Fix storage root fallback for references

tests/storage-root-resolution-test.mjs

@@ -0,0 +1,30 @@
+import assert from "node:assert/strict";
+import { buildFindings, createFileRecord } from "../scripts/core/finding-engine.js";
+import { createFileLocator } from "../scripts/core/path-utils.js";
+
+const files = [
+  createFileRecord(createFileLocator("data", "canvas/background_paper_16x9_4k.webp"), 1234)
+];
+
+const references = [
+  {
+    sourceType: "world-document",
+    sourceScope: { ownerType: "world", ownerId: "demo-world", systemId: "demo-system", subtype: "scenes" },
+    sourceLabel: "Scene demo",
+    rawValue: "canvas/background_paper_16x9_4k.webp",
+    normalized: {
+      ...createFileLocator("public", "canvas/background_paper_16x9_4k.webp"),
+      targetKind: "local-file"
+    }
+  }
+];
+
+const findings = buildFindings({ files, references });
+
+assert.equal(
+  findings.some(finding => finding.kind === "broken-reference" && finding.target.locator === "public:canvas/background_paper_16x9_4k.webp"),
+  false,
+  "references should be remapped to the existing storage root before reporting a broken target"
+);
+
+console.log("storage-root-resolution-test: ok");