feat: automated security hardening, contract testing, deployment orchestration, and security monitoring

[Abidoyesimze]

Summary

This PR adds four related subsystems to the StarForge CLI:

• Security hardening (D-59: Implement Contract Security Hardening Tools #407): security pattern library, automated hardening transforms, security checklist, code transformation, security validation, and hardening reports (JSON/HTML).
• Automated testing infrastructure (D-61: Implement Contract Testing Automation #409): test case generation from contract source, parallel contract test execution, test coverage analysis, result aggregation, and failure analysis.
• Deployment orchestration (D-57: Implement Contract Deployment Orchestration #405): orchestration engine with dependency resolution, deployment ordering, rollback orchestration, deployment state management, and DAG visualization.
• Continuous security monitoring (D-65: Implement Contract Security Monitoring #413): security event detection, anomaly detection, alerting, threat intelligence integration, security reporting, and incident response automation.

Changes

• src/commands/security.rs, src/utils/security/* — hardening, checklist, validation, report, anomaly detection, event rules, threat intel, incident response
• src/utils/test_coverage.rs, src/utils/test_generator.rs, src/utils/test_runner.rs, src/commands/test.rs — test generation, coverage analysis, parallel execution
• src/commands/orchestrate.rs, src/utils/deploy_orchestrator.rs, examples/deploy-manifest.json — deployment orchestration engine
• New integration tests: tests/security_hardening.rs, tests/security_monitoring.rs, tests/contract_testing_automation.rs, tests/deployment_orchestration.rs

Closes #407
Closes #409
Closes #405
Closes #413

Test plan

• cargo build succeeds
• cargo test passes for the new integration test suites
• Manually exercise starforge security harden/checklist/validate/report/monitor/incident subcommands
• Manually exercise starforge orchestrate plan/execute/rollback/list/visualize/status subcommands

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