fix(wasm): sort call targets by confidence before emit to match native engine

Author: carlos-alm

src/domain/graph/builder/stages/build-edges.ts

@@ -1107,6 +1107,19 @@ function buildFileCallEdges(
       }
     }
 
+    // Sort targets by confidence descending before emitting edges.
+    // For multi-target calls with duplicate (source_id, target_id) pairs the
+    // stored confidence depends on which duplicate is processed last — sorting
+    // here guarantees the highest-confidence target wins on dedup, matching the
+    // native engine's sort_targets_by_confidence call in build_edges.rs.
+    if (targets.length > 1) {
+      targets = [...targets].sort(
+        (a, b) =>
+          computeConfidence(relPath, b.file, importedFrom ?? null) -
+          computeConfidence(relPath, a.file, importedFrom ?? null),
+      );
+    }
+
     for (const t of targets) {
       const edgeKey = `${caller.id}|${t.id}`;
       if (t.id !== caller.id) {