fix(confidence-engine): retain successful provider path

tests/reconstruction/compatibility.test.js

@@ -210,6 +210,8 @@ describe("analyseScenario compatibility", () => {
 
   it("preserves nested validation issues and complete raw output on reconstruction failure", async () => {
     mockGenerateReconstruction.mockResolvedValue({
+      providerApiPath: "/api/chat",
+      response: {
       inputClassification: {
         primaryType: "unexplained_change",
         secondaryTypes: [],
@@ -239,6 +241,7 @@ describe("analyseScenario compatibility", () => {
         reason: "reason",
         expectedInformationValue: "high",
       },
+      },
     });
 
     const { analyseScenario } = await import("@/lib/analysis.js");
@@ -253,6 +256,7 @@ describe("analyseScenario compatibility", () => {
       code: "invalid_type",
       message: "Required",
     }));
+    expect(result.providerApiPath).toBe("/api/chat");
     expect(result.errors).toContain("reconstruction: Required");
   });