fix(dashboard): complete the GraphEdge test fixture

Earlier review fix-up dropped the `as GraphEdge` cast but didn't add
the `direction` and `weight` fields, breaking `tsc -b`. Tests still
passed because vitest doesn't typecheck. Add the missing fields so
the dashboard build is green again.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

understand-anything-plugin/packages/dashboard/src/utils/__tests__/edgeAggregation.test.ts

@@ -6,6 +6,8 @@ const ce = (source: string, target: string, type: EdgeType = "calls"): GraphEdge
   source,
   target,
   type,
+  direction: "forward",
+  weight: 1,
 });
 
 describe("aggregateContainerEdges", () => {