  // ============================================
+  // Backup Operations
+  // ============================================
+
+  // GET /api/admin/backups - List all backups
+  fastify.get<{ Querystring: ListBackupsQuery }>('/admin/backups', {
+    preHandler: [(fastify as any).requireAdmin],
+    handler: controller.listBackups.bind(controller),
+  });
+
+  // POST /api/admin/backups - Create manual backup
+  fastify.post<{ Body: CreateBackupBody }>('/admin/backups', {
+    preHandler: [(fastify as any).requireAdmin],
+    handler: controller.createBackup.bind(controller),
+  });
+
+  // GET /api/admin/backups/:id - Get backup details
+  fastify.get<{ Params: BackupIdParam }>('/admin/backups/:id', {
+    preHandler: [(fastify as any).requireAdmin],
+    handler: controller.getBackup.bind(controller),
+  });
+
+  // GET /api/admin/backups/:id/download - Download backup file
+  fastify.get<{ Params: BackupIdParam }>('/admin/backups/:id/download', {
+    preHandler: [(fastify as any).requireAdmin],
+    handler: controller.downloadBackup.bind(controller),
+  });
+
+  // DELETE /api/admin/backups/:id - Delete backup
+  fastify.delete<{ Params: BackupIdParam }>('/admin/backups/:id', {
+    preHandler: [(fastify as any).requireAdmin],
+    handler: controller.deleteBackup.bind(controller),
+  });
+
+  // POST /api/admin/backups/upload - Upload backup file
+  fastify.post('/admin/backups/upload', {
+    preHandler: [(fastify as any).requireAdmin],
+    handler: controller.uploadBackup.bind(controller),
+  });
+
+  // ============================================
+  // Restore Operations
+  // ============================================
+
+  // POST /api/admin/backups/:id/restore/preview - Preview restore
+  fastify.post<{ Params: BackupIdParam }>('/admin/backups/:id/restore/preview', {
+    preHandler: [(fastify as any).requireAdmin],
+    handler: controller.previewRestore.bind(controller),
+  });
+
+  // POST /api/admin/backups/:id/restore - Execute restore
+  fastify.post<{ Params: BackupIdParam; Body: RestoreBody }>('/admin/backups/:id/restore', {
+    preHandler: [(fastify as any).requireAdmin],
+    handler: controller.executeRestore.bind(controller),
+  });
+
+  // GET /api/admin/backups/restore/status - Get restore status
+  fastify.get('/admin/backups/restore/status', {
+    preHandler: [(fastify as any).requireAdmin],
+    handler: controller.getRestoreStatus.bind(controller),
+  });
+
+  // ============================================
+  // Schedule Operations
+  // ============================================
+
+  // GET /api/admin/backups/schedules - List schedules
+  fastify.get('/admin/backups/schedules', {
+    preHandler: [(fastify as any).requireAdmin],
+    handler: controller.listSchedules.bind(controller),
+  });
+
+  // POST /api/admin/backups/schedules - Create schedule
+  fastify.post<{ Body: CreateScheduleBody }>('/admin/backups/schedules', {
+    preHandler: [(fastify as any).requireAdmin],
+    handler: controller.createSchedule.bind(controller),
+  });
+
+  // PUT /api/admin/backups/schedules/:id - Update schedule
+  fastify.put<{ Params: ScheduleIdParam; Body: UpdateScheduleBody }>('/admin/backups/schedules/:id', {
+    preHandler: [(fastify as any).requireAdmin],
+    handler: controller.updateSchedule.bind(controller),
+  });
+
+  // DELETE /api/admin/backups/schedules/:id - Delete schedule
+  fastify.delete<{ Params: ScheduleIdParam }>('/admin/backups/schedules/:id', {
+    preHandler: [(fastify as any).requireAdmin],
+    handler: controller.deleteSchedule.bind(controller),
+  });
+
+  // PATCH /api/admin/backups/schedules/:id/toggle - Toggle schedule
+  fastify.patch<{ Params: ScheduleIdParam }>('/admin/backups/schedules/:id/toggle', {
+    preHandler: [(fastify as any).requireAdmin],
+    handler: controller.toggleSchedule.bind(controller),
+  });
+
+  // ============================================
+  // Settings Operations
+  // ============================================
+
+  // GET /api/admin/backups/settings - Get settings
+  fastify.get('/admin/backups/settings', {
+    preHandler: [(fastify as any).requireAdmin],
+    handler: controller.getSettings.bind(controller),
+  });
+
+  // PUT /api/admin/backups/settings - Update settings
+  fastify.put<{ Body: UpdateSettingsBody }>('/admin/backups/settings', {
+    preHandler: [(fastify as any).requireAdmin],
+    handler: controller.updateSettings.bind(controller),
+  });
+}

backend/src/features/backup/api/backup.validation.ts

@@ -0,0 +1,83 @@
+/**
+ * @ai-summary Zod validation schemas for backup API endpoints
+ * @ai-context Request validation for backup operations
+ */
+
+import { z } from 'zod';
+
+// ============================================
+// Backup Operations
+// ============================================
+
+export const listBackupsQuerySchema = z.object({
+  page: z.coerce.number().int().positive().optional().default(1),
+  pageSize: z.coerce.number().int().min(1).max(100).optional().default(20),
+  status: z.enum(['in_progress', 'completed', 'failed']).optional(),
+  backupType: z.enum(['scheduled', 'manual']).optional(),
+  sortBy: z.enum(['startedAt', 'fileSizeBytes', 'status']).optional().default('startedAt'),
+  sortOrder: z.enum(['asc', 'desc']).optional().default('desc'),
+});
+
+export const createBackupBodySchema = z.object({
+  name: z.string().min(1).max(100).optional(),
+  includeDocuments: z.boolean().optional().default(true),
+});
+
+export const backupIdParamSchema = z.object({
+  id: z.string().uuid(),
+});
+
+// ============================================
+// Restore Operations
+// ============================================
+
+export const restoreBodySchema = z.object({
+  createSafetyBackup: z.boolean().optional().default(true),
+});
+
+// ============================================
+// Schedule Operations
+// ============================================
+
+export const createScheduleBodySchema = z.object({
+  name: z.string().min(1).max(100),
+  frequency: z.enum(['hourly', 'daily', 'weekly', 'monthly']),
+  retentionCount: z.number().int().min(1).max(365).optional().default(7),
+  isEnabled: z.boolean().optional().default(true),
+});
+
+export const updateScheduleBodySchema = z.object({
+  name: z.string().min(1).max(100).optional(),
+  frequency: z.enum(['hourly', 'daily', 'weekly', 'monthly']).optional(),
+  retentionCount: z.number().int().min(1).max(365).optional(),
+  isEnabled: z.boolean().optional(),
+});
+
+export const scheduleIdParamSchema = z.object({
+  id: z.string().uuid(),
+});
+
+// ============================================
+// Settings Operations
+// ============================================
+
+export const updateSettingsBodySchema = z.object({
+  emailOnSuccess: z.boolean().optional(),
+  emailOnFailure: z.boolean().optional(),
+  adminEmail: z.string().email().or(z.literal('')).optional(),
+  maxBackupSizeMb: z.number().int().min(100).max(10240).optional(),
+  compressionEnabled: z.boolean().optional(),
+});
+
+// ============================================
+// Type Exports
+// ============================================
+
+export type ListBackupsQuery = z.infer<typeof listBackupsQuerySchema>;
+export type CreateBackupBody = z.infer<typeof createBackupBodySchema>;
+export type BackupIdParam = z.infer<typeof backupIdParamSchema>;
+export type RestoreBody = z.infer<typeof restoreBodySchema>;
+export type CreateScheduleBody = z.infer<typeof createScheduleBodySchema>;
+export type UpdateScheduleBody = z.infer<typeof updateScheduleBodySchema>;
+export type ScheduleIdParam = z.infer<typeof scheduleIdParamSchema>;
+export type UpdateSettingsBody = z.infer<typeof updateSettingsBodySchema>;

