Weather above ground: rain puts out fires, fog shortens sight, storms strike with lightning

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

src/main.rs

@@ -31,6 +31,7 @@ mod research;
 mod rival;
 mod rogues;
 mod talents;
+mod weather;
 mod render3d;
 mod rooms;
 mod save;