Add version flag to MCP server (#2)

* Add --version flag support to MCP server

- Import __version__ from whoismcp package
- Check for --version or -v flag before starting server
- Print version and exit when flag is present
- Tested with both --version and -v flags

* Bump version v0.4.0 -> v0.4.1

---------

Co-authored-by: Claude <noreply@anthropic.com>

Author: elgertam

src/whoismcp/__init__.py

@@ -5,7 +5,7 @@
 using both traditional Whois and modern RDAP protocols.
 """
 
-__version__ = "0.4.0"
+__version__ = "0.4.1"
 __author__ = "Whois MCP Server"
 __email__ = "server@example.com"
 

src/whoismcp/mcp_server.py

@@ -12,6 +12,7 @@
 
 import structlog
 
+from whoismcp import __version__
 from whoismcp.config import Config
 from whoismcp.mcp_core import MCPServerCore
 
@@ -92,6 +93,10 @@ async def run(self) -> None:
 
 def main() -> None:
     """Main entry point."""
+    # Check for --version flag
+    if len(sys.argv) > 1 and sys.argv[1] in ("--version", "-v"):
+        print(f"whoismcp-server {__version__}")
+        sys.exit(0)
 
     async def run_server():
         server = MCPServer()