fix: correctly access getSocketIO from dynamic import

The dynamic import returns a module namespace object, so we need to
access socketServerModule.getSocketIO() rather than treating the
module itself as the function.

Simplified the wrapper to directly cache and use the module, checking
that getSocketIO exists before calling it.

🤖 Generated with [Claude Code](https://claude.com/claude-code)

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

apps/web/src/lib/socket-io.ts

@@ -6,34 +6,35 @@
 
 import type { Server as SocketIOServerType } from 'socket.io'
 
-// Import the socket server module (this is safe because it's only used in Node.js context)
-let socketServer: { getSocketIO: () => SocketIOServerType | null } | null = null
-
-// Lazy-load the socket server module (only works on server-side)
-async function loadSocketServer() {
-  if (typeof window !== 'undefined') {
-    // Client-side: return null
-    return null
-  }
-
-  if (!socketServer) {
-    try {
-      // Dynamic import to avoid bundling issues
-      socketServer = await import('../../socket-server')
-    } catch (error) {
-      console.error('[Socket IO] Failed to load socket server:', error)
-      return null
-    }
-  }
-
-  return socketServer
-}
+// Cache for the socket server module
+let socketServerModule: any = null
 
 /**
  * Get the socket.io server instance
  * Returns null if not initialized or if called on client-side
  */
 export async function getSocketIO(): Promise<SocketIOServerType | null> {
-  const server = await loadSocketServer()
-  return server ? server.getSocketIO() : null
+  // Client-side: return null
+  if (typeof window !== 'undefined') {
+    return null
+  }
+
+  // Lazy-load the socket server module on first call
+  if (!socketServerModule) {
+    try {
+      // Dynamic import to avoid bundling issues
+      socketServerModule = await import('../../socket-server')
+    } catch (error) {
+      console.error('[Socket IO] Failed to load socket server:', error)
+      return null
+    }
+  }
+
+  // Call the exported getSocketIO function from the module
+  if (socketServerModule && typeof socketServerModule.getSocketIO === 'function') {
+    return socketServerModule.getSocketIO()
+  }
+
+  console.warn('[Socket IO] getSocketIO function not found in socket-server module')
+  return null
 }