Rework story engine flow and reorganize project docs

vite.config.ts

@@ -29,6 +29,9 @@ export default defineConfig(({mode}) => {
       // HMR is disabled in AI Studio via DISABLE_HMR env var.
       // Do not modify; file watching is disabled to prevent flickering during agent edits.
       hmr: process.env.DISABLE_HMR !== 'true',
+      watch: {
+        ignored: ['**/dist/**', '**/dist_check/**', '**/dist_check_final/**', '**/dist_check_monster_position/**'],
+      },
     },
   };
 });