feat: add comprehensive marketplace scenario testing and update production readiness workflow

🛒 Marketplace Testing Enhancement:
• Add complete marketplace workflow test with 6-step scenario
• Test GPU bidding from aitbc server to marketplace
• Test bid confirmation and job creation by aitbc1
• Test Ollama AI task submission and execution monitoring
• Test blockchain payment processing and transaction mining
• Add balance verification for both parties after payment
• Add marketplace status

security_summary.txt

@@ -0,0 +1,30 @@
+AITBC Security Configuration Summary
+Generated: So 29 Mär 2026 18:33:42 CEST
+
+Network Security:
+- Firewall configuration: Skipped as requested
+- Network security: Basic configuration completed
+
+SSH Hardening:
+- Root login: Enabled (development mode)
+- Password authentication disabled
+- Max authentication attempts: 3
+- Session timeout: 5 minutes
+
+Access Control:
+- User creation: Skipped as requested
+- Sudo configuration: Skipped as requested
+- Basic access control: Completed
+
+Monitoring:
+- Security monitoring script created
+- Hourly security checks scheduled
+- Logs stored in /var/log/aitbc/security.log
+
+Recommendations:
+1. Use SSH key authentication only
+2. Monitor security logs regularly
+3. Keep systems updated
+4. Review access controls regularly
+5. Implement intrusion detection system
+6. Configure firewall according to your security policy