Added a new JSON public schema as the default output artifact

internal/artifact/transcript.go

@@ -57,6 +57,31 @@ func FromMerged(cfg config.Config, merged model.MergedTranscript) schema.Transcr
 	}
 }
 
+// DefaultFromMerged converts the internal merged transcript model into the
+// compact default public serialized output contract.
+func DefaultFromMerged(cfg config.Config, merged model.MergedTranscript) schema.DefaultTranscript {
+	segments := make([]schema.DefaultSegment, len(merged.Segments))
+	for index, segment := range merged.Segments {
+		segments[index] = schema.DefaultSegment{
+			ID:         segment.ID,
+			Start:      segment.Start,
+			End:        segment.End,
+			Speaker:    segment.Speaker,
+			Text:       segment.Text,
+			Categories: append([]string(nil), segment.Categories...),
+		}
+	}
+
+	return schema.DefaultTranscript{
+		Metadata: schema.DefaultMetadata{
+			Application:  ApplicationName,
+			Version:      buildinfo.Version,
+			OutputSchema: config.OutputSchemaDefault,
+		},
+		Segments: segments,
+	}
+}
+
 // MinimalFromMerged converts the internal merged transcript model into the
 // compact public serialized output contract.
 func MinimalFromMerged(cfg config.Config, merged model.MergedTranscript) schema.MinimalTranscript {
@@ -85,8 +110,12 @@ func MinimalFromMerged(cfg config.Config, merged model.MergedTranscript) schema.
 // runtime-selected public output contract.
 func SelectedFromMerged(cfg config.Config, merged model.MergedTranscript) any {
 	switch cfg.OutputSchema {
+	case config.OutputSchemaDefault:
+		return DefaultFromMerged(cfg, merged)
 	case config.OutputSchemaMinimal:
 		return MinimalFromMerged(cfg, merged)
+	case config.OutputSchemaSeriatim:
+		return FromMerged(cfg, merged)
 	default:
 		return FromMerged(cfg, merged)
 	}