Set up pre-commit framework with ruff (backend) and ESLint/Prettier/tsc
(frontend) hooks to catch issues locally before CI. Auto-format all
frontend files with Prettier to comply with the new check.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
Backend: PATCH/DELETE genlocke, POST/DELETE legs with order
re-numbering. Frontend: admin list page with status filter,
detail page with inline editing, legs table, and stats display.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
