GeoLeaf Core API - v3.0.0
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    AVG_TILE_SIZE_BYTES: number = ...

    Assumed size of one cached tile, in bytes, whenever no measurement is available.

    Single source of truth for the whole raster cache path: the calculator's estimateTileSize default and BOTH of metrics.ts's estimation branches (the unsampled >100k-tiles path and the sampled path when no HEAD returned a Content-Length) read this constant. Those three sites used to hold three literals — 25 KB, 25 KB and 15000 — for the same quantity in the same situation.

    The 25 KB figure is the empirical one, so it is the one that survived.

    ⚠️ Distinct from tile-math.ts's AVG_PBF_BYTES, which sizes VECTOR .pbf tiles.