backend/src/features/backup/data/backup.repository.ts

@@ -0,0 +1,433 @@
+/**
+ * @ai-summary Repository for backup database operations
+ * @ai-context Handles CRUD operations for backup_schedules, backup_history, backup_settings
+ */
+
+import { Pool } from 'pg';
+import {
+  BackupSchedule,
+  BackupHistory,
+  BackupSettingsMap,
+  BackupFrequency,
+  BackupType,
+  BackupStatus,
+  BackupMetadata,
+  ListBackupsParams,
+  CRON_EXPRESSIONS,
+} from '../domain/backup.types';
+
+export class BackupRepository {
+  constructor(private pool: Pool) {}
+
+  // ============================================
+  // Row Mappers (snake_case -> camelCase)
+  // ============================================
+
+  private mapScheduleRow(row: any): BackupSchedule {
+    return {
+      id: row.id,
+      name: row.name,
+      frequency: row.frequency as BackupFrequency,
+      cronExpression: row.cron_expression,
+      retentionCount: row.retention_count,
+      isEnabled: row.is_enabled,
+      lastRunAt: row.last_run_at ? new Date(row.last_run_at) : null,
+      nextRunAt: row.next_run_at ? new Date(row.next_run_at) : null,
+      createdAt: new Date(row.created_at),
+      updatedAt: new Date(row.updated_at),
+    };
+  }
+
+  private mapHistoryRow(row: any): BackupHistory {
+    return {
+      id: row.id,
+      scheduleId: row.schedule_id,
+      backupType: row.backup_type as BackupType,
+      filename: row.filename,
+      filePath: row.file_path,
+      fileSizeBytes: parseInt(row.file_size_bytes, 10),
+      databaseTablesCount: row.database_tables_count,
+      documentsCount: row.documents_count,
+      status: row.status as BackupStatus,
+      errorMessage: row.error_message,
+      startedAt: new Date(row.started_at),
+      completedAt: row.completed_at ? new Date(row.completed_at) : null,
+      createdBy: row.created_by,
+      metadata: row.metadata as BackupMetadata,
+    };
+  }
+
+  // ============================================
+  // Schedule Operations
+  // ============================================
+
+  async listSchedules(): Promise<BackupSchedule[]> {
+    const result = await this.pool.query(
+      `SELECT * FROM backup_schedules ORDER BY created_at ASC`
+    );
+    return result.rows.map(this.mapScheduleRow);
+  }
+
+  async getScheduleById(id: string): Promise<BackupSchedule | null> {
+    const result = await this.pool.query(
+      `SELECT * FROM backup_schedules WHERE id = $1`,
+      [id]
+    );
+    return result.rows.length > 0 ? this.mapScheduleRow(result.rows[0]) : null;
+  }
+
+  async getEnabledSchedulesDue(): Promise<BackupSchedule[]> {
+    const result = await this.pool.query(
+      `SELECT * FROM backup_schedules
+       WHERE is_enabled = true
+       AND (next_run_at IS NULL OR next_run_at <= NOW())
+       ORDER BY next_run_at ASC`
+    );
+    return result.rows.map(this.mapScheduleRow);
+  }
+
+  async createSchedule(
+    name: string,
+    frequency: BackupFrequency,
+    retentionCount: number = 7,
+    isEnabled: boolean = true
+  ): Promise<BackupSchedule> {
+    const cronExpression = CRON_EXPRESSIONS[frequency];
+    const nextRunAt = this.calculateNextRun(frequency);
+
+    const result = await this.pool.query(
+      `INSERT INTO backup_schedules
+       (name, frequency, cron_expression, retention_count, is_enabled, next_run_at)
+       VALUES ($1, $2, $3, $4, $5, $6)
+       RETURNING *`,
+      [name, frequency, cronExpression, retentionCount, isEnabled, nextRunAt]
+    );
+    return this.mapScheduleRow(result.rows[0]);
+  }
+
+  async updateSchedule(
+    id: string,
+    updates: Partial<{
+      name: string;
+      frequency: BackupFrequency;
+      retentionCount: number;
+      isEnabled: boolean;
+    }>
+  ): Promise<BackupSchedule | null> {
+    const setClauses: string[] = [];
+    const values: any[] = [];
+    let paramIndex = 1;
+
+    if (updates.name !== undefined) {
+      setClauses.push(`name = $${paramIndex++}`);
+      values.push(updates.name);
+    }
+    if (updates.frequency !== undefined) {
+      setClauses.push(`frequency = $${paramIndex++}`);
+      values.push(updates.frequency);
+      setClauses.push(`cron_expression = $${paramIndex++}`);
+      values.push(CRON_EXPRESSIONS[updates.frequency]);
+      setClauses.push(`next_run_at = $${paramIndex++}`);
+      values.push(this.calculateNextRun(updates.frequency));
+    }
+    if (updates.retentionCount !== undefined) {
+      setClauses.push(`retention_count = $${paramIndex++}`);
+      values.push(updates.retentionCount);
+    }
+    if (updates.isEnabled !== undefined) {
+      setClauses.push(`is_enabled = $${paramIndex++}`);
+      values.push(updates.isEnabled);
+    }
+
+    if (setClauses.length === 0) {
+      return this.getScheduleById(id);
+    }
+
+    values.push(id);
+    const result = await this.pool.query(
+      `UPDATE backup_schedules SET ${setClauses.join(', ')} WHERE id = $${paramIndex} RETURNING *`,
+      values
+    );
+    return result.rows.length > 0 ? this.mapScheduleRow(result.rows[0]) : null;
+  }
+
+  async deleteSchedule(id: string): Promise<boolean> {
+    const result = await this.pool.query(
+      `DELETE FROM backup_schedules WHERE id = $1`,
+      [id]
+    );
+    return (result.rowCount ?? 0) > 0;
+  }
+
+  async updateScheduleLastRun(id: string, nextRunAt: Date): Promise<void> {
+    await this.pool.query(
+      `UPDATE backup_schedules SET last_run_at = NOW(), next_run_at = $1 WHERE id = $2`,
+      [nextRunAt, id]
+    );
+  }
+
+  // ============================================
+  // History Operations
+  // ============================================
+
+  async listBackups(params: ListBackupsParams): Promise<{
+    items: BackupHistory[];
+    total: number;
+  }> {
+    const page = params.page || 1;
+    const pageSize = params.pageSize || 20;
+    const offset = (page - 1) * pageSize;
+    const sortBy = params.sortBy || 'startedAt';
+    const sortOrder = params.sortOrder || 'desc';
+
+    const sortColumnMap: Record<string, string> = {
+      startedAt: 'started_at',
+      fileSizeBytes: 'file_size_bytes',
+      status: 'status',
+    };
+    const sortColumn = sortColumnMap[sortBy] || 'started_at';
+
+    const whereClauses: string[] = [];
+    const values: any[] = [];
+    let paramIndex = 1;
+
+    if (params.status) {
+      whereClauses.push(`status = $${paramIndex++}`);
+      values.push(params.status);
+    }
+    if (params.backupType) {
+      whereClauses.push(`backup_type = $${paramIndex++}`);
+      values.push(params.backupType);
+    }
+
+    const whereClause = whereClauses.length > 0 ? `WHERE ${whereClauses.join(' AND ')}` : '';
+
+    // Get total count
+    const countResult = await this.pool.query(
+      `SELECT COUNT(*) as total FROM backup_history ${whereClause}`,
+      values
+    );
+    const total = parseInt(countResult.rows[0].total, 10);
+
+    // Get paginated items
+    values.push(pageSize, offset);
+    const result = await this.pool.query(
+      `SELECT * FROM backup_history ${whereClause}
+       ORDER BY ${sortColumn} ${sortOrder.toUpperCase()}
+       LIMIT $${paramIndex++} OFFSET $${paramIndex}`,
+      values
+    );
+
+    return {
+      items: result.rows.map(this.mapHistoryRow),
+      total,
+    };
+  }
+
+  async getBackupById(id: string): Promise<BackupHistory | null> {
+    const result = await this.pool.query(
+      `SELECT * FROM backup_history WHERE id = $1`,
+      [id]
+    );
+    return result.rows.length > 0 ? this.mapHistoryRow(result.rows[0]) : null;
+  }
+
+  async getBackupsBySchedule(scheduleId: string): Promise<BackupHistory[]> {
+    const result = await this.pool.query(
+      `SELECT * FROM backup_history
+       WHERE schedule_id = $1 AND status = 'completed'
+       ORDER BY started_at DESC`,
+      [scheduleId]
+    );
+    return result.rows.map(this.mapHistoryRow);
+  }
+
+  async getLastBackupForSchedule(scheduleId: string): Promise<BackupHistory | null> {
+    const result = await this.pool.query(
+      `SELECT * FROM backup_history
+       WHERE schedule_id = $1
+       ORDER BY started_at DESC
+       LIMIT 1`,
+      [scheduleId]
+    );
+    return result.rows.length > 0 ? this.mapHistoryRow(result.rows[0]) : null;
+  }
+
+  async createBackupRecord(data: {
+    scheduleId?: string | null;
+    backupType: BackupType;
+    filename: string;
+    filePath: string;
+    fileSizeBytes: number;
+    createdBy?: string | null;
+    metadata?: BackupMetadata;
+  }): Promise<BackupHistory> {
+    const result = await this.pool.query(
+      `INSERT INTO backup_history
+       (schedule_id, backup_type, filename, file_path, file_size_bytes, status, created_by, metadata)
+       VALUES ($1, $2, $3, $4, $5, 'in_progress', $6, $7)
+       RETURNING *`,
+      [
+        data.scheduleId || null,
+        data.backupType,
+        data.filename,
+        data.filePath,
+        data.fileSizeBytes,
+        data.createdBy || null,
+        JSON.stringify(data.metadata || {}),
+      ]
+    );
+    return this.mapHistoryRow(result.rows[0]);
+  }
+
+  async completeBackup(
+    id: string,
+    data: {
+      fileSizeBytes: number;
+      databaseTablesCount: number;
+      documentsCount: number;
+      metadata: BackupMetadata;
+    }
+  ): Promise<BackupHistory | null> {
+    const result = await this.pool.query(
+      `UPDATE backup_history SET
+       status = 'completed',
+       file_size_bytes = $1,
+       database_tables_count = $2,
+       documents_count = $3,
+       metadata = $4,
+       completed_at = NOW()
+       WHERE id = $5
+       RETURNING *`,
+      [data.fileSizeBytes, data.databaseTablesCount, data.documentsCount, JSON.stringify(data.metadata), id]
+    );
+    return result.rows.length > 0 ? this.mapHistoryRow(result.rows[0]) : null;
+  }
+
+  async failBackup(id: string, errorMessage: string): Promise<BackupHistory | null> {
+    const result = await this.pool.query(
+      `UPDATE backup_history SET
+       status = 'failed',
+       error_message = $1,
+       completed_at = NOW()
+       WHERE id = $2
+       RETURNING *`,
+      [errorMessage, id]
+    );
+    return result.rows.length > 0 ? this.mapHistoryRow(result.rows[0]) : null;
+  }
+
+  async deleteBackupRecord(id: string): Promise<boolean> {
+    const result = await this.pool.query(
+      `DELETE FROM backup_history WHERE id = $1`,
+      [id]
+    );
+    return (result.rowCount ?? 0) > 0;
+  }
+
+  async getOldestBackupsForSchedule(
+    scheduleId: string,
+    keepCount: number
+  ): Promise<BackupHistory[]> {
+    const result = await this.pool.query(
+      `SELECT * FROM backup_history
+       WHERE schedule_id = $1 AND status = 'completed'
+       ORDER BY started_at DESC
+       OFFSET $2`,
+      [scheduleId, keepCount]
+    );
+    return result.rows.map(this.mapHistoryRow);
+  }
+
+  // ============================================
+  // Settings Operations
+  // ============================================
+
+  async getSettings(): Promise<BackupSettingsMap> {
+    const result = await this.pool.query(
+      `SELECT setting_key, setting_value FROM backup_settings`
+    );
+
+    const settings: BackupSettingsMap = {
+      emailOnSuccess: true,
+      emailOnFailure: true,
+      adminEmail: '',
+      maxBackupSizeMb: 1024,
+      compressionEnabled: true,
+    };
+
+    for (const row of result.rows) {
+      switch (row.setting_key) {
+        case 'email_on_success':
+          settings.emailOnSuccess = row.setting_value === 'true';
+          break;
+        case 'email_on_failure':
+          settings.emailOnFailure = row.setting_value === 'true';
+          break;
+        case 'admin_email':
+          settings.adminEmail = row.setting_value;
+          break;
+        case 'max_backup_size_mb':
+          settings.maxBackupSizeMb = parseInt(row.setting_value, 10);
+          break;
+        case 'compression_enabled':
+          settings.compressionEnabled = row.setting_value === 'true';
+          break;
+      }
+    }
+
+    return settings;
+  }
+
+  async updateSettings(updates: Partial<BackupSettingsMap>): Promise<void> {
+    const keyMap: Record<keyof BackupSettingsMap, string> = {
+      emailOnSuccess: 'email_on_success',
+      emailOnFailure: 'email_on_failure',
+      adminEmail: 'admin_email',
+      maxBackupSizeMb: 'max_backup_size_mb',
+      compressionEnabled: 'compression_enabled',
+    };
+
+    for (const [key, dbKey] of Object.entries(keyMap)) {
+      const value = updates[key as keyof BackupSettingsMap];
+      if (value !== undefined) {
+        await this.pool.query(
+          `UPDATE backup_settings SET setting_value = $1 WHERE setting_key = $2`,
+          [String(value), dbKey]
+        );
+      }
+    }
+  }
+
+  // ============================================
+  // Helper Methods
+  // ============================================
+
+  private calculateNextRun(frequency: BackupFrequency): Date {
+    const now = new Date();
+    const next = new Date(now);
+
+    switch (frequency) {
+      case 'hourly':
+        next.setHours(next.getHours() + 1);
+        next.setMinutes(0, 0, 0);
+        break;
+      case 'daily':
+        next.setDate(next.getDate() + 1);
+        next.setHours(3, 0, 0, 0);
+        break;
+      case 'weekly':
+        const daysUntilSunday = (7 - next.getDay()) % 7 || 7;
+        next.setDate(next.getDate() + daysUntilSunday);
+        next.setHours(3, 0, 0, 0);
+        break;
+      case 'monthly':
+        next.setMonth(next.getMonth() + 1);
+        next.setDate(1);
+        next.setHours(3, 0, 0, 0);
+        break;
+    }
+
+    return next;
+  }
+}

