Fix structural phase 2 validation: Clamp all scores rigorously within (0, 1) bounds exclusively

Fix final OpenEnv validator compliance: inference stdout format, Dockerfile deps, API vars, and grader bounds

Fix action_type validation in parse_action for robustness

fix: lint/type issues and ensure mypy/ruff pass

chore: prepare Round-1 OpenEnv submission (validator, evaluator, tests, CI, docs)

Initial Commit