Bubble up initialization message

src/claude_code_sdk/client.py

@@ -185,6 +185,31 @@ class ClaudeSDKClient:
         if not self._query:
             raise CLIConnectionError("Not connected. Call connect() first.")
         await self._query.interrupt()
+    
+    async def get_server_info(self) -> dict[str, Any] | None:
+        """Get server initialization info including available commands and output styles.
+        
+        Returns initialization information from the Claude Code server including:
+        - Available commands (slash commands, system commands, etc.)
+        - Current and available output styles
+        - Server capabilities
+        
+        Returns:
+            Dictionary with server info, or None if not in streaming mode
+            
+        Example:
+            ```python
+            async with ClaudeSDKClient() as client:
+                info = await client.get_server_info()
+                if info:
+                    print(f"Commands available: {len(info.get('commands', []))}")
+                    print(f"Output style: {info.get('output_style', 'default')}")
+            ```
+        """
+        if not self._query:
+            raise CLIConnectionError("Not connected. Call connect() first.")
+        # Return the initialization result that was already obtained during connect
+        return getattr(self._query, '_initialization_result', None)
 
     async def get_server_info(self) -> dict[str, Any] | None:
         """Get server initialization info including available commands and output styles.