- Replace non-null assertions in modify tool tests
- Use expectDefined and getNodeOrThrow for graph, proxy, and style-run lookups
- Validate check and affected modify tool tests
- Remove stale imports and unused locals from split engine and e2e tests
- Drop the targeted no-unused-vars test allowances
- Keep check and affected test suites warning-free
- Configure oxfmt custom import groups for workspace, app, package, and test aliases
- Keep type imports grouped with their matching source category instead of one global tail group
- Expand the format script to cover formatter config, Vite files, and scripts
- Merge structural lint rules into oxlint.json and remove the second config file
- Add #tests/* path aliases and rewrite deep test helper imports
- Ban new deep parent-relative imports through the shared lint config
- Move tools.test.ts into focused registry, create, modify, read, and structure files
- Add shared tool test helpers for graph setup and tool lookup
- Preserve all 38 tool tests after the split
