Reconcile the memory technique family

[fkautz]

Summary

• consolidate SAF-T1702 into canonical SAF-T1204 while retaining its permanent compatibility ID and evidence packet
• carry Lateral Movement as a second tactic on SAF-T1204
• retain SAF-T2106 as the general vector-store write-and-retrieval boundary
• classify SAF-T3001 as the trigger-conditioned RAG-backdoor specialization of SAF-T2106
• reconcile framework relationships, profile counts, detection coverage, traceability ledgers, and generated catalog entries

Validation

• python3 -m unittest discover -s scripts -p 'test_*.py'
• python3 scripts/validate-technique-research.py --all
• python3 scripts/validate-framework-model.py
• python3 scripts/generate-technique-catalog.py --check
• python3 scripts/validate-detection-registry.py
• git diff --check