Add detached source lookup to results and errors

internal/engine/load.go

@@ -119,6 +119,16 @@ func (r *Inspection) Sources() []SourceInfo {
 	return cloneSourceInfos(r.sources)
 }
 
+// Source returns a detached record for an acquired source in this load. IDs are
+// local to the load; the lookup does not reacquire the source or access the
+// filesystem. Empty or unknown IDs return false.
+func (r *Inspection) Source(id string) (SourceInfo, bool) {
+	if r == nil {
+		return SourceInfo{}, false
+	}
+	return lookupSourceInfo(r.sources, id)
+}
+
 // SourceContext returns a passive filesystem view for an acquired source.
 // Unknown IDs and sources without a filesystem context return false.
 func (r *Inspection) SourceContext(id string) (ResourceContext, bool) {