feat: add diagnostics and telemetry runtime

tests/unit/query-cache.test.js

@@ -52,7 +52,10 @@ describe("TanStack QueryCachePort adapter", () => {
   it("normalizes adapter exceptions without raw key data", async () => {
     const client = new QueryClient();
     vi.spyOn(client, "invalidateQueries").mockRejectedValue(new Error("secret-key"));
-    const adapter = createQueryCacheAdapter(client);
+    const record = vi.fn();
+    const adapter = createQueryCacheAdapter(client, {
+      diagnostics: { record },
+    });
     const result = await adapter.invalidate(["resource", "sensitive-filter"]);
 
     expect(result).toMatchObject({
@@ -60,5 +63,16 @@ describe("TanStack QueryCachePort adapter", () => {
       error: { kind: "QUERY_CACHE_FAILURE" },
     });
     expect(JSON.stringify(result)).not.toContain("sensitive-filter");
+    expect(record).toHaveBeenCalledWith({
+      level: "warn",
+      eventId: "cache.operation.failed",
+      context: {
+        operation: "invalidate",
+        error_kind: "QUERY_CACHE_FAILURE",
+      },
+    });
+    expect(JSON.stringify(record.mock.calls)).not.toMatch(
+      /sensitive-filter|secret-key/,
+    );
   });
 });