Implement artifact-level render command with Markdown output and update docs

internal/cli/render.go

@@ -0,0 +1,39 @@
+package cli
+
+import (
+	"github.com/spf13/cobra"
+
+	"gitea.maximumdirect.net/eric/seriatim/internal/config"
+	"gitea.maximumdirect.net/eric/seriatim/internal/render"
+)
+
+func newRenderCommand() *cobra.Command {
+	opts := config.RenderOptions{
+		Title:             config.DefaultRenderTitle,
+		IncludeTimestamps: true,
+	}
+
+	cmd := &cobra.Command{
+		Use:   "render",
+		Short: "Render a seriatim transcript artifact into human-readable output",
+		RunE: func(cmd *cobra.Command, args []string) error {
+			cfg, err := config.NewRenderConfig(opts)
+			if err != nil {
+				return err
+			}
+
+			return render.Run(cmd.Context(), cfg)
+		},
+	}
+
+	flags := cmd.Flags()
+	flags.StringVar(&opts.InputFile, "input-file", "", "input seriatim transcript artifact JSON file")
+	flags.StringVar(&opts.OutputFile, "output-file", "", "rendered output file path")
+	flags.StringVar(&opts.Format, "format", "", "output format (markdown)")
+	flags.StringVar(&opts.Title, "title", config.DefaultRenderTitle, "document title")
+	flags.BoolVar(&opts.IncludeTimestamps, "include-timestamps", true, "include segment timestamps")
+	flags.BoolVar(&opts.IncludeSegmentIDs, "include-segment-ids", false, "include segment IDs")
+	flags.BoolVar(&opts.IncludeMetadata, "include-metadata", false, "include artifact metadata")
+
+	return cmd
+}