backend/src/features/backup/domain/backup-archive.service.ts

@@ -0,0 +1,411 @@
+/**
+ * @ai-summary Service for creating and extracting backup archives
+ * @ai-context Creates tar.gz archives containing database dump and documents
+ */
+
+import { exec } from 'child_process';
+import { promisify } from 'util';
+import * as fsp from 'fs/promises';
+import * as path from 'path';
+import * as crypto from 'crypto';
+import * as tar from 'tar';
+import { logger } from '../../../core/logging/logger';
+import { appConfig } from '../../../core/config/config-loader';
+import { BACKUP_CONFIG, BackupManifest } from './backup.types';
+
+const execAsync = promisify(exec);
+
+export interface DatabaseExportResult {
+  filename: string;
+  tablesCount: number;
+  sizeBytes: number;
+  checksum: string;
+  postgresqlVersion: string;
+}
+
+export interface DocumentsCopyResult {
+  totalFiles: number;
+  totalSizeBytes: number;
+  usersCount: number;
+}
+
+export interface ArchiveResult {
+  archivePath: string;
+  sizeBytes: number;
+  manifest: BackupManifest;
+}
+
+export class BackupArchiveService {
+  private readonly storagePath: string;
+  private readonly documentsPath: string;
+  private readonly tempPath: string;
+
+  constructor() {
+    this.storagePath = BACKUP_CONFIG.storagePath;
+    this.documentsPath = BACKUP_CONFIG.documentsPath;
+    this.tempPath = BACKUP_CONFIG.tempPath;
+  }
+
+  /**
+   * Creates a complete backup archive
+   */
+  async createArchive(
+    backupId: string,
+    options: {
+      scheduleName?: string;
+      backupType: 'scheduled' | 'manual';
+      includeDocuments?: boolean;
+      createdBy?: string;
+    }
+  ): Promise<ArchiveResult> {
+    const workDir = path.join(this.tempPath, backupId);
+
+    try {
+      // Create working directory
+      await fsp.mkdir(workDir, { recursive: true });
+      await fsp.mkdir(path.join(workDir, 'database'), { recursive: true });
+
+      // Export database
+      logger.info('Exporting database for backup', { backupId });
+      const dbResult = await this.exportDatabase(workDir);
+
+      // Copy documents
+      let docsResult: DocumentsCopyResult = {
+        totalFiles: 0,
+        totalSizeBytes: 0,
+        usersCount: 0,
+      };
+
+      if (options.includeDocuments !== false) {
+        logger.info('Copying documents for backup', { backupId });
+        docsResult = await this.copyDocuments(workDir);
+      }
+
+      // Create manifest
+      const manifest = await this.createManifest(
+        workDir,
+        dbResult,
+        docsResult,
+        options
+      );
+
+      // Create tar.gz archive
+      const timestamp = new Date().toISOString().replace(/[:.]/g, '-').slice(0, 19);
+      const archiveFilename = `motovaultpro_backup_${timestamp}.tar.gz`;
+      const archivePath = path.join(this.storagePath, archiveFilename);
+
+      logger.info('Creating tar.gz archive', { backupId, archivePath });
+      await this.createTarGz(workDir, archivePath);
+
+      const archiveStats = await fsp.stat(archivePath);
+
+      logger.info('Backup archive created successfully', {
+        backupId,
+        archivePath,
+        sizeBytes: archiveStats.size,
+      });
+
+      return {
+        archivePath,
+        sizeBytes: archiveStats.size,
+        manifest,
+      };
+    } finally {
+      // Cleanup working directory
+      await this.cleanupWorkDir(workDir);
+    }
+  }
+
+  /**
+   * Exports the PostgreSQL database to a SQL file
+   * Note: The SQL file is kept uncompressed - tar.gz handles compression
+   */
+  async exportDatabase(workDir: string): Promise<DatabaseExportResult> {
+    const databaseDir = path.join(workDir, 'database');
+    const sqlFilename = 'motovaultpro.sql';
+    const sqlPath = path.join(databaseDir, sqlFilename);
+
+    // Database connection details from app config
+    const dbConfig = appConfig.config.database;
+    const dbPassword = appConfig.secrets.postgres_password;
+    const dbHost = dbConfig.host;
+    const dbPort = dbConfig.port.toString();
+    const dbUser = dbConfig.user;
+    const dbName = dbConfig.name;
+
+    // Set PGPASSWORD environment variable for pg_dump/psql
+    const pgEnv = { ...process.env, PGPASSWORD: dbPassword };
+
+    try {
+      // Get PostgreSQL version
+      const { stdout: versionOutput } = await execAsync(
+        `psql -h ${dbHost} -p ${dbPort} -U ${dbUser} -d ${dbName} -t -c "SELECT version();"`,
+        { env: pgEnv }
+      );
+      const postgresqlVersion = versionOutput.trim().split(' ')[1] || 'unknown';
+
+      // Export database using pg_dump
+      await execAsync(
+        `pg_dump -h ${dbHost} -p ${dbPort} -U ${dbUser} -d ${dbName} --format=plain -f "${sqlPath}"`,
+        { env: pgEnv }
+      );
+
+      // Count tables
+      const { stdout: tablesOutput } = await execAsync(
+        `psql -h ${dbHost} -p ${dbPort} -U ${dbUser} -d ${dbName} -t -c "SELECT COUNT(*) FROM information_schema.tables WHERE table_schema = 'public' AND table_type = 'BASE TABLE';"`,
+        { env: pgEnv }
+      );
+      const tablesCount = parseInt(tablesOutput.trim(), 10) || 0;
+
+      // Calculate checksum of SQL file
+      const sqlContent = await fsp.readFile(sqlPath);
+      const checksum = crypto.createHash('sha256').update(sqlContent).digest('hex');
+
+      const stats = await fsp.stat(sqlPath);
+
+      return {
+        filename: sqlFilename,
+        tablesCount,
+        sizeBytes: stats.size,
+        checksum: `sha256:${checksum}`,
+        postgresqlVersion,
+      };
+    } catch (error) {
+      logger.error('Database export failed', {
+        error: error instanceof Error ? error.message : String(error),
+      });
+      throw new Error(`Database export failed: ${error instanceof Error ? error.message : String(error)}`);
+    }
+  }
+
+  /**
+   * Copies document files to the backup working directory
+   */
+  async copyDocuments(workDir: string): Promise<DocumentsCopyResult> {
+    const docsDir = path.join(workDir, 'documents');
+    await fsp.mkdir(docsDir, { recursive: true });
+
+    let totalFiles = 0;
+    let totalSizeBytes = 0;
+    const userDirs = new Set<string>();
+
+    try {
+      // Check if documents directory exists
+      const documentsExists = await fsp.access(this.documentsPath).then(() => true).catch(() => false);
+
+      if (!documentsExists) {
+        logger.info('Documents directory does not exist, skipping document backup');
+        return { totalFiles: 0, totalSizeBytes: 0, usersCount: 0 };
+      }
+
+      // Recursively copy documents
+      await this.copyDirRecursive(this.documentsPath, docsDir, {
+        onFile: async (srcPath, _destPath) => {
+          const stats = await fsp.stat(srcPath);
+          totalFiles++;
+          totalSizeBytes += stats.size;
+
+          // Track unique user directories
+          const relativePath = path.relative(this.documentsPath, srcPath);
+          const userId = relativePath.split(path.sep)[0];
+          if (userId) {
+            userDirs.add(userId);
+          }
+        },
+      });
+
+      return {
+        totalFiles,
+        totalSizeBytes,
+        usersCount: userDirs.size,
+      };
+    } catch (error) {
+      logger.error('Documents copy failed', {
+        error: error instanceof Error ? error.message : String(error),
+      });
+      throw new Error(`Documents copy failed: ${error instanceof Error ? error.message : String(error)}`);
+    }
+  }
+
+  /**
+   * Creates the backup manifest file
+   */
+  async createManifest(
+    workDir: string,
+    dbResult: DatabaseExportResult,
+    docsResult: DocumentsCopyResult,
+    options: {
+      scheduleName?: string;
+      backupType: 'scheduled' | 'manual';
+      createdBy?: string;
+    }
+  ): Promise<BackupManifest> {
+    const manifest: BackupManifest = {
+      version: BACKUP_CONFIG.archiveVersion,
+      createdAt: new Date().toISOString(),
+      applicationVersion: process.env.npm_package_version || '1.0.0',
+      backupType: options.backupType,
+      scheduleName: options.scheduleName || null,
+      contents: {
+        database: {
+          filename: dbResult.filename,
+          tablesCount: dbResult.tablesCount,
+          postgresqlVersion: dbResult.postgresqlVersion,
+          sizeBytes: dbResult.sizeBytes,
+          checksum: dbResult.checksum,
+        },
+        documents: {
+          totalFiles: docsResult.totalFiles,
+          totalSizeBytes: docsResult.totalSizeBytes,
+          usersCount: docsResult.usersCount,
+        },
+      },
+      metadata: {
+        hostname: process.env.HOSTNAME || 'mvp-backend',
+        createdBy: options.createdBy || 'system',
+        compression: 'gzip',
+        postgresqlVersion: dbResult.postgresqlVersion,
+      },
+    };
+
+    const manifestPath = path.join(workDir, 'manifest.json');
+    await fsp.writeFile(manifestPath, JSON.stringify(manifest, null, 2));
+
+    return manifest;
+  }
+
+  /**
+   * Creates a tar.gz archive from the working directory
+   */
+  async createTarGz(sourceDir: string, destPath: string): Promise<void> {
+    // Ensure destination directory exists
+    await fsp.mkdir(path.dirname(destPath), { recursive: true });
+
+    // Create tar.gz using the tar package
+    await tar.create(
+      {
+        gzip: true,
+        file: destPath,
+        cwd: sourceDir,
+      },
+      ['.']
+    );
+  }
+
+  /**
+   * Extracts a backup archive to a working directory
+   */
+  async extractArchive(archivePath: string, workDir: string): Promise<BackupManifest> {
+    await fsp.mkdir(workDir, { recursive: true });
+
+    // Extract tar.gz
+    await tar.extract({
+      file: archivePath,
+      cwd: workDir,
+    });
+
+    // Read and validate manifest
+    const manifestPath = path.join(workDir, 'manifest.json');
+    const manifestContent = await fsp.readFile(manifestPath, 'utf-8');
+    const manifest = JSON.parse(manifestContent) as BackupManifest;
+
+    // Validate manifest version
+    if (!manifest.version) {
+      throw new Error('Invalid backup manifest: missing version');
+    }
+
+    return manifest;
+  }
+
+  /**
+   * Validates an archive file without fully extracting it
+   */
+  async validateArchive(archivePath: string): Promise<{
+    valid: boolean;
+    manifest?: BackupManifest;
+    error?: string;
+  }> {
+    const tempDir = path.join(this.tempPath, `validate-${Date.now()}`);
+
+    try {
+      const manifest = await this.extractArchive(archivePath, tempDir);
+
+      // Verify required files exist
+      const dbPath = path.join(tempDir, 'database', manifest.contents.database.filename);
+      await fsp.access(dbPath);
+
+      return { valid: true, manifest };
+    } catch (error) {
+      return {
+        valid: false,
+        error: error instanceof Error ? error.message : String(error),
+      };
+    } finally {
+      await this.cleanupWorkDir(tempDir);
+    }
+  }
+
+  /**
+   * Gets the manifest from an archive without extracting it fully
+   */
+  async getManifestFromArchive(archivePath: string): Promise<BackupManifest> {
+    const tempDir = path.join(this.tempPath, `manifest-${Date.now()}`);
+
+    try {
+      // Extract only manifest.json
+      await tar.extract({
+        file: archivePath,
+        cwd: tempDir,
+        filter: (p) => p === 'manifest.json' || p === './manifest.json',
+      });
+
+      const manifestPath = path.join(tempDir, 'manifest.json');
+      const manifestContent = await fsp.readFile(manifestPath, 'utf-8');
+      return JSON.parse(manifestContent) as BackupManifest;
+    } finally {
+      await this.cleanupWorkDir(tempDir);
+    }
+  }
+
+  /**
+   * Recursively copies a directory
+   */
+  private async copyDirRecursive(
+    src: string,
+    dest: string,
+    options?: {
+      onFile?: (srcPath: string, destPath: string) => Promise<void>;
+    }
+  ): Promise<void> {
+    const entries = await fsp.readdir(src, { withFileTypes: true });
+
+    for (const entry of entries) {
+      const srcPath = path.join(src, entry.name);
+      const destPath = path.join(dest, entry.name);
+
+      if (entry.isDirectory()) {
+        await fsp.mkdir(destPath, { recursive: true });
+        await this.copyDirRecursive(srcPath, destPath, options);
+      } else {
+        await fsp.copyFile(srcPath, destPath);
+        if (options?.onFile) {
+          await options.onFile(srcPath, destPath);
+        }
+      }
+    }
+  }
+
+  /**
+   * Cleans up a working directory
+   */
+  private async cleanupWorkDir(workDir: string): Promise<void> {
+    try {
+      await fsp.rm(workDir, { recursive: true, force: true });
+    } catch (error) {
+      logger.warn('Failed to cleanup work directory', {
+        workDir,
+        error: error instanceof Error ? error.message : String(error),
+      });
+    }
+  }
+}

