chore: enhance golangci-lint configuration and clean up error handling

- Added new linters for the examples directory to improve code quality checks.
- Updated output formatting to direct lint results to stdout for better visibility.
- Cleaned up comments related to error handling in various files for clarity and consistency.

server/soap/handler.go

@@ -55,7 +55,6 @@ func (h *Handler) ServeHTTP(w http.ResponseWriter, r *http.Request) {
 
 		return
 	}
-	//nolint:errcheck // Close error is not critical for cleanup
 	_ = r.Body.Close()
 
 	// Extract action from raw XML first (before parsing)