feat: add schema command

We should probably serve this file in a short URL.

internal/cmd/schema.go

@@ -0,0 +1,33 @@
+package cmd
+
+import (
+	"encoding/json"
+	"fmt"
+
+	"github.com/charmbracelet/crush/internal/config"
+	"github.com/invopop/jsonschema"
+	"github.com/spf13/cobra"
+)
+
+var schemaCmd = &cobra.Command{
+	Use:    "schema",
+	Short:  "Generate JSON schema for configuration",
+	Long:   "Generate JSON schema for the crush configuration file",
+	Hidden: true,
+	RunE: func(cmd *cobra.Command, args []string) error {
+		reflector := jsonschema.Reflector{}
+		schema := reflector.Reflect(&config.Config{})
+
+		schemaJSON, err := json.MarshalIndent(schema, "", "  ")
+		if err != nil {
+			return fmt.Errorf("failed to marshal schema: %w", err)
+		}
+
+		fmt.Println(string(schemaJSON))
+		return nil
+	},
+}
+
+func init() {
+	rootCmd.AddCommand(schemaCmd)
+}