fix: show request timing and nested usage

tests/test_payload.py

@@ -109,6 +109,34 @@ class CodexRetryGatewayTUITests(unittest.TestCase):
         }
         self.assertEqual(mod.request_usage_summary(row), "in 75 | out 40 | cached 25 (25%)")
 
+    def test_request_rows_read_usage_from_nested_usage_object(self) -> None:
+        mod = load_module()
+        payload = {
+            "entries": [
+                {
+                    "seq": 1,
+                    "request_id": "req_nested",
+                    "path": "/responses",
+                    "usage": {
+                        "input_tokens": 120,
+                        "output_tokens": 33,
+                        "total_tokens": 153,
+                        "cached_tokens": 20,
+                    },
+                }
+            ]
+        }
+        rows = mod.normalize_request_rows(payload)
+        self.assertEqual(rows[0]["input_tokens"], 120)
+        self.assertEqual(rows[0]["output_tokens"], 33)
+        self.assertEqual(rows[0]["total_tokens"], 153)
+        self.assertEqual(rows[0]["cached_tokens"], 20)
+
+    def test_format_duration_ms_as_seconds(self) -> None:
+        mod = load_module()
+        self.assertEqual(mod.format_duration_ms_as_seconds(1532), "1.5s")
+        self.assertEqual(mod.format_duration_ms_as_seconds(120000), "120s")
+
     def test_profile_editor_payload_round_trip(self) -> None:
         mod = load_module()
         row = {