Replace battle maps 41 and 42 with hand-painted assets

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

@@ -2,7 +2,7 @@
 
 ## Scope
 
-The first forty campaign battles now use the same hand-painted tactical map pipeline. The renderer still reads the original scenario tile coordinates and battle logic; only the map texture asset changes from flat/vector map art to low-contrast raster terrain.
+The first forty-two campaign battles now use the same hand-painted tactical map pipeline. The renderer still reads the original scenario tile coordinates and battle logic; only the map texture asset changes from flat/vector map art to low-contrast raster terrain.
 
 ## Art Direction
 
@@ -15,7 +15,8 @@ The first forty campaign battles now use the same hand-painted tactical map pipe
 
 - 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.
+- Very large maps can use a 176px tile target through `VERY_LARGE_MAP_TILE_SIZE` when WebP encoding or browser memory pressure becomes the limiting factor.
+- Re-evaluate the tile target before a generated map's longest edge approaches roughly 16,384px at 192px per tile.
 - Use `--tile-size` only for controlled comparisons; commit the selected production size in the map config.
 
 ## Generator
@@ -64,6 +65,8 @@ python scripts/generate-handpaint-map-sample.py --map thirty-seventh --webp-qual
 python scripts/generate-handpaint-map-sample.py --map thirty-eighth --webp-quality 90
 python scripts/generate-handpaint-map-sample.py --map thirty-ninth --webp-quality 90
 python scripts/generate-handpaint-map-sample.py --map fortieth --webp-quality 90
+python scripts/generate-handpaint-map-sample.py --map forty-first --webp-quality 90
+python scripts/generate-handpaint-map-sample.py --map forty-second --webp-quality 90
 ```
 
 Comparison example:
@@ -114,6 +117,8 @@ python scripts/generate-handpaint-map-sample.py --map thirtieth --tile-size 192
 - `src/assets/images/battle/thirty-eighth-battle-map.webp`
 - `src/assets/images/battle/thirty-ninth-battle-map.webp`
 - `src/assets/images/battle/fortieth-battle-map.webp`
+- `src/assets/images/battle/forty-first-battle-map.webp`
+- `src/assets/images/battle/forty-second-battle-map.webp`
 
 ## QA Outputs
 
@@ -195,5 +200,9 @@ python scripts/generate-handpaint-map-sample.py --map thirtieth --tile-size 192
 - `docs/thirty-ninth-battle-map-handpaint-preview.png`
 - `docs/fortieth-battle-map-handpaint-before-after.png`
 - `docs/fortieth-battle-map-handpaint-preview.png`
+- `docs/forty-first-battle-map-handpaint-before-after.png`
+- `docs/forty-first-battle-map-handpaint-preview.png`
+- `docs/forty-second-battle-map-handpaint-before-after.png`
+- `docs/forty-second-battle-map-handpaint-preview.png`
 
 Browser screenshots are saved per verification run after build/deploy.