fix: use published ts-broadcasting package instead of broken link

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

Author: glennmichael123

bun.lock

@@ -111,7 +111,7 @@
     "bun-plugin-stx": "workspace:*",
     "bunfig": "^0.15.6",
     "stx-router": "workspace:*",
-    "ts-broadcasting": "link:ts-broadcasting",
+    "ts-broadcasting": "^0.0.3",
     "ts-syntax-highlighter": "^0.2.1"
   }
 }