gods-eye-view/docs/CODE-BOUNDARIES.md

Formatting and component boundaries

Run npm run format to format the files in scripts/format-scope.json and npm run format:check to check that same list without writing. CI checks the entire adopted list on Linux and Windows. Prettier is pinned in the development dependencies; use the installed version so local and CI output agree. The shared configuration specifies two spaces, single quotes, semicolons and LF endings.

Add new reusable modules and their tests to the list as they are extracted. Keep mechanical formatting in its own commit after behavior is stable. Existing source-text regression assertions still apply; investigate failures and preserve their behavioral coverage when a move or line wrap changes a tested shape. Files outside the list retain their surrounding style until deliberately adopted. Generated output, local configuration, browser evidence and bundled datasets are excluded. The formatter validates every entry before writing any file.

Current component ownership

Surface	Owns	Receives from its caller
gods-eye-view/infrastructure	Datacenter/dam definitions and fresh layer construction	Context, overlay and render operations
gods-eye-view/infrastructure/geojson	Data loading, Cesium entities, selection handling and resource cleanup	A viewer and those same operations
gods-eye-view/infrastructure/lod	Pure visibility budgets and selection policy	Position/visibility records and camera measurements
src/data/localGeojson.js	Standalone compatibility wiring	The application's existing shared services
src/main.js, src/editions/local/ and vite.config.js	Standalone startup and local Node services	Local configuration

The scoped package exports are browser source modules. Use their documented exports instead of importing standalone startup or reaching into internal files. The application owns the viewer, context store, overlay host and render scheduler; layers use the supplied callbacks. See the infrastructure contract.

npm run check:boundaries builds every declared package export, with app Vite configuration disabled. scripts/package-boundaries.json lists each export's component, owned modules and external runtime dependencies. A new export must be classified. Imports outside the declared modules fail, including unused and literal dynamic imports. Cesium stays external so the consuming application supplies the same compatible instance as its viewer. Existing consumer tests also check import-time inactivity and asset URLs under a non-root base.

These checks cover the declared exports, not every import in the application. They check build-time imports, not arbitrary runtime-generated module URLs. Keep runtime module discovery out of these exports. When extracting another component, add its ownership and consumer tests together. Node services must use separate entry points and their own checks when they become reusable; importing them into a browser component is not supported. No Node service is exported yet.

gods-eye-view/application owns construction order, startup state, cancellation and disposal of caller-supplied components. Its only owned module is src/app/application.js. gods-eye-view/application/viewer separately owns the standard Cesium viewer configuration in src/app/viewer.js; Cesium stays external. Neither export imports standalone UI, layers, tools or configuration. See application construction for the contracts and current limits.

UI panels and individual source adapters remain future extractions. They should become smaller modules with explicit lifecycle owners as their callers migrate.