backend/src/features/backup/domain/backup-restore.service.ts

@@ -0,0 +1,306 @@
+/**
+ * @ai-summary Service for restoring backups
+ * @ai-context Handles preview and execution of backup restoration with safety backup
+ */
+
+import { exec } from 'child_process';
+import { promisify } from 'util';
+import * as fsp from 'fs/promises';
+import * as path from 'path';
+import * as crypto from 'crypto';
+import { Pool } from 'pg';
+import { logger } from '../../../core/logging/logger';
+import { appConfig } from '../../../core/config/config-loader';
+import { BackupRepository } from '../data/backup.repository';
+import { BackupArchiveService } from './backup-archive.service';
+import { BackupService } from './backup.service';
+import {
+  BACKUP_CONFIG,
+  BackupManifest,
+  RestoreOptions,
+  RestoreResult,
+  RestorePreviewResponse,
+} from './backup.types';
+
+const execAsync = promisify(exec);
+
+export class BackupRestoreService {
+  private repository: BackupRepository;
+  private archiveService: BackupArchiveService;
+  private backupService: BackupService;
+  private restoreInProgress: boolean = false;
+
+  constructor(pool: Pool) {
+    this.repository = new BackupRepository(pool);
+    this.archiveService = new BackupArchiveService();
+    this.backupService = new BackupService(pool);
+  }
+
+  /**
+   * Previews what will be restored (dry run)
+   */
+  async previewRestore(backupId: string): Promise<RestorePreviewResponse> {
+    const backup = await this.repository.getBackupById(backupId);
+    if (!backup) {
+      throw new Error('Backup not found');
+    }
+
+    if (backup.status !== 'completed') {
+      throw new Error('Cannot restore from incomplete backup');
+    }
+
+    const filePath = (backup.metadata as any)?.archivePath || backup.filePath;
+    if (!filePath) {
+      throw new Error('Backup file path not found');
+    }
+
+    // Validate archive and get manifest
+    const validation = await this.archiveService.validateArchive(filePath);
+    if (!validation.valid) {
+      throw new Error(`Invalid backup archive: ${validation.error}`);
+    }
+
+    const manifest = validation.manifest!;
+    const warnings: string[] = [];
+
+    // Check for potential issues
+    if (manifest.version !== BACKUP_CONFIG.archiveVersion) {
+      warnings.push(`Backup version (${manifest.version}) differs from current (${BACKUP_CONFIG.archiveVersion})`);
+    }
+
+    // Estimate duration based on file sizes
+    const totalBytes = backup.fileSizeBytes;
+    const estimatedSeconds = Math.max(30, Math.ceil(totalBytes / (10 * 1024 * 1024))); // ~10MB/s
+    const estimatedDuration = this.formatDuration(estimatedSeconds);
+
+    return {
+      backupId,
+      manifest,
+      warnings,
+      estimatedDuration,
+    };
+  }
+
+  /**
+   * Executes a backup restoration
+   */
+  async executeRestore(options: RestoreOptions): Promise<RestoreResult> {
+    if (this.restoreInProgress) {
+      throw new Error('A restore operation is already in progress');
+    }
+
+    this.restoreInProgress = true;
+    let safetyBackupId: string | undefined;
+
+    try {
+      const backup = await this.repository.getBackupById(options.backupId);
+      if (!backup) {
+        throw new Error('Backup not found');
+      }
+
+      if (backup.status !== 'completed') {
+        throw new Error('Cannot restore from incomplete backup');
+      }
+
+      const filePath = (backup.metadata as any)?.archivePath || backup.filePath;
+      if (!filePath) {
+        throw new Error('Backup file path not found');
+      }
+
+      logger.info('Starting restore operation', {
+        backupId: options.backupId,
+        createSafetyBackup: options.createSafetyBackup,
+      });
+
+      // Create safety backup before restore
+      if (options.createSafetyBackup !== false) {
+        logger.info('Creating safety backup before restore');
+        const safetyResult = await this.backupService.createBackup({
+          name: `Pre-restore safety backup`,
+          backupType: 'manual',
+          includeDocuments: true,
+        });
+
+        if (!safetyResult.success) {
+          throw new Error(`Failed to create safety backup: ${safetyResult.error}`);
+        }
+
+        safetyBackupId = safetyResult.backupId;
+        logger.info('Safety backup created', { safetyBackupId });
+      }
+
+      // Extract archive to temp directory
+      const workDir = path.join(BACKUP_CONFIG.tempPath, `restore-${options.backupId}`);
+      await fsp.mkdir(workDir, { recursive: true });
+
+      try {
+        logger.info('Extracting backup archive');
+        const manifest = await this.archiveService.extractArchive(filePath, workDir);
+
+        // Restore database
+        logger.info('Restoring database');
+        await this.restoreDatabase(workDir, manifest);
+
+        // Restore documents
+        logger.info('Restoring documents');
+        await this.restoreDocuments(workDir, manifest);
+
+        logger.info('Restore completed successfully', {
+          backupId: options.backupId,
+          safetyBackupId,
+        });
+
+        return {
+          success: true,
+          safetyBackupId,
+        };
+      } finally {
+        // Cleanup work directory
+        await fsp.rm(workDir, { recursive: true, force: true }).catch(() => {});
+      }
+    } catch (error) {
+      const errorMessage = error instanceof Error ? error.message : String(error);
+
+      logger.error('Restore failed', {
+        backupId: options.backupId,
+        error: errorMessage,
+        safetyBackupId,
+      });
+
+      return {
+        success: false,
+        safetyBackupId,
+        error: errorMessage,
+      };
+    } finally {
+      this.restoreInProgress = false;
+    }
+  }
+
+  /**
+   * Gets the current restore status
+   */
+  getRestoreStatus(): { inProgress: boolean } {
+    return { inProgress: this.restoreInProgress };
+  }
+
+  /**
+   * Restores the database from a backup
+   */
+  private async restoreDatabase(workDir: string, manifest: BackupManifest): Promise<void> {
+    const dbFilename = manifest.contents.database.filename;
+    const sqlPath = path.join(workDir, 'database', dbFilename);
+
+    // Verify the SQL file exists
+    await fsp.access(sqlPath);
+
+    // Verify checksum
+    const sqlContent = await fsp.readFile(sqlPath);
+    const actualChecksum = `sha256:${crypto.createHash('sha256').update(sqlContent).digest('hex')}`;
+
+    if (actualChecksum !== manifest.contents.database.checksum) {
+      throw new Error('Database checksum mismatch - backup may be corrupted');
+    }
+
+    // Database connection details from app config
+    const dbConfig = appConfig.config.database;
+    const dbPassword = appConfig.secrets.postgres_password;
+    const dbHost = dbConfig.host;
+    const dbPort = dbConfig.port.toString();
+    const dbUser = dbConfig.user;
+    const dbName = dbConfig.name;
+
+    // Set PGPASSWORD environment variable for psql
+    const pgEnv = { ...process.env, PGPASSWORD: dbPassword };
+
+    try {
+      // Drop existing connections (except our own)
+      await execAsync(
+        `psql -h ${dbHost} -p ${dbPort} -U ${dbUser} -d postgres -c "SELECT pg_terminate_backend(pid) FROM pg_stat_activity WHERE datname = '${dbName}' AND pid <> pg_backend_pid();"`,
+        { env: pgEnv }
+      );
+
+      // Restore the database using psql
+      await execAsync(
+        `psql -h ${dbHost} -p ${dbPort} -U ${dbUser} -d ${dbName} -f "${sqlPath}"`,
+        { env: pgEnv }
+      );
+
+      logger.info('Database restored successfully', {
+        tablesCount: manifest.contents.database.tablesCount,
+      });
+    } catch (error) {
+      throw new Error(`Database restoration failed: ${error instanceof Error ? error.message : String(error)}`);
+    }
+  }
+
+  /**
+   * Restores documents from a backup
+   */
+  private async restoreDocuments(workDir: string, manifest: BackupManifest): Promise<void> {
+    const docsBackupPath = path.join(workDir, 'documents');
+    const docsTargetPath = BACKUP_CONFIG.documentsPath;
+
+    // Check if documents were included in backup
+    const docsExist = await fsp.access(docsBackupPath).then(() => true).catch(() => false);
+    if (!docsExist || manifest.contents.documents.totalFiles === 0) {
+      logger.info('No documents to restore');
+      return;
+    }
+
+    try {
+      // Ensure target directory exists
+      await fsp.mkdir(docsTargetPath, { recursive: true });
+
+      // Clear existing documents (we're doing a full restore)
+      const existingEntries = await fsp.readdir(docsTargetPath);
+      for (const entry of existingEntries) {
+        await fsp.rm(path.join(docsTargetPath, entry), { recursive: true, force: true });
+      }
+
+      // Copy documents from backup
+      await this.copyDirRecursive(docsBackupPath, docsTargetPath);
+
+      logger.info('Documents restored successfully', {
+        totalFiles: manifest.contents.documents.totalFiles,
+        usersCount: manifest.contents.documents.usersCount,
+      });
+    } catch (error) {
+      throw new Error(`Documents restoration failed: ${error instanceof Error ? error.message : String(error)}`);
+    }
+  }
+
+  /**
+   * Recursively copies a directory
+   */
+  private async copyDirRecursive(src: string, dest: string): Promise<void> {
+    const entries = await fsp.readdir(src, { withFileTypes: true });
+
+    for (const entry of entries) {
+      const srcPath = path.join(src, entry.name);
+      const destPath = path.join(dest, entry.name);
+
+      if (entry.isDirectory()) {
+        await fsp.mkdir(destPath, { recursive: true });
+        await this.copyDirRecursive(srcPath, destPath);
+      } else {
+        await fsp.copyFile(srcPath, destPath);
+      }
+    }
+  }
+
+  /**
+   * Formats duration in human-readable format
+   */
+  private formatDuration(seconds: number): string {
+    if (seconds < 60) {
+      return `${seconds} seconds`;
+    }
+    const minutes = Math.floor(seconds / 60);
+    const remainingSeconds = seconds % 60;
+    if (remainingSeconds === 0) {
+      return `${minutes} minute${minutes > 1 ? 's' : ''}`;
+    }
+    return `${minutes} minute${minutes > 1 ? 's' : ''} ${remainingSeconds} seconds`;
+  }
+}

