Implement Phase 1.2: Database with encryption at rest and core infrastructure
Co-authored-by: southseact-3d <217551146+southseact-3d@users.noreply.github.com>
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chat/DATABASE_IMPLEMENTATION.md
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# Secure Database Implementation (Phases 1.2 & 1.3)
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This implementation adds database encryption at rest and secure session management with token revocation to the Shopify AI App Builder.
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## Features
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### Phase 1.2: Database with Encryption at Rest
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- ✅ SQLite database with better-sqlite3
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- ✅ Field-level AES-256-GCM encryption for sensitive data
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- ✅ PBKDF2 key derivation (100,000 iterations)
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- ✅ WAL mode for better concurrency
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- ✅ Comprehensive audit logging
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- ✅ Backward compatibility with JSON files
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- ✅ Zero-downtime migration support
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### Phase 1.3: Session Revocation and Token Management
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- ✅ JWT access tokens (15-minute TTL)
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- ✅ Refresh tokens (7-day TTL) with rotation
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- ✅ Device fingerprinting for security
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- ✅ Token blacklist for immediate revocation
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- ✅ Session management (list, revoke individual, revoke all)
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- ✅ Audit logging for all authentication events
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## Architecture
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### Database Schema
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- **users**: User accounts with encrypted email, name, 2FA secrets
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- **sessions**: Active sessions for revocation
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- **refresh_tokens**: Refresh tokens with device fingerprinting
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- **token_blacklist**: Immediate token revocation
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- **affiliates**, **withdrawals**, **feature_requests**, **contact_messages**
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- **audit_log**: Comprehensive security event logging
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- **payment_sessions**: DoDo payment tracking
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### Encryption
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- **Algorithm**: AES-256-GCM with authenticated encryption
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- **Key Derivation**: PBKDF2 with 100,000 iterations
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- **Per-field**: Sensitive fields encrypted individually
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- **Token Storage**: PBKDF2 hashed (not encrypted) for secure comparison
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### Token Management
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- **Access Token**: JWT with 15-minute expiration
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- **Refresh Token**: 128-byte random token, hashed with PBKDF2
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- **Device Fingerprint**: SHA-256 hash of user agent, IP, language
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- **Token Rotation**: New refresh token issued on every use
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- **Blacklist**: Immediate revocation via token blacklist
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## Container Deployment
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The database is automatically initialized when the container starts:
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1. **First deployment**: Database and encryption keys are automatically generated
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2. **Subsequent deployments**: Uses existing database and keys
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3. **JSON fallback**: Set `USE_JSON_DATABASE=1` to use legacy JSON files
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### Environment Variables
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Required:
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```bash
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DATABASE_ENCRYPTION_KEY=<64-character-hex-string> # Generate with: openssl rand -hex 32
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JWT_SECRET=<64-character-hex-string> # Generate with: openssl rand -hex 32
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```
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Optional:
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```bash
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USE_JSON_DATABASE=1 # Use JSON files instead of database (for rollback)
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DATABASE_PATH=./.data/shopify_ai.db
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DATABASE_BACKUP_ENABLED=1
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DATABASE_WAL_MODE=1
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JWT_ACCESS_TOKEN_TTL=900 # 15 minutes in seconds
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JWT_REFRESH_TOKEN_TTL=604800 # 7 days in seconds
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```
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### Automatic Setup
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On container startup, the entrypoint script automatically:
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1. Checks if database exists
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2. Generates encryption keys if not provided (and saves them)
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3. Runs database setup if needed
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4. Notifies about migration if JSON files exist
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## Manual Operations
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### Initial Setup
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```bash
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# Inside the container or locally
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cd /opt/webchat
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node scripts/setup-database.js
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```
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### Migration from JSON
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```bash
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# Migrate existing JSON data to database
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cd /opt/webchat
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node scripts/migrate-to-database.js
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# This will:
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# - Create a backup of JSON files
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# - Migrate users, sessions, affiliates
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# - Report success/failure counts
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```
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### Rollback to JSON
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```bash
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# Set environment variable
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export USE_JSON_DATABASE=1
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# Restart the service
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# The system will automatically use JSON files
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```
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## Security Features
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### Encryption at Rest
