Knacky
393b6ed416
fix(backend): sprint 3 post-review — migration nullable + dead code + tactic names + tests
- Migration 0003: enforce techniques NOT NULL via batch_alter_table (AC-13.1 DDL spec)
- Migration 0003: remove unused _sims table proxy and orphaned column/table imports
- mitre.py: rename _TACTIC_NAMES → TACTIC_NAMES (public); add all 12 correct display names
- mitre.py: use TACTIC_NAMES dict in _build_matrix() to fix "Command And Control" → "Command and Control"
- test_mitre.py: add T1071 fixture entry under command-and-control; assert tactic_name lowercase "and"
- test_simulations_techniques.py: real Alembic round-trip test asserting techniques NOT NULL after upgrade