Implement Maximum Robustness for /reset to bypass body validation errors

Allow /reset params via body or query; add tests

test: add submission tests for app middleware and inference logic to fix coverage

chore : added testcase

Allow test env and TestClient host

Skip DB init in TESTING; add reset_db

feat: finalize CodeLens. rebranding and production environment polish

test: expand test suite to 150+ tests and 80%+ coverage

feat: add SQLite persistence for episodes, results, and leaderboard via SQLModel

Revert "feat: add API hardening, rate limiting, and resource management"

feat: harden API with rate limiting, optional API-key auth, episode TTL, and pagination

feat(core): implement Pydantic v2 models and 30 synthetic scenarios

feat: OpenEnv spec compliance + blast radius enrichment (0→10)

Add tests/test_graders.py

Add tests/test_env.py

Add tests/test_api.py