Significant work done porting to headless engine

procedural/src/engine/support/routes-generator_external.md

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+# External Dependencies for routes-generator.js
+
+The refactored `routes-generator.js` module requires the following external dependencies to be imported:
+
+## Utility Functions
+- `dist2` - Distance calculation function
+- `findPath` - Pathfinding algorithm function
+- `findCell` - Cell lookup function by coordinates
+- `rn` - Number rounding utility
+- `ra` - Random array element selection
+- `rw` - Weighted random selection
+- `getAdjective` - Name transformation utility
+
+## External Libraries
+- `Delaunator` - Delaunay triangulation library for Urquhart edge calculation
+
+## Data Dependencies
+- `biomesData` - Object containing biome information with habitability data
+
+## Grid Data
+- `grid` - Grid object containing temperature data for cells
+
+These dependencies should be passed through a `utils` object parameter that contains:
+```javascript
+{
+  dist2,
+  findPath,
+  findCell,
+  rn,
+  ra,
+  rw,
+  getAdjective,
+  Delaunator,
+  biomesData
+}
+```