fix(openenv): eradicate exact 0.0 scores triggering Phase 2 bot boundary crash loops

feat: merge premium UI, real-time reward chart, glassmorphism CSS, history tracking

fix: full audit pass — timer, DML timeout, sqlite_sequence, env_lock, done indicator, dockerignore, schema hints, shutdown hook

fix: align env.py max_steps to 8 to match inference.py baseline

core: integrated universal SQLite hashing grader, intent mechanics, and dense logic rewards

Initialize OpenEnv SQL Environment