# fix(world): preserve LangGraph assistant config
## Summary
- restore the World demo's browser-supplied OpenAI key under
`assistantConfig`
- preserve the behavior of the authoritative legacy World commit
- add a dependency-free migration contract test
## Verification
- rebased cleanly onto current `main` at
`c2abbea9cf6a48c22b1dcd19e9dc469d5cfd458f`
- verified the authoritative legacy source still uses `assistantConfig`
at `markmdev/copilotkit-world@7a27a37b628b9e339d1284ec42382008e67884f5`
- verified `@ag-ui/langgraph@0.0.7` declares, stores, and merges
`assistantConfig`
- regression check against current `main` failed for the expected
missing-`assistantConfig` reason; the branch's dependency-free Node test
passed (`1/1`)
- `oxfmt --write` plus `oxfmt --check` passed on both changed files
- Nx reported no affected lint targets; direct `oxlint` completed with
`0` errors and one pre-existing `NextRequest` type-import warning on the
unchanged import line
- root dependency bootstrap passed with the repository-pinned pnpm
`10.33.4` and `--frozen-lockfile --ignore-scripts`
- `nx run @copilotkit/runtime-client-gql:build` and its 13 dependency
builds passed; this does not make that package resolvable from the
independently managed nested ChatKit Studio workspace
- exact-base and branch World typechecks used the same pnpm `9.15.0`
provisioning: base reports seven diagnostics, branch reports six, and
the branch-only diagnostic count is zero
- the removed base diagnostic is the changed route's invalid `config`
property; all six remaining diagnostics are identical current-`main`
errors in unchanged `page.tsx`, `useCountryData.ts`, and
`countryData.ts`
- both production builds compiled the optimized application source; base
then failed on the invalid `config`, while the branch advanced past the
changed route and stopped on the pre-existing undeclared
`@copilotkit/runtime-client-gql` import
- Python agent compilation passed
- worktree is clean; commit `a25941f9017fcd2a0a8e7660fe768c69cfaa28b6`
changes only the World route and its migration contract test
## Existing baseline debt
The branch introduces no type or production-build regression and removes
the route error it targets. Six unrelated current-`main` type
diagnostics remain:
```text
src/app/page.tsx(14,42): error TS2307: Cannot find module '@copilotkit/runtime-client-gql'
src/hooks/useCountryData.ts(2,50): error TS2307: Cannot find module 'geojson'
src/hooks/useCountryData.ts(4,51): error TS2307: Cannot find module 'topojson-specification'
src/hooks/useCountryData.ts(32,27): error TS2345: Argument of type 'unknown' is not assignable to parameter of type 'string'.
src/hooks/useCountryData.ts(43,12): error TS7006: Parameter 'country' implicitly has an 'any' type.
src/utils/countryData.ts(1,40): error TS2307: Cannot find module 'geojson'
```
The nested ChatKit Studio frozen install also reproduces the separate
current-`main` Playground importer drift covered by D006. D007 no longer
changes `package.json`, so it does not duplicate that lockfile fix.
Legacy source: `markmdev/copilotkit-world` at
`7a27a37b628b9e339d1284ec42382008e67884f5`.
Replace eslint and prettier with oxlint and oxfmt for faster linting
and formatting across the monorepo. Remove all eslint and prettier
configs, dependencies, and related packages. Add .oxlintrc.json and
.oxfmtrc.json for the new tooling. Update CI workflows and lefthook
hooks accordingly. Reformat codebase with oxfmt.
https://claude.ai/code/session_01GMkSf29p78HuMR1mbXn8He
Run prettier on ~1,865 files across examples/ to match the monorepo's
formatting standards. These files were imported as-is from standalone
repos that used different prettier configs.
SVG files are text-based XML averaging ~218 bytes each. LFS tracking
adds per-file HTTP fetch overhead with no storage benefit, suppresses
git diff output, and breaks tutorial clone instructions that use
GIT_LFS_SKIP_SMUDGE=1 (users get LFS pointers instead of icons).
Alem Tuzlak