Tune large battle map render resolution

docs/battle-map-terrain-atlas-pipeline.md

@@ -11,9 +11,16 @@ The first thirty campaign battles now use the same hand-painted tactical map pip
 - Roads, forests, rivers, camps, villages, cliffs, and forts should be recognizable by silhouette and texture, not by high saturation.
 - The grid remains subtle and embedded in the paint grade, so it helps targeting without becoming the main visual layer.
 
+## Resolution Policy
+
+- Battles 1-25 keep the original 224px hand-painted tile target.
+- Large maps starting at battle 26 use a 192px tile target through `LARGE_MAP_TILE_SIZE` in the generator.
+- Re-evaluate the tile target before a generated map's longest edge exceeds roughly 16,384px at 192px per tile.
+- Use `--tile-size` only for controlled comparisons; commit the selected production size in the map config.
+
 ## Generator
 
-`scripts/generate-handpaint-map-sample.py` reads terrain and unit positions from `src/game/data/scenario.ts`, then outputs a WebP map and documentation previews.
+`scripts/generate-handpaint-map-sample.py` reads terrain and unit positions from `src/game/data/scenario.ts`, then outputs a WebP map and documentation previews. Map configs can set `tile_size`; otherwise the default is 224px.
 
 Example:
 
@@ -49,6 +56,12 @@ python scripts/generate-handpaint-map-sample.py --map twenty-ninth --webp-qualit
 python scripts/generate-handpaint-map-sample.py --map thirtieth --webp-quality 90
 ```
 
+Comparison example:
+
+```powershell
+python scripts/generate-handpaint-map-sample.py --map thirtieth --tile-size 192 --out tmp\thirtieth-battle-map-192-test.webp --comparison tmp\thirtieth-battle-map-192-test-before-after.png --preview tmp\thirtieth-battle-map-192-test-preview.png --webp-quality 90
+```
+
 ## Current Assets
 
 - `src/assets/images/battle/first-battle-map.webp`