updated inference.py

added automatic attack button in UI and improved roleplay

refactor(models): clean up imports and add module docstring

feat(models): add StepResult and ResetResponse models

feat(models): add EpisodeState model for GET /state response

feat(models): add RedTeamObservation model with all scoring fields

feat(models): add framing sanitizer validator to strip injection patterns

feat(models): add AttackAction model with intensity and framing fields

feat(models): add TargetCategory enum with 5 target categories

feat(models): add StrategyType enum with all 7 attack strategies