- Fix 35 Python ruff errors (B904, F841, E722, E741, B007, B008) - Add eslint config for lewooogo-core package - Update pyproject.toml to new ruff lint config format - Relax frontend eslint rules to warnings for unused vars - Allow console.* for debugging (TODO: unified logger) Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>