v2.0: multi-step episodes, procedural bugs, semantic grading, sessions, 71 tests

fix: add name/difficulty to tasks, per-task [START]/[END] logs for validator

fix: stateful endpoints + score clamping for validator pass

fix: reward_range changed to (0.05, 0.95) to satisfy strict bounds

fix: proper openenv.yaml with spec_version and task graders

fix: simplify openenv.yaml to match passing format

fix: correct grader paths for validator

final fix: correct grader import to task module

fix: correct grader import path

Fix all things

Fix all things

fix grader import paths in openenv.yaml

Fix all things

fix: full grader paths

fix: use module path format for graders in openenv.yaml

fix: correct openenv.yaml type and runtime for validator

fix openenv.yaml

fix: expand task definitions with grader info for validator

fix: add endpoint and tasks to openenv.yaml

complete bug triage openenv environment