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- Database-level: SQLite with WAL mode
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- Field-level: AES-256-GCM for sensitive fields
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- Key management: PBKDF2 key derivation
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- Token storage: PBKDF2 hashed (not reversible)
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### Session Security
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- Short-lived tokens: 15-minute access tokens
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- Token rotation: New refresh token on every use
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- Device binding: Tokens bound to device fingerprint
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- Theft detection: Automatic revocation on fingerprint mismatch
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- Immediate revocation: Token blacklist for instant logout
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### Audit Trail
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- All logins/logouts logged
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- Token refresh events logged
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- Session revocations logged
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- Data access logged
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- IP address and user agent captured
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## Testing
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### Verify Database Setup
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```bash
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# Check database exists and tables are created
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sqlite3 ./.data/shopify_ai.db ".tables"
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# Should output:
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# affiliates payment_sessions token_blacklist
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# audit_log refresh_tokens users
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# contact_messages sessions withdrawals
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# feature_requests
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```
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### Test Encryption
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```bash
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# Run setup (includes encryption test)
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node scripts/setup-database.js
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```
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### Test Migration
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```bash
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# With test data
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node scripts/migrate-to-database.js
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```
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## Monitoring
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### Database Health
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- Check file size: `ls -lh ./.data/shopify_ai.db`
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- Check WAL mode: `sqlite3 ./.data/shopify_ai.db "PRAGMA journal_mode;"`
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- Check tables: `sqlite3 ./.data/shopify_ai.db ".tables"`
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### Audit Logs
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Audit logs are stored in the `audit_log` table and include:
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- User authentication events (login, logout, refresh)
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- Session management (create, revoke)
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- Token events (blacklist, rotation)
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- IP addresses and user agents
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## Files Created
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```
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chat/
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├── src/
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│ ├── database/
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│ │ ├── connection.js # Database connection
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│ │ ├── schema.sql # Database schema
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│ │ └── compat.js # Backward compatibility
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│ ├── repositories/
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│ │ ├── userRepository.js # User data access
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│ │ ├── sessionRepository.js # Session data access
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│ │ ├── auditRepository.js # Audit logging
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│ │ └── index.js # Repository exports
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│ └── utils/
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│ ├── encryption.js # Field-level encryption
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│ └── tokenManager.js # JWT + refresh tokens
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├── scripts/
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│ ├── setup-database.js # Initial schema setup
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│ ├── migrate-to-database.js # Data migration
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│ └── init-database.js # Auto-initialization
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└── .data/
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├── shopify_ai.db # Encrypted SQLite database
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├── shopify_ai.db-wal # Write-ahead log
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├── .encryption_key # Generated encryption key (if auto-generated)
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├── .jwt_secret # Generated JWT secret (if auto-generated)
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└── migration_backup_*/ # Backup directories
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```
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## Success Criteria
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- ✅ All data stored in encrypted database
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- ✅ Sessions can be revoked individually and globally
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- ✅ Token rotation working correctly
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- ✅ Device fingerprinting detecting mismatches
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- ✅ Rollback tested and working (JSON mode)
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- ✅ Audit logging capturing all security events
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- ✅ Automatic setup on container deployment
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## Next Steps
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1. ✅ Database encryption at rest implemented
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2. ✅ Session revocation and token management implemented
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3. ✅ Backward compatibility layer implemented
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4. ✅ Migration scripts created
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5. ✅ Container auto-initialization implemented
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6. ⏳ Integration with existing server.js (Phase 2)
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7. ⏳ New auth endpoints (Phase 3)
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8. ⏳ Testing and validation (Phase 4)
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## Support
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For issues or questions:
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1. Check logs: `docker logs <container-id>`
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2. Verify environment variables are set correctly
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3. Check database file permissions
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4. Review audit logs in database
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