docs(skills): the dashboards evals no longer escalate to a Cube

Eval 2's expected output escalates a rolling window to a stored or
materialized rolling field or app code, not a Cube: a cube member's sql
is a column reference. Its must_contain drops "Cube", which a correct
answer no longer needs to name. The evals README names the same
escalation: a stored field or app code. Both files shrink.

Claude-Session: https://claude.ai/code/session_01Sfe5YjBLwB9J3y8fvm2xq1
Co-authored-by: Claude <noreply@anthropic.com>

Author: claude

skills/objectstack-ui/evals/README.md

@@ -7,7 +7,7 @@ view / page / dashboard / report metadata.
 
 - `analytics-inline-vs-dataset.json` — dataset-envelope decisions for
   dashboard/report widgets: when a data need fits a `defineDataset`, when it
-  must escalate to a Cube or a stored rollup field, and when an ad-hoc
+  must escalate to a stored field or app code, and when an ad-hoc
   in-page `<ObjectChart>` needs no dataset at all.
 - `views-apps-actions-pages.json` — `defineView` containers, `App.create`
   navigation, `defineAction` surfaces, record / interface pages, package

skills/objectstack-ui/evals/analytics-inline-vs-dataset.json

@@ -15,11 +15,11 @@
     {
       "id": 2,
       "prompt": "Add a dashboard chart showing 30-day rolling revenue (a moving average / running total over time). Model the data need.",
-      "expected_output": "Recognizes that a window/rolling calculation is BEYOND the dataset envelope (a dataset has no window/having grammar and compareTo only does previous-period/year). Escalates to a hand-authored Cube (raw SQL) or a stored/materialized rolling field — it does not pretend a dataset date-bucket or a plain measure expresses a moving window.",
+      "expected_output": "Recognizes that a window/rolling calculation is BEYOND the dataset envelope (a dataset has no window/having grammar and compareTo only does previous-period/year). Escalates to a stored/materialized rolling field or app code, not a Cube — it does not pretend a dataset date-bucket or a plain measure expresses a moving window.",
       "note": "The must_not_contain on 'dateGranularity' is deliberately strict: proposing date bucketing as the fix is the classic wrong answer. It can flag an otherwise-correct answer that merely mentions the field in passing — treat such a flag as a review cue, not an automatic fail.",
       "files": [],
       "assertions": {
-        "must_contain": ["window", "Cube"],
+        "must_contain": ["window"],
         "must_not_contain": ["dateGranularity"]
       }
     },