Automated balance runs; AI masters keep growing, mine more, defend with the rally flag and spells; Builder talent stronger

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

src/main.rs

@@ -30,6 +30,7 @@ mod props;
 mod research;
 mod rival;
 mod rogues;
+mod balance;
 mod talents;
 mod weather;
 mod names;