Pixel art style coarser: 270 world rows

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

src/main.rs

@@ -987,7 +987,7 @@ async fn main() {
         // pixel look: the interface on a virtual screen whose pixels are whole parts of the world's
         let rows = settings::pixel_rows(app.settings.pixel_rows);
         // the interface needs room: the smallest whole multiple of the world's rows with at least
-        // 900 rows (360 -> 1080), on a desktop and on a touch screen alike (a phone has about
+        // 900 rows (270 -> 1080), on a desktop and on a touch screen alike (a phone has about
         // 1080 device rows in landscape; a smaller screen draws in device pixels)
         let need: u32 = 900;
         // measured on the shorter side: upright (portrait) the width gets those pixels and the