fix: normalise compatible live reconstruction responses

tests/graph/orchestrator.test.js

@@ -46,6 +46,9 @@ function makeAnalysisResult(overrides = {}) {
       id: "q-1",
       question: "What denominator is being used for the complaint rate?",
     },
+    compatibilityApplied: false,
+    compatibilityChanges: [],
+    compatibilityWarnings: [],
     ...overrides,
   };
 }
@@ -171,6 +174,29 @@ describe("lib/graph/orchestrator startCase", () => {
     expect(result.selectedQuestion).toBeNull();
   });
 
+  it("includes compatibility diagnostics when provided by analysis", async () => {
+    mockAnalyseScenario.mockResolvedValue(
+      makeAnalysisResult({
+        compatibilityApplied: true,
+        compatibilityChanges: [
+          {
+            path: ["evidence", 0, "source"],
+            change: "Converted null source to undefined",
+          },
+        ],
+        compatibilityWarnings: [
+          "Applied deterministic reconstruction compatibility normalisation",
+        ],
+      }),
+    );
+    const { startCase } = await import("@/lib/graph/orchestrator.js");
+
+    const result = await startCase({ scenario: "Scenario text" });
+
+    expect(result.diagnostics.compatibilityApplied).toBe(true);
+    expect(result.diagnostics.compatibilityChanges).toHaveLength(1);
+  });
+
   it("exports placeholder updateCase", async () => {
     const { updateCase } = await import("@/lib/graph/orchestrator.js");