backend/src/features/backup/domain/backup-retention.service.ts

@@ -0,0 +1,274 @@
+/**
+ * @ai-summary Service for enforcing backup retention policies
+ * @ai-context Deletes old backups based on schedule retention counts
+ */
+
+import * as fsp from 'fs/promises';
+import { Pool } from 'pg';
+import { logger } from '../../../core/logging/logger';
+import { BackupRepository } from '../data/backup.repository';
+import {
+  RetentionCleanupResult,
+  RetentionCleanupJobResult,
+} from './backup.types';
+
+export class BackupRetentionService {
+  private repository: BackupRepository;
+
+  constructor(pool: Pool) {
+    this.repository = new BackupRepository(pool);
+  }
+
+  /**
+   * Processes retention cleanup for all schedules
+   */
+  async processRetentionCleanup(): Promise<RetentionCleanupJobResult> {
+    logger.info('Starting backup retention cleanup');
+
+    const schedules = await this.repository.listSchedules();
+    const results: RetentionCleanupResult[] = [];
+    const errors: Array<{ scheduleId: string; error: string }> = [];
+    let totalDeleted = 0;
+    let totalFreedBytes = 0;
+
+    for (const schedule of schedules) {
+      try {
+        const result = await this.cleanupScheduleBackups(
+          schedule.id,
+          schedule.name,
+          schedule.retentionCount
+        );
+        results.push(result);
+        totalDeleted += result.deletedCount;
+        totalFreedBytes += result.freedBytes;
+      } catch (error) {
+        const errorMessage = error instanceof Error ? error.message : String(error);
+        logger.error('Retention cleanup failed for schedule', {
+          scheduleId: schedule.id,
+          scheduleName: schedule.name,
+          error: errorMessage,
+        });
+        errors.push({ scheduleId: schedule.id, error: errorMessage });
+      }
+    }
+
+    // Also cleanup orphaned backups (from deleted schedules)
+    try {
+      const orphanResult = await this.cleanupOrphanedBackups();
+      if (orphanResult.deletedCount > 0) {
+        results.push(orphanResult);
+        totalDeleted += orphanResult.deletedCount;
+        totalFreedBytes += orphanResult.freedBytes;
+      }
+    } catch (error) {
+      const errorMessage = error instanceof Error ? error.message : String(error);
+      logger.error('Orphaned backup cleanup failed', { error: errorMessage });
+      errors.push({ scheduleId: 'orphaned', error: errorMessage });
+    }
+
+    logger.info('Backup retention cleanup completed', {
+      processed: schedules.length,
+      totalDeleted,
+      totalFreedBytes,
+      errors: errors.length,
+    });
+
+    return {
+      processed: schedules.length,
+      totalDeleted,
+      totalFreedBytes,
+      results,
+      errors,
+    };
+  }
+
+  /**
+   * Cleans up old backups for a specific schedule
+   */
+  async cleanupScheduleBackups(
+    scheduleId: string,
+    scheduleName: string,
+    retentionCount: number
+  ): Promise<RetentionCleanupResult> {
+    logger.debug('Processing retention for schedule', {
+      scheduleId,
+      scheduleName,
+      retentionCount,
+    });
+
+    // Get backups that exceed retention count
+    const backupsToDelete = await this.repository.getOldestBackupsForSchedule(
+      scheduleId,
+      retentionCount
+    );
+
+    let deletedCount = 0;
+    let freedBytes = 0;
+    const completedBackups = await this.repository.getBackupsBySchedule(scheduleId);
+    const retainedCount = Math.min(completedBackups.length, retentionCount);
+
+    for (const backup of backupsToDelete) {
+      try {
+        // Delete the file
+        const filePath = (backup.metadata as any)?.archivePath || backup.filePath;
+        if (filePath) {
+          try {
+            const stats = await fsp.stat(filePath);
+            freedBytes += stats.size;
+            await fsp.unlink(filePath);
+          } catch (error) {
+            // File might not exist, continue
+            logger.warn('Failed to delete backup file during retention cleanup', {
+              backupId: backup.id,
+              filePath,
+            });
+          }
+        }
+
+        // Delete the database record
+        await this.repository.deleteBackupRecord(backup.id);
+        deletedCount++;
+
+        logger.debug('Deleted old backup during retention cleanup', {
+          backupId: backup.id,
+          scheduleId,
+          startedAt: backup.startedAt,
+        });
+      } catch (error) {
+        logger.error('Failed to delete backup during retention cleanup', {
+          backupId: backup.id,
+          error: error instanceof Error ? error.message : String(error),
+        });
+      }
+    }
+
+    if (deletedCount > 0) {
+      logger.info('Retention cleanup completed for schedule', {
+        scheduleId,
+        scheduleName,
+        deletedCount,
+        retainedCount,
+        freedBytes,
+      });
+    }
+
+    return {
+      scheduleId,
+      scheduleName,
+      deletedCount,
+      retainedCount,
+      freedBytes,
+    };
+  }
+
+  /**
+   * Cleans up failed/incomplete backups older than 24 hours
+   */
+  async cleanupFailedBackups(): Promise<number> {
+    const { items } = await this.repository.listBackups({
+      status: 'failed',
+      pageSize: 100,
+    });
+
+    const oneDayAgo = new Date(Date.now() - 24 * 60 * 60 * 1000);
+    let deletedCount = 0;
+
+    for (const backup of items) {
+      if (backup.startedAt < oneDayAgo) {
+        try {
+          // Try to delete file if it exists
+          const filePath = (backup.metadata as any)?.archivePath || backup.filePath;
+          if (filePath) {
+            await fsp.unlink(filePath).catch(() => {});
+          }
+
+          await this.repository.deleteBackupRecord(backup.id);
+          deletedCount++;
+        } catch (error) {
+          logger.warn('Failed to cleanup failed backup', {
+            backupId: backup.id,
+            error: error instanceof Error ? error.message : String(error),
+          });
+        }
+      }
+    }
+
+    if (deletedCount > 0) {
+      logger.info('Cleaned up failed backups', { deletedCount });
+    }
+
+    return deletedCount;
+  }
+
+  /**
+   * Cleans up orphaned backups (from deleted schedules)
+   * Keeps manual backups indefinitely
+   */
+  private async cleanupOrphanedBackups(): Promise<RetentionCleanupResult> {
+    const { items } = await this.repository.listBackups({
+      backupType: 'scheduled',
+      pageSize: 1000,
+    });
+
+    // Get all valid schedule IDs
+    const schedules = await this.repository.listSchedules();
+    const validScheduleIds = new Set(schedules.map(s => s.id));
+
+    // Find orphaned scheduled backups (schedule was deleted)
+    const orphanedBackups = items.filter(
+      backup => backup.scheduleId && !validScheduleIds.has(backup.scheduleId)
+    );
+
+    // Keep only the most recent 5 orphaned backups per deleted schedule
+    const orphansBySchedule = new Map<string, typeof orphanedBackups>();
+    for (const backup of orphanedBackups) {
+      const scheduleId = backup.scheduleId!;
+      if (!orphansBySchedule.has(scheduleId)) {
+        orphansBySchedule.set(scheduleId, []);
+      }
+      orphansBySchedule.get(scheduleId)!.push(backup);
+    }
+
+    let deletedCount = 0;
+    let freedBytes = 0;
+    let retainedCount = 0;
+
+    for (const [_scheduleId, backups] of orphansBySchedule) {
+      // Sort by date descending and keep first 5
+      backups.sort((a, b) => b.startedAt.getTime() - a.startedAt.getTime());
+      const toDelete = backups.slice(5);
+      retainedCount += Math.min(backups.length, 5);
+
+      for (const backup of toDelete) {
+        try {
+          const filePath = (backup.metadata as any)?.archivePath || backup.filePath;
+          if (filePath) {
+            try {
+              const stats = await fsp.stat(filePath);
+              freedBytes += stats.size;
+              await fsp.unlink(filePath);
+            } catch {
+              // File might not exist
+            }
+          }
+
+          await this.repository.deleteBackupRecord(backup.id);
+          deletedCount++;
+        } catch (error) {
+          logger.warn('Failed to delete orphaned backup', {
+            backupId: backup.id,
+            error: error instanceof Error ? error.message : String(error),
+          });
+        }
+      }
+    }
+
+    return {
+      scheduleId: 'orphaned',
+      scheduleName: 'Orphaned Backups',
+      deletedCount,
+      retainedCount,
+      freedBytes,
+    };
+  }
+}

