Resolve canonical previous-session artifact sources from prepared previous cache

internal/stage/analyze.go

@@ -632,13 +632,21 @@ func resolveScriptoriumInput(
 ) (string, bool, *artifacts.ResolvedSessionArtifact, error) {
 	source := strings.TrimSpace(inputCfg.Source)
 	if artifacts.IsPreviousSessionArtifactSource(source) {
-		if inputCfg.Required {
-			return "", false, nil, fmt.Errorf(
-				"required previous-session input source %q is unavailable; run narratio run-stage --force prepare",
-				source,
-			)
+		resolved, err := artifacts.ResolvePreviousSessionArtifactWithCatalog(paths, m, source, runtimeCatalog)
+		if err == nil {
+			copy := resolved
+			return resolved.Path, true, &copy, nil
 		}
-		return "", false, nil, nil
+		if errors.Is(err, artifacts.ErrSessionArtifactNotFound) {
+			if inputCfg.Required {
+				return "", false, nil, fmt.Errorf(
+					"required previous-session input source %q is unavailable; run narratio run-stage --force prepare",
+					source,
+				)
+			}
+			return "", false, nil, nil
+		}
+		return "", false, nil, err
 	}
 	switch source {
 	case "previous_session_artifact":