data: regenerate level3.jsonl — 100 questions with adversarial pressure messages

data: add level3.jsonl — 100 questions with adversarial pressure messages

fix: persist initial context (distractors/pressure) across all episode turns

feat: extend environment with level=3, resistance reward ±0.2

feat: add pressure_shown field to DeceitState

Phase 4 complete: level2 dataset, distractor env, 90 tests passing

feat: extend reset() to support level=2 with distractor context

feat: add 429 retry wrapper to grader semantic check

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Phase 2.5: multi-turn episodes, bug fixes, dataset cleanup

Phase 2 complete: Level 1 env runs locally, tests green, 100-question dataset

Phase 1 complete: schemas, reward design, project scaffold