chore: redeploy with clean structure (generators/, no dead code)

refactor: drivers→generators, v2_reward→reward + cleanup

feat: SOF/hearsay/adverse_possession generators + JudgeEnvironment server

feat: SaraGenerator (procedural), expanded UCC/diversity/mens_rea/consideration scenarios

cleanup: remove server/core/base_driver.py

cleanup: remove server/core/reward.py

feat: 9 generators, 35 tasks, flip balance, unit tests

feat: question pools (axe 1) + SARADriver (axe 2)

refactor: multi-turn Judge Agent — diversity + UCC generators

refactor: multi-turn Judge Agent — diversity + UCC generators

refactor: multi-turn Judge Agent — diversity + UCC generators

refactor: multi-turn Judge Agent — diversity + UCC generators

fix: SUPPORTS_CONCURRENT_SESSIONS=True

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