fix(test-runner): revert response envelope to flat shape

tests/wp_api/test_runner_endpoint.py

@@ -13,10 +13,9 @@ async def test_run_wildcard(wp_client):
     })
     assert resp.status == 200
     body = await resp.json()
-    data = body["data"]
-    assert len(data["results"]) == 5
-    assert all(r == {"$x": "alpha"} for r in data["results"])
-    assert data["histogram"] == {"alpha": 5}
+    assert len(body["results"]) == 5
+    assert all(r == {"$x": "alpha"} for r in body["results"])
+    assert body["histogram"] == {"alpha": 5}
 
 
 async def test_run_fixed_values(wp_client):
@@ -28,9 +27,8 @@ async def test_run_fixed_values(wp_client):
     })
     assert resp.status == 200
     body = await resp.json()
-    data = body["data"]
-    assert data["results"][0] == {"$lens": "85mm"}
-    assert data["histogram"] == {"85mm": 1}
+    assert body["results"][0] == {"$lens": "85mm"}
+    assert body["histogram"] == {"85mm": 1}
 
 
 async def test_run_unknown_type_400(wp_client):

tests/wp_api/test_test_runner.py

@@ -62,7 +62,7 @@ async def test_nested_wildcard_ref_resolves_via_catalog(aiohttp_client, app_with
     })
     assert resp.status == 200
     body = await resp.json()
-    samples = body["data"]["samples"]
+    samples = body["samples"]
     assert len(samples) == 5
     for s in samples:
         assert s in ("red dress", "blue dress"), (
@@ -86,7 +86,7 @@ async def test_unknown_ref_emits_warning_does_not_crash(aiohttp_client, app_with
     })
     assert resp.status == 200
     body = await resp.json()
-    warnings = body["data"].get("warnings", [])
+    warnings = body.get("warnings", [])
     assert any("deadbeef" in str(w) for w in warnings), (
         f"expected 'Unknown wildcard ref' warning for deadbeef, got: {warnings}"
     )

wp_api/test_runner.py

@@ -103,12 +103,10 @@ async def run_test(request: web.Request) -> web.Response:
             sample_values.append("")
 
     return json_ok({
-        "data": {
-            "samples": sample_values,
-            "warnings": deduped_warnings,
-            "histogram": dict(histogram),
-            "results": results,
-        },
+        "results": results,
+        "histogram": dict(histogram),
+        "samples": sample_values,        # NEW: additive top-level
+        "warnings": deduped_warnings,    # NEW: additive top-level
     })