backend/src/features/backup/domain/backup.service.ts

@@ -0,0 +1,446 @@
+/**
+ * @ai-summary Core backup service for create, list, download, delete operations
+ * @ai-context Orchestrates backup operations and sends notifications
+ */
+
+import * as fs from 'fs';
+import * as fsp from 'fs/promises';
+import * as path from 'path';
+import { Pool } from 'pg';
+import { logger } from '../../../core/logging/logger';
+import { BackupRepository } from '../data/backup.repository';
+import { BackupArchiveService } from './backup-archive.service';
+import {
+  BACKUP_CONFIG,
+  BackupHistory,
+  BackupSchedule,
+  BackupSettingsMap,
+  CreateBackupOptions,
+  BackupResult,
+  ListBackupsParams,
+  ListBackupsResponse,
+  BackupFrequency,
+  ScheduleResponse,
+} from './backup.types';
+
+export class BackupService {
+  private repository: BackupRepository;
+  private archiveService: BackupArchiveService;
+
+  constructor(pool: Pool) {
+    this.repository = new BackupRepository(pool);
+    this.archiveService = new BackupArchiveService();
+  }
+
+  // ============================================
+  // Backup Operations
+  // ============================================
+
+  /**
+   * Creates a new backup
+   */
+  async createBackup(options: CreateBackupOptions): Promise<BackupResult> {
+    const timestamp = new Date().toISOString().replace(/[:.]/g, '-').slice(0, 19);
+    const tempFilename = `backup_${timestamp}`;
+
+    // Create initial backup record
+    const backupRecord = await this.repository.createBackupRecord({
+      scheduleId: options.scheduleId,
+      backupType: options.backupType,
+      filename: tempFilename,
+      filePath: '',
+      fileSizeBytes: 0,
+      createdBy: options.createdBy,
+      metadata: { name: options.name },
+    });
+
+    logger.info('Starting backup creation', {
+      backupId: backupRecord.id,
+      backupType: options.backupType,
+      scheduleName: options.name,
+    });
+
+    try {
+      // Get schedule name if applicable
+      let scheduleName: string | undefined;
+      if (options.scheduleId) {
+        const schedule = await this.repository.getScheduleById(options.scheduleId);
+        scheduleName = schedule?.name;
+      }
+
+      // Create the archive
+      const result = await this.archiveService.createArchive(backupRecord.id, {
+        scheduleName: scheduleName || options.name,
+        backupType: options.backupType,
+        includeDocuments: options.includeDocuments,
+        createdBy: options.createdBy || undefined,
+      });
+
+      // Update the backup record with final details
+      const filename = path.basename(result.archivePath);
+      await this.repository.completeBackup(backupRecord.id, {
+        fileSizeBytes: result.sizeBytes,
+        databaseTablesCount: result.manifest.contents.database.tablesCount,
+        documentsCount: result.manifest.contents.documents.totalFiles,
+        metadata: {
+          ...result.manifest.metadata,
+          filename,
+          archivePath: result.archivePath,
+        },
+      });
+
+      logger.info('Backup created successfully', {
+        backupId: backupRecord.id,
+        filename,
+        sizeBytes: result.sizeBytes,
+      });
+
+      // Send success notification
+      await this.sendNotification('success', backupRecord.id);
+
+      return {
+        success: true,
+        backupId: backupRecord.id,
+        filePath: result.archivePath,
+      };
+    } catch (error) {
+      const errorMessage = error instanceof Error ? error.message : String(error);
+
+      logger.error('Backup creation failed', {
+        backupId: backupRecord.id,
+        error: errorMessage,
+      });
+
+      // Update record with failure
+      await this.repository.failBackup(backupRecord.id, errorMessage);
+
+      // Send failure notification
+      await this.sendNotification('failure', backupRecord.id, errorMessage);
+
+      return {
+        success: false,
+        backupId: backupRecord.id,
+        error: errorMessage,
+      };
+    }
+  }
+
+  /**
+   * Lists backups with pagination
+   */
+  async listBackups(params: ListBackupsParams): Promise<ListBackupsResponse> {
+    const page = params.page || 1;
+    const pageSize = params.pageSize || 20;
+
+    const { items, total } = await this.repository.listBackups(params);
+
+    return {
+      items,
+      total,
+      page,
+      pageSize,
+      totalPages: Math.ceil(total / pageSize),
+    };
+  }
+
+  /**
+   * Gets a single backup by ID
+   */
+  async getBackup(id: string): Promise<BackupHistory | null> {
+    return this.repository.getBackupById(id);
+  }
+
+  /**
+   * Gets the file path for downloading a backup
+   */
+  async getBackupFilePath(id: string): Promise<string | null> {
+    const backup = await this.repository.getBackupById(id);
+    if (!backup || backup.status !== 'completed') {
+      return null;
+    }
+
+    const filePath = (backup.metadata as any)?.archivePath || backup.filePath;
+    if (!filePath) {
+      return null;
+    }
+
+    // Verify file exists
+    try {
+      await fsp.access(filePath);
+      return filePath;
+    } catch {
+      return null;
+    }
+  }
+
+  /**
+   * Creates a readable stream for downloading a backup
+   */
+  async createDownloadStream(id: string): Promise<{
+    stream: fs.ReadStream;
+    filename: string;
+    size: number;
+  } | null> {
+    const filePath = await this.getBackupFilePath(id);
+    if (!filePath) {
+      return null;
+    }
+
+    const backup = await this.repository.getBackupById(id);
+    if (!backup) {
+      return null;
+    }
+
+    const stats = await fsp.stat(filePath);
+    const filename = path.basename(filePath);
+
+    return {
+      stream: fs.createReadStream(filePath),
+      filename,
+      size: stats.size,
+    };
+  }
+
+  /**
+   * Deletes a backup (file and record)
+   */
+  async deleteBackup(id: string): Promise<boolean> {
+    const backup = await this.repository.getBackupById(id);
+    if (!backup) {
+      return false;
+    }
+
+    // Delete the file if it exists
+    const filePath = (backup.metadata as any)?.archivePath || backup.filePath;
+    if (filePath) {
+      try {
+        await fsp.unlink(filePath);
+        logger.info('Backup file deleted', { backupId: id, filePath });
+      } catch (error) {
+        // File might not exist, continue with record deletion
+        logger.warn('Failed to delete backup file', {
+          backupId: id,
+          filePath,
+          error: error instanceof Error ? error.message : String(error),
+        });
+      }
+    }
+
+    // Delete the database record
+    return this.repository.deleteBackupRecord(id);
+  }
+
+  /**
+   * Imports an uploaded backup file
+   */
+  async importUploadedBackup(
+    filePath: string,
+    originalFilename: string,
+    createdBy?: string
+  ): Promise<BackupHistory> {
+    // Validate the archive
+    const validation = await this.archiveService.validateArchive(filePath);
+    if (!validation.valid) {
+      throw new Error(`Invalid backup archive: ${validation.error}`);
+    }
+
+    const manifest = validation.manifest!;
+    const stats = await fsp.stat(filePath);
+
+    // Move file to backup storage
+    const timestamp = new Date().toISOString().replace(/[:.]/g, '-').slice(0, 19);
+    const destFilename = `uploaded_${timestamp}_${path.basename(originalFilename)}`;
+    const destPath = path.join(BACKUP_CONFIG.storagePath, destFilename);
+
+    await fsp.mkdir(BACKUP_CONFIG.storagePath, { recursive: true });
+    await fsp.copyFile(filePath, destPath);
+    await fsp.unlink(filePath);
+
+    // Create backup record
+    const record = await this.repository.createBackupRecord({
+      scheduleId: null,
+      backupType: 'manual',
+      filename: destFilename,
+      filePath: destPath,
+      fileSizeBytes: stats.size,
+      createdBy,
+      metadata: {
+        originalFilename,
+        imported: true,
+        manifestVersion: manifest.version,
+        originalCreatedAt: manifest.createdAt,
+      },
+    });
+
+    // Complete the record immediately since it's already a valid backup
+    return (await this.repository.completeBackup(record.id, {
+      fileSizeBytes: stats.size,
+      databaseTablesCount: manifest.contents.database.tablesCount,
+      documentsCount: manifest.contents.documents.totalFiles,
+      metadata: {
+        archivePath: destPath,
+        originalFilename,
+        imported: true,
+      },
+    }))!;
+  }
+
+  // ============================================
+  // Schedule Operations
+  // ============================================
+
+  /**
+   * Lists all backup schedules with last backup info
+   */
+  async listSchedules(): Promise<ScheduleResponse[]> {
+    const schedules = await this.repository.listSchedules();
+    const result: ScheduleResponse[] = [];
+
+    for (const schedule of schedules) {
+      const lastBackup = await this.repository.getLastBackupForSchedule(schedule.id);
+      result.push({
+        ...schedule,
+        lastBackup: lastBackup || undefined,
+      });
+    }
+
+    return result;
+  }
+
+  /**
+   * Gets a single schedule by ID
+   */
+  async getSchedule(id: string): Promise<ScheduleResponse | null> {
+    const schedule = await this.repository.getScheduleById(id);
+    if (!schedule) {
+      return null;
+    }
+
+    const lastBackup = await this.repository.getLastBackupForSchedule(id);
+    return {
+      ...schedule,
+      lastBackup: lastBackup || undefined,
+    };
+  }
+
+  /**
+   * Creates a new backup schedule
+   */
+  async createSchedule(
+    name: string,
+    frequency: BackupFrequency,
+    retentionCount?: number,
+    isEnabled?: boolean
+  ): Promise<BackupSchedule> {
+    return this.repository.createSchedule(
+      name,
+      frequency,
+      retentionCount,
+      isEnabled
+    );
+  }
+
+  /**
+   * Updates a backup schedule
+   */
+  async updateSchedule(
+    id: string,
+    updates: Partial<{
+      name: string;
+      frequency: BackupFrequency;
+      retentionCount: number;
+      isEnabled: boolean;
+    }>
+  ): Promise<BackupSchedule | null> {
+    return this.repository.updateSchedule(id, updates);
+  }
+
+  /**
+   * Deletes a backup schedule
+   */
+  async deleteSchedule(id: string): Promise<boolean> {
+    return this.repository.deleteSchedule(id);
+  }
+
+  /**
+   * Toggles a schedule's enabled state
+   */
+  async toggleSchedule(id: string): Promise<BackupSchedule | null> {
+    const schedule = await this.repository.getScheduleById(id);
+    if (!schedule) {
+      return null;
+    }
+
+    return this.repository.updateSchedule(id, { isEnabled: !schedule.isEnabled });
+  }
+
+  // ============================================
+  // Settings Operations
+  // ============================================
+
+  /**
+   * Gets backup settings
+   */
+  async getSettings(): Promise<BackupSettingsMap> {
+    return this.repository.getSettings();
+  }
+
+  /**
+   * Updates backup settings
+   */
+  async updateSettings(updates: Partial<BackupSettingsMap>): Promise<BackupSettingsMap> {
+    await this.repository.updateSettings(updates);
+    return this.repository.getSettings();
+  }
+
+  // ============================================
+  // Notification Helpers
+  // ============================================
+
+  /**
+   * Sends backup notification email
+   */
+  private async sendNotification(
+    type: 'success' | 'failure',
+    backupId: string,
+    errorMessage?: string
+  ): Promise<void> {
+    try {
+      const settings = await this.repository.getSettings();
+
+      // Check if notifications are enabled
+      if (type === 'success' && !settings.emailOnSuccess) {
+        return;
+      }
+      if (type === 'failure' && !settings.emailOnFailure) {
+        return;
+      }
+
+      // Check if admin email is configured
+      if (!settings.adminEmail) {
+        logger.debug('Backup notification skipped: no admin email configured');
+        return;
+      }
+
+      const backup = await this.repository.getBackupById(backupId);
+      if (!backup) {
+        return;
+      }
+
+      // TODO: Integrate with email service when implementing notifications
+      // For now, just log the notification
+      logger.info('Backup notification would be sent', {
+        type,
+        backupId,
+        adminEmail: settings.adminEmail,
+        errorMessage,
+      });
+    } catch (error) {
+      logger.error('Failed to send backup notification', {
+        type,
+        backupId,
+        error: error instanceof Error ? error.message : String(error),
+      });
+    }
+  }
+}

