Finish render rollout with markdown publish defaults, analyze guidance, and docs updates

internal/config/scriptorium_test.go

@@ -200,6 +200,21 @@ func TestScriptoriumLoadAndValidate(t *testing.T) {
         transcript:
           source: narratio.transcript.final_trimmed
           required: true
+`,
+		},
+		{
+			name: "markdown built in artifact source is accepted",
+			scriptoriumYAML: `scriptorium:
+  binary: scriptorium
+  artifacts:
+    session_recap:
+      enabled: true
+      prompt_id: dnd.session_recap
+      output_path: artifacts/session_recap.md
+      inputs:
+        transcript_markdown:
+          source: narratio.transcript.final_markdown
+          required: true
 `,
 		},
 		{