Add OWASP compliance mapping and security test case templates, and document version control implementation phases

memory-bank/features/version-control/approval-workflow.md

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+# Change Approval Workflow Implementation Plan  
+
+   ## Core Requirements  
+   1. Configurable approval stages  
+   2. Role-based reviewer assignments  
+   3. Parallel vs sequential approvals  
+   4. Audit trail of decisions  
+   5. Integration with existing locks/comments  
+
+   ## Technical Integration  
+   - **State Machine**  
+     Extend StateMachine interface:  
+     ```typescript  
+     interface ApprovalStateMachine extends StateMachine {  
+         currentStage: ApprovalStage;  
+         requiredApprovers: UserRef[];  
+         overridePolicy: 'majority' | 'unanimous';  
+     }  
+     ```  
+
+   - **Model Extensions**  
+     Enhance ChangeSet (line 7):  
+     ```python  
+     class ChangeSet(models.Model):  
+         approval_state = models.JSONField(default=list)  # [{stage: 1, approvers: [...]}]  
+         approval_history = models.JSONField(default=list)  
+     ```  
+
+   - **API Endpoints**  
+     Add to VersionControlViewSet (line 128):  
+     ```python  
+     @action(detail=True, methods=['post'])  
+     def submit_for_approval(self, request, pk=None):  
+         """Transition change set to approval state"""  
+     ```  
+
+   ## Security Considerations  
+   - Approval chain validation  
+   - Non-repudiation requirements  
+   - Conflict resolution protocols  
+   - Approval delegation safeguards  
+
+   ## Phase Plan  
+   1. **Week 1**: State machine implementation  
+   2. **Week 2**: Approval UI components  
+   3. **Week 3**: Integration testing  
+   4. **Week 4**: Deployment safeguards