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

memory-bank/features/version-control/implementation-sequence.md

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+## Critical Implementation Revisions  
+
+### Phase 1.1: Core Model Updates (2 Days)  
+1. Add lock fields to VersionBranch  
+2. Implement StateMachine base class  
+3. Extend HistoricalChangeMixin with structured diffs  
+
+### Phase 2.1: Manager Classes (3 Days)  
+```python  
+class LockManager(models.Manager):  
+    def get_locked_branches(self):  
+        return self.filter(lock_status__isnull=False)  
+
+class StateMachine:  
+    def __init__(self, workflow):  
+        self.states = workflow['states']  
+        self.transitions = workflow['transitions']  
+```  
+
+### Phase 3.1: Security Backports (1 Day)  
+- Add model clean() validation  
+- Implement permission check decorators