Add startup warning

Author: sjmiller609

cmd/api/api/cp.go

@@ -419,4 +419,3 @@ func (s *ApiService) handleCopyFrom(ctx context.Context, ws *websocket.Conn, ins
 	}
 	return bytesReceived, nil
 }
-

cmd/api/main.go

@@ -23,6 +23,7 @@ import (
 	"github.com/onkernel/hypeman/cmd/api/api"
 	"github.com/onkernel/hypeman/cmd/api/config"
 	"github.com/onkernel/hypeman/lib/guest"
+	"github.com/onkernel/hypeman/lib/hypervisor/qemu"
 	"github.com/onkernel/hypeman/lib/instances"
 	mw "github.com/onkernel/hypeman/lib/middleware"
 	"github.com/onkernel/hypeman/lib/oapi"
@@ -125,6 +126,11 @@ func run() error {
 	}
 	logger.Info("KVM access verified")
 
+	// Check if QEMU is available (optional - only warn if not present)
+	if _, err := (&qemu.Starter{}).GetBinaryPath(nil, ""); err != nil {
+		logger.Warn("QEMU not available - QEMU hypervisor will not work", "error", err)
+	}
+
 	// Validate log rotation config
 	var logMaxSize datasize.ByteSize
 	if err := logMaxSize.UnmarshalText([]byte(app.Config.LogMaxSize)); err != nil {