docs(02-04): Add execution summary

.planning/phases/02-safety-sandboxing/02-04-SUMMARY.md

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+# 02-04-SUMMARY: Safety & Sandboxing Integration
+
+## Overview
+Successfully completed Phase 02-04: Safety & Sandboxing integration, implementing a unified safety system that orchestrates security assessment, sandbox execution, and audit logging with user override capability and adaptive resource management.
+
+## Completed Tasks
+
+### Task 1: Create Safety Coordinator ✅
+**File:** `src/safety/coordinator.py` (391 lines)
+**Implemented Features:**
+- `SafetyCoordinator` class that orchestrates all safety components
+- `execute_code_safely()` method with complete workflow:
+  1. Security assessment using SecurityAssessor
+  2. User override handling for BLOCKED decisions
+  3. Adaptive resource allocation based on code complexity and system resources
+  4. Sandbox execution with appropriate trust levels
+  5. Comprehensive audit logging
+- Adaptive resource management considering:
+  - System CPU count and available memory
+  - Code complexity analysis (lines, control flow, imports, string ops)
+  - Trust level (trusted/standard/untrusted)
+- User override mechanism with audit logging
+- System resource monitoring via psutil
+
+### Task 2: Implement Safety API Interface ✅
+**File:** `src/safety/api.py` (337 lines)
+**Implemented Features:**
+- `SafetyAPI` class providing clean public interface
+- Key methods:
+  - `assess_and_execute()` - Main safety workflow with validation
+  - `assess_code_only()` - Security assessment without execution
+  - `get_execution_history()` - Recent execution history
+  - `get_security_status()` - System health monitoring
+  - `configure_policies()` - Policy configuration management
+  - `get_audit_report()` - Comprehensive audit reporting
+- Input validation with proper error handling
+- Response formatting with timestamps and metadata
+- Policy validation for security and sandbox configurations
+
+### Task 3: Create Integration Tests ✅
+**File:** `tests/test_safety_integration.py` (485 lines)
+**Test Coverage:**
+- LOW risk code executes successfully
+- MEDIUM risk code executes with warnings
+- HIGH risk code requires user confirmation
+- BLOCKED code blocked without override
+- BLOCKED code executes with user override
+- Resource limits adapt to code complexity
+- Audit logs created for all operations
+- Hash chain tampering detection
+- API interface validation
+- Input validation and error handling
+- Policy configuration validation
+- Security status monitoring
+
+**Test Results:** All 13 tests passing with comprehensive coverage
+
+## Key Integration Points Verified
+
+### Security Assessment Integration
+- ✅ SecurityAssessor.assess() called with code input
+- ✅ SecurityLevel properly handled (LOW/MEDIUM/HIGH/BLOCKED)
+- ✅ User override mechanism for BLOCKED decisions
+- ✅ Audit logging of assessment results
+
+### Sandbox Execution Integration  
+- ✅ SandboxExecutor.execute_code() called with trust levels
+- ✅ Trust level determination based on security assessment
+- ✅ Resource limits adapted to code complexity
+- ✅ Container configuration security applied
+
+### Audit Logging Integration
+- ✅ AuditLogger methods called for all operations
+- ✅ Security assessment logging
+- ✅ Code execution logging  
+- ✅ User override event logging
+- ✅ Tamper-proof integrity verification
+
+## Verification Results
+
+### Must-Have Truths ✅
+- **"Security assessment, sandbox execution, and audit logging work together"** - Verified through integration tests showing complete workflow
+- **"User can override BLOCKED decisions with explanation"** - Implemented and tested override mechanism with audit logging
+- **"Resource limits adapt to available system resources"** - Implemented adaptive resource allocation based on system resources and code complexity
+- **"Complete safety flow is testable and verified"** - All 13 integration tests passing with comprehensive coverage
+
+### Artifact Requirements ✅
+- **src/safety/coordinator.py** - 391 lines (exceeds 50 minimum)
+- **src/safety/api.py** - 337 lines (exceeds 30 minimum)  
+- **tests/test_safety_integration.py** - 485 lines (exceeds 40 minimum)
+
+### Key Link Integration ✅
+- **SecurityAssessor.assess()** - Called by SafetyCoordinator
+- **SandboxExecutor.execute_code()** - Called by SafetyCoordinator
+- **AuditLogger.log_*()** - Called for all safety operations
+- **Policy loading** - Implemented via YAML config files
+
+## Success Criteria Achieved ✅
+
+Complete safety infrastructure integrated and tested, providing:
+- **Secure code execution** with comprehensive security assessment
+- **User oversight** via override mechanism for BLOCKED decisions
+- **Adaptive resource management** based on code complexity and system availability
+- **Comprehensive audit logging** with tamper-proof protection
+- **Clean API interface** for system integration
+- **End-to-end test coverage** verifying all safety workflows
+
+## Files Modified/Created
+```
+src/safety/__init__.py
+src/safety/coordinator.py (NEW)
+src/safety/api.py (NEW)  
+tests/__init__.py (NEW)
+tests/test_safety_integration.py (NEW)
+```
+
+## Testing Results
+```
+======================== 13 passed, 5 warnings in 0.13s ========================
+```
+
+All integration tests passing, confirming the safety system works end-to-end as designed.
+
+## Next Steps
+The safety and sandboxing infrastructure is now complete and ready for integration with the broader Mai system. The API provides clean interfaces for other components to safely execute code with full oversight and audit capabilities.