chore: remove four modules nothing in the app uses (#1403)

* chore: remove four modules nothing in the app uses

src/app/sourceSlot.js re-exported src/sources/sourceSlot.js, which every
caller imports directly. src/data/flowTiles.js and src/data/issPass.js were
reached only by their own tests. src/data/localGeojson.js wrapped
localGeojsonCore.js with the app's services, which the catalog already
passes itself. The local GeoJSON layer tests now build layers the way the
catalog does, so they keep covering localGeojsonCore.js; only the test of
the wrapper's own default host goes. Boundary lists, format scope and docs
drop the removed paths.

* docs: changelog for #1403

docs/CODE-BOUNDARIES.md

@@ -81,8 +81,6 @@ moves it. Do not label all ingestion modules platform-independent by filename.
 | --------------------------------------------------- | ------------------------------------------------------------------------------------------------------------------ |
 | `src/data/manager.js`                               | Lifecycle/panel compatibility and existing tests; normal assembly constructs lifecycle and presentation separately |
 | `src/data/<layer>.js`                               | Legacy default instances; new assembly calls layer factories with supplied sources                                 |
-| `src/data/localGeojson.js`                          | Infrastructure compatibility factories; catalog imports services from `src/app/localGeojsonServices.js` directly   |
-| `src/app/sourceSlot.js`                             | Re-export for direct callers/tests; portable slot ownership is `src/sources/sourceSlot.js`                         |
 | `src/app/sources.js`, `src/services/application.js` | Existing default/override API; current application construction supplies its own instances                         |
 | `server/providers/local.js`                         | Existing Node composition barrel and provider helper re-exports                                                    |
 

docs/CURRENT-STATE.md

@@ -4662,7 +4662,7 @@ current route throughout enabling, enabled, disabling, and uncertain lifecycle
 renders. Both routes preserve Radio power, playback, station, filter, and volume
 state.
 
-Bundled datasets live in `src/data/local_data/` with per-folder provenance READMEs; they are lazily loaded via `src/data/localGeojson.js` (Vite `?url` assets) when toggled on.
+Bundled datasets live in `src/data/local_data/` with per-folder provenance READMEs; they are lazily loaded via `src/data/localGeojsonCore.js` (Vite `?url` assets) when toggled on.
 
 A bundled dataset that fails to load is a broken install, not a blip, so it is
 never swallowed: `localGeojson.js` guards `response.ok`, reports `error` +

docs/INFRASTRUCTURE-LAYERS.md

@@ -53,9 +53,8 @@ Cesium installation shared with its viewer; it must not bundle separate copies.
 `gods-eye-view/infrastructure/geojson` exports the lower-level
 `createLocalGeoJsonLayer(options, services)` and existing infrastructure overlay
 helpers. `gods-eye-view/infrastructure/lod` exports the existing LOD policy helpers.
-The standalone app's `src/data/localGeojson.js` keeps its original single-argument
-factory and supplies its existing functions. Other consumers should use the package
-exports, which do not import standalone application globals.
+Consumers use the package exports, which do not import standalone application
+globals.
 
 Dataset files and source/license notices remain under `src/data/local_data/`.
 Their input counts are 4,351 datacenter features and 704 dam features. Cesium may