backend/src/features/backup/domain/backup.types.ts

@@ -0,0 +1,269 @@
+/**
+ * @ai-summary Core TypeScript types for the backup feature
+ * @ai-context Defines interfaces for backup schedules, history, settings, and operations
+ */
+
+// ============================================
+// Configuration Constants
+// ============================================
+
+export const BACKUP_CONFIG = {
+  storagePath: process.env.BACKUP_STORAGE_PATH || '/app/data/backups',
+  documentsPath: '/app/data/documents',
+  tempPath: '/tmp/backup-work',
+  maxFileSizeMB: 1024,
+  archiveVersion: '1.0.0',
+} as const;
+
+export const CRON_EXPRESSIONS = {
+  hourly: '0 * * * *',
+  daily: '0 3 * * *',
+  weekly: '0 3 * * 0',
+  monthly: '0 3 1 * *',
+} as const;
+
+export const DEFAULT_RETENTION = {
+  hourly: 24,
+  daily: 7,
+  weekly: 4,
+  monthly: 12,
+} as const;
+
+// ============================================
+// Enums and Union Types
+// ============================================
+
+export type BackupFrequency = 'hourly' | 'daily' | 'weekly' | 'monthly';
+export type BackupType = 'scheduled' | 'manual';
+export type BackupStatus = 'in_progress' | 'completed' | 'failed';
+
+// ============================================
+// Database Entity Types
+// ============================================
+
+export interface BackupSchedule {
+  id: string;
+  name: string;
+  frequency: BackupFrequency;
+  cronExpression: string;
+  retentionCount: number;
+  isEnabled: boolean;
+  lastRunAt: Date | null;
+  nextRunAt: Date | null;
+  createdAt: Date;
+  updatedAt: Date;
+}
+
+export interface BackupHistory {
+  id: string;
+  scheduleId: string | null;
+  backupType: BackupType;
+  filename: string;
+  filePath: string;
+  fileSizeBytes: number;
+  databaseTablesCount: number | null;
+  documentsCount: number | null;
+  status: BackupStatus;
+  errorMessage: string | null;
+  startedAt: Date;
+  completedAt: Date | null;
+  createdBy: string | null;
+  metadata: BackupMetadata;
+}
+
+export interface BackupSettings {
+  id: string;
+  settingKey: string;
+  settingValue: string;
+  updatedAt: Date;
+}
+
+// ============================================
+// Archive Manifest Types
+// ============================================
+
+export interface BackupManifest {
+  version: string;
+  createdAt: string;
+  applicationVersion: string;
+  backupType: BackupType;
+  scheduleName: string | null;
+  contents: {
+    database: {
+      filename: string;
+      tablesCount: number;
+      postgresqlVersion: string;
+      sizeBytes: number;
+      checksum: string;
+    };
+    documents: {
+      totalFiles: number;
+      totalSizeBytes: number;
+      usersCount: number;
+    };
+  };
+  metadata: BackupMetadata;
+}
+
+export interface BackupMetadata {
+  hostname?: string;
+  createdBy?: string;
+  compression?: string;
+  postgresqlVersion?: string;
+  [key: string]: string | number | boolean | undefined;
+}
+
+// ============================================
+// API Request/Response Types
+// ============================================
+
+// List Backups
+export interface ListBackupsParams {
+  page?: number;
+  pageSize?: number;
+  status?: BackupStatus;
+  backupType?: BackupType;
+  sortBy?: 'startedAt' | 'fileSizeBytes' | 'status';
+  sortOrder?: 'asc' | 'desc';
+}
+
+export interface ListBackupsResponse {
+  items: BackupHistory[];
+  total: number;
+  page: number;
+  pageSize: number;
+  totalPages: number;
+}
+
+// Create Backup
+export interface CreateBackupRequest {
+  name?: string;
+  includeDocuments?: boolean;
+}
+
+export interface CreateBackupResponse {
+  backupId: string;
+  status: BackupStatus;
+  message: string;
+}
+
+// Upload Backup
+export interface UploadBackupResponse {
+  backupId: string;
+  filename: string;
+  fileSizeBytes: number;
+  message: string;
+}
+
+// Restore Preview
+export interface RestorePreviewResponse {
+  backupId: string;
+  manifest: BackupManifest;
+  warnings: string[];
+  estimatedDuration: string;
+}
+
+// Restore Execute
+export interface RestoreRequest {
+  createSafetyBackup?: boolean;
+}
+
+export interface RestoreResponse {
+  success: boolean;
+  safetyBackupId?: string;
+  restoredAt: string;
+  message: string;
+}
+
+// Schedules
+export interface CreateScheduleRequest {
+  name: string;
+  frequency: BackupFrequency;
+  retentionCount?: number;
+  isEnabled?: boolean;
+}
+
+export interface UpdateScheduleRequest {
+  name?: string;
+  frequency?: BackupFrequency;
+  retentionCount?: number;
+  isEnabled?: boolean;
+}
+
+export interface ScheduleResponse extends BackupSchedule {
+  lastBackup?: BackupHistory | null;
+}
+
+// Settings
+export interface BackupSettingsMap {
+  emailOnSuccess: boolean;
+  emailOnFailure: boolean;
+  adminEmail: string;
+  maxBackupSizeMb: number;
+  compressionEnabled: boolean;
+}
+
+export interface UpdateSettingsRequest {
+  emailOnSuccess?: boolean;
+  emailOnFailure?: boolean;
+  adminEmail?: string;
+  maxBackupSizeMb?: number;
+  compressionEnabled?: boolean;
+}
+
+// ============================================
+// Service Operation Types
+// ============================================
+
+export interface CreateBackupOptions {
+  name?: string;
+  scheduleId?: string | null;
+  backupType: BackupType;
+  createdBy?: string | null;
+  includeDocuments?: boolean;
+}
+
+export interface BackupResult {
+  success: boolean;
+  backupId: string;
+  filePath?: string;
+  error?: string;
+}
+
+export interface RestoreOptions {
+  backupId: string;
+  createSafetyBackup?: boolean;
+}
+
+export interface RestoreResult {
+  success: boolean;
+  safetyBackupId?: string;
+  error?: string;
+}
+
+export interface RetentionCleanupResult {
+  scheduleId: string;
+  scheduleName: string;
+  deletedCount: number;
+  retainedCount: number;
+  freedBytes: number;
+}
+
+// ============================================
+// Job Types
+// ============================================
+
+export interface ScheduledBackupJobResult {
+  processed: number;
+  succeeded: number;
+  failed: number;
+  errors: Array<{ scheduleId: string; error: string }>;
+}
+
+export interface RetentionCleanupJobResult {
+  processed: number;
+  totalDeleted: number;
+  totalFreedBytes: number;
+  results: RetentionCleanupResult[];
+  errors: Array<{ scheduleId: string; error: string }>;
+}

backend/src/features/backup/index.ts

@@ -0,0 +1,24 @@
+/**
+ * @ai-summary Backup feature module exports
+ * @ai-context Entry point for the backup and restore feature
+ */
+
+// API
+export { registerBackupRoutes } from './api/backup.routes';
+export { BackupController } from './api/backup.controller';
+
+// Domain Services
+export { BackupService } from './domain/backup.service';
+export { BackupArchiveService } from './domain/backup-archive.service';
+export { BackupRestoreService } from './domain/backup-restore.service';
+export { BackupRetentionService } from './domain/backup-retention.service';
+
+// Data
+export { BackupRepository } from './data/backup.repository';
+
+// Jobs
+export { processScheduledBackups, setBackupJobPool } from './jobs/backup-scheduled.job';
+export { processBackupRetention, setBackupCleanupJobPool } from './jobs/backup-cleanup.job';
+
+// Types
+export * from './domain/backup.types';

