初版功能完成

internal/identity/path_windows.go

@@ -0,0 +1,27 @@
+//go:build windows
+
+package identity
+
+import (
+	"errors"
+	"path/filepath"
+
+	"remlink/internal/appdir"
+	"remlink/internal/model"
+)
+
+// DefaultPath returns the portable identity path beside the role executable.
+// Engineer and Site are shipped in different directories, so the common file
+// name cannot collide across the two package bodies.
+func DefaultPath(nodeType model.NodeType) (string, error) {
+	switch nodeType {
+	case model.NodeTypeEngineer, model.NodeTypeSite:
+		root, err := appdir.Executable()
+		if err != nil {
+			return "", err
+		}
+		return filepath.Join(root, "identity.json"), nil
+	default:
+		return "", errors.New("invalid Windows Node type")
+	}
+}