feat(city): style pack, tileset and lighting

Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>

crates/city/src/main.rs

@@ -6,6 +6,7 @@
 mod anim;
 mod app;
 mod cli;
+mod render;
 mod save;
 mod screens;
 mod term;