backend/src/features/backup/jobs/backup-cleanup.job.ts

@@ -0,0 +1,53 @@
+/**
+ * @ai-summary Job for backup retention cleanup
+ * @ai-context Runs daily at 4 AM to enforce retention policies
+ */
+
+import { Pool } from 'pg';
+import { logger } from '../../../core/logging/logger';
+import { BackupRetentionService } from '../domain/backup-retention.service';
+import { RetentionCleanupJobResult } from '../domain/backup.types';
+
+let pool: Pool | null = null;
+
+/**
+ * Sets the database pool for the job
+ */
+export function setBackupCleanupJobPool(dbPool: Pool): void {
+  pool = dbPool;
+}
+
+/**
+ * Processes backup retention cleanup for all schedules
+ */
+export async function processBackupRetention(): Promise<RetentionCleanupJobResult> {
+  if (!pool) {
+    throw new Error('Database pool not initialized for backup cleanup job');
+  }
+
+  const retentionService = new BackupRetentionService(pool);
+
+  try {
+    logger.info('Starting backup retention cleanup job');
+
+    const result = await retentionService.processRetentionCleanup();
+
+    // Also cleanup failed backups
+    const failedCount = await retentionService.cleanupFailedBackups();
+
+    logger.info('Backup retention cleanup job completed', {
+      schedulesProcessed: result.processed,
+      totalDeleted: result.totalDeleted + failedCount,
+      totalFreedBytes: result.totalFreedBytes,
+      failedBackupsDeleted: failedCount,
+      errors: result.errors.length,
+    });
+
+    return result;
+  } catch (error) {
+    logger.error('Backup retention cleanup job failed', {
+      error: error instanceof Error ? error.message : String(error),
+    });
+    throw error;
+  }
+}

backend/src/features/backup/jobs/backup-scheduled.job.ts

@@ -0,0 +1,154 @@
+/**
+ * @ai-summary Job for processing scheduled backups
+ * @ai-context Runs every minute to check for due scheduled backups
+ */
+
+import { Pool } from 'pg';
+import { logger } from '../../../core/logging/logger';
+import { BackupRepository } from '../data/backup.repository';
+import { BackupService } from '../domain/backup.service';
+import { ScheduledBackupJobResult, BackupFrequency } from '../domain/backup.types';
+
+let pool: Pool | null = null;
+
+/**
+ * Sets the database pool for the job
+ */
+export function setBackupJobPool(dbPool: Pool): void {
+  pool = dbPool;
+}
+
+/**
+ * Processes all scheduled backups that are due
+ */
+export async function processScheduledBackups(): Promise<ScheduledBackupJobResult> {
+  if (!pool) {
+    throw new Error('Database pool not initialized for backup job');
+  }
+
+  const repository = new BackupRepository(pool);
+  const backupService = new BackupService(pool);
+
+  const result: ScheduledBackupJobResult = {
+    processed: 0,
+    succeeded: 0,
+    failed: 0,
+    errors: [],
+  };
+
+  try {
+    // Get all enabled schedules that are due
+    const dueSchedules = await repository.getEnabledSchedulesDue();
+
+    if (dueSchedules.length === 0) {
+      logger.debug('No scheduled backups due');
+      return result;
+    }
+
+    logger.info('Processing scheduled backups', { count: dueSchedules.length });
+
+    for (const schedule of dueSchedules) {
+      result.processed++;
+
+      try {
+        logger.info('Running scheduled backup', {
+          scheduleId: schedule.id,
+          scheduleName: schedule.name,
+          frequency: schedule.frequency,
+        });
+
+        // Create the backup
+        const backupResult = await backupService.createBackup({
+          name: schedule.name,
+          scheduleId: schedule.id,
+          backupType: 'scheduled',
+          includeDocuments: true,
+        });
+
+        if (backupResult.success) {
+          result.succeeded++;
+          logger.info('Scheduled backup completed', {
+            scheduleId: schedule.id,
+            backupId: backupResult.backupId,
+          });
+        } else {
+          result.failed++;
+          result.errors.push({
+            scheduleId: schedule.id,
+            error: backupResult.error || 'Unknown error',
+          });
+          logger.error('Scheduled backup failed', {
+            scheduleId: schedule.id,
+            error: backupResult.error,
+          });
+        }
+
+        // Update schedule's next run time
+        const nextRunAt = calculateNextRun(schedule.frequency);
+        await repository.updateScheduleLastRun(schedule.id, nextRunAt);
+      } catch (error) {
+        result.failed++;
+        const errorMessage = error instanceof Error ? error.message : String(error);
+        result.errors.push({ scheduleId: schedule.id, error: errorMessage });
+
+        logger.error('Error processing scheduled backup', {
+          scheduleId: schedule.id,
+          error: errorMessage,
+        });
+
+        // Still update next run time to prevent repeated failures
+        try {
+          const nextRunAt = calculateNextRun(schedule.frequency);
+          await repository.updateScheduleLastRun(schedule.id, nextRunAt);
+        } catch {
+          // Ignore error updating next run
+        }
+      }
+    }
+
+    logger.info('Scheduled backup processing completed', {
+      processed: result.processed,
+      succeeded: result.succeeded,
+      failed: result.failed,
+    });
+
+    return result;
+  } catch (error) {
+    logger.error('Failed to process scheduled backups', {
+      error: error instanceof Error ? error.message : String(error),
+    });
+    throw error;
+  }
+}
+
+/**
+ * Calculates the next run time for a schedule
+ */
+function calculateNextRun(frequency: BackupFrequency): Date {
+  const now = new Date();
+  const next = new Date(now);
+
+  switch (frequency) {
+    case 'hourly':
+      next.setHours(next.getHours() + 1);
+      next.setMinutes(0, 0, 0);
+      break;
+    case 'daily':
+      next.setDate(next.getDate() + 1);
+      next.setHours(3, 0, 0, 0);
+      break;
+    case 'weekly': {
+      const daysUntilSunday = (7 - next.getDay()) % 7 || 7;
+      next.setDate(next.getDate() + daysUntilSunday);
+      next.setHours(3, 0, 0, 0);
+      break;
+    }
+    case 'monthly':
+      next.setMonth(next.getMonth() + 1);
+      next.setDate(1);
+      next.setHours(3, 0, 0, 0);
+      break;
+  }
+
+  return next;
+}

backend/src/features/backup/migrations/001_create_backup_tables.sql

@@ -0,0 +1,95 @@
+-- Migration: Create backup feature tables
+-- Description: Tables for backup schedules, history, and settings
+
+-- ============================================
+-- backup_schedules - Scheduled backup configurations
+-- ============================================
+CREATE TABLE IF NOT EXISTS backup_schedules (
+    id UUID PRIMARY KEY DEFAULT gen_random_uuid(),
+    name VARCHAR(100) NOT NULL,
+    frequency VARCHAR(20) NOT NULL CHECK (frequency IN ('hourly', 'daily', 'weekly', 'monthly')),
+    cron_expression VARCHAR(50) NOT NULL,
+    retention_count INTEGER NOT NULL DEFAULT 7,
+    is_enabled BOOLEAN DEFAULT true,
+    last_run_at TIMESTAMP WITH TIME ZONE,
+    next_run_at TIMESTAMP WITH TIME ZONE,
+    created_at TIMESTAMP WITH TIME ZONE DEFAULT NOW(),
+    updated_at TIMESTAMP WITH TIME ZONE DEFAULT NOW()
+);
+
+-- ============================================
+-- backup_history - Record of all backup operations
+-- ============================================
+CREATE TABLE IF NOT EXISTS backup_history (
+    id UUID PRIMARY KEY DEFAULT gen_random_uuid(),
+    schedule_id UUID REFERENCES backup_schedules(id) ON DELETE SET NULL,
+    backup_type VARCHAR(20) NOT NULL CHECK (backup_type IN ('scheduled', 'manual')),
+    filename VARCHAR(255) NOT NULL,
+    file_path VARCHAR(500) NOT NULL,
+    file_size_bytes BIGINT NOT NULL,
+    database_tables_count INTEGER,
+    documents_count INTEGER,
+    status VARCHAR(20) NOT NULL CHECK (status IN ('in_progress', 'completed', 'failed')),
+    error_message TEXT,
+    started_at TIMESTAMP WITH TIME ZONE DEFAULT NOW(),
+    completed_at TIMESTAMP WITH TIME ZONE,
+    created_by VARCHAR(255),
+    metadata JSONB DEFAULT '{}'
+);
+
+-- ============================================
+-- backup_settings - Global backup configuration
+-- ============================================
+CREATE TABLE IF NOT EXISTS backup_settings (
+    id UUID PRIMARY KEY DEFAULT gen_random_uuid(),
+    setting_key VARCHAR(50) UNIQUE NOT NULL,
+    setting_value TEXT NOT NULL,
+    updated_at TIMESTAMP WITH TIME ZONE DEFAULT NOW()
+);
+
+-- ============================================
+-- Indexes
+-- ============================================
+CREATE INDEX IF NOT EXISTS idx_backup_history_status ON backup_history(status);
+CREATE INDEX IF NOT EXISTS idx_backup_history_started ON backup_history(started_at DESC);
+CREATE INDEX IF NOT EXISTS idx_backup_history_schedule ON backup_history(schedule_id);
+CREATE INDEX IF NOT EXISTS idx_backup_schedules_enabled ON backup_schedules(is_enabled);
+CREATE INDEX IF NOT EXISTS idx_backup_schedules_next_run ON backup_schedules(next_run_at);
+
+-- ============================================
+-- Triggers for updated_at
+-- ============================================
+
+-- Create update_updated_at_column function if it doesn't exist
+CREATE OR REPLACE FUNCTION update_updated_at_column()
+RETURNS TRIGGER AS $$
+BEGIN
+    NEW.updated_at = NOW();
+    RETURN NEW;
+END;
+$$ language 'plpgsql';
+
+-- Trigger for backup_schedules
+DROP TRIGGER IF EXISTS backup_schedules_updated_at ON backup_schedules;
+CREATE TRIGGER backup_schedules_updated_at
+    BEFORE UPDATE ON backup_schedules
+    FOR EACH ROW
+    EXECUTE FUNCTION update_updated_at_column();
+
+-- Trigger for backup_settings
+DROP TRIGGER IF EXISTS backup_settings_updated_at ON backup_settings;
+CREATE TRIGGER backup_settings_updated_at
+    BEFORE UPDATE ON backup_settings
+    FOR EACH ROW
+    EXECUTE FUNCTION update_updated_at_column();
+
+-- ============================================
+-- Default settings
+-- ============================================
+INSERT INTO backup_settings (setting_key, setting_value) VALUES
+    ('email_on_success', 'true'),
+    ('email_on_failure', 'true'),
+    ('admin_email', ''),
+    ('max_backup_size_mb', '1024'),
+    ('compression_enabled', 'true')
+ON CONFLICT (setting_key) DO NOTHING;