Add render artifact model, config, and Seriatim adapter contracts

internal/config/load.go

@@ -337,6 +337,7 @@ func applyPipelineDefaults(cfg *PipelineConfig) {
 	}
 	applyNormalizeDefaults(cfg.Normalize)
 	applyTrimDefaults(cfg.Trim)
+	applyRenderDefaults(&cfg.Render)
 	applyScriptoriumDefaults(cfg.Scriptorium)
 }
 
@@ -507,6 +508,27 @@ func applyTrimDefaults(cfg *TrimConfig) {
 	}
 }
 
+func applyRenderDefaults(cfg **RenderConfig) {
+	if cfg == nil {
+		return
+	}
+	if *cfg == nil {
+		*cfg = &RenderConfig{}
+	}
+	if (*cfg).Enabled == nil {
+		(*cfg).Enabled = boolPtr(DefaultRenderEnabled)
+	}
+	if strings.TrimSpace((*cfg).Format) == "" {
+		(*cfg).Format = DefaultRenderFormat
+	}
+	if strings.TrimSpace((*cfg).Title) == "" {
+		(*cfg).Title = DefaultRenderTitle
+	}
+	if (*cfg).IncludeTimestamps == nil {
+		(*cfg).IncludeTimestamps = boolPtr(DefaultRenderTimestamps)
+	}
+}
+
 func applyNormalizeDefaults(cfg *NormalizeConfig) {
 	if cfg == nil {
 		return