fix(lint): the chart-field-unknown explanation drops its os migrate meta sentence; the fix line carries the house form

Claude-Session: https://claude.ai/code/session_01VZqqwTj2wsihZEbfT6yyYN
Co-authored-by: Claude <noreply@anthropic.com>

Author: claude

packages/lint/src/rule-explanations.ts

@@ -447,10 +447,9 @@ const CHART_FIELD_UNKNOWN_EXPLANATION: RuleExplanation = {
       'names an entry of the widget\'s selection is not reported, and a selection entry that does not ' +
       'resolve is `widget-dimension-unknown` or `widget-measure-unknown`\'s error.',
     'To fix it, delete the key: `chartConfig.xAxis`, `chartConfig.yAxis` and `chartConfig.series` are ' +
-      'refused on a dataset-bound widget (ADR-0021). `os migrate meta --from 17` lists the mechanical ' +
-      'edits for existing sources. Post-cutover data is keyed by the dataset\'s measure NAME, not the ' +
-      'base column. Suppress with `suppressWarnings: [\'chart-field-unknown\']` if the inert key is ' +
-      'intentional.',
+      'refused on a dataset-bound widget (ADR-0021). Post-cutover data is keyed by the dataset\'s ' +
+      'measure NAME, not the base column. Suppress with `suppressWarnings: [\'chart-field-unknown\']` ' +
+      'if the inert key is intentional.',
   ],
 };
 

packages/lint/src/validate-widget-bindings.test.ts

@@ -1985,7 +1985,7 @@ describe('[#22161] one-line verdicts — the rule ids this file shortened', () =
     [WIDGET_FILTER_FIELD_UNKNOWN]: ['`runtimeFilter`', 'widens the scope', 'nothing reports the miss', 'filter-token-unknown'],
     [WIDGET_FILTER_FIELD_NOT_INCLUDED]: ['`assertDeclared`', '`runtimeFilter`', 'joins ONLY'],
     [WIDGET_SORTBY_UNSELECTED]: ['`resolveOrdering`', 'DATASET_INVALID', 'query RESULT', 'DashboardWidgetOptionsSchema.sortBy'],
-    [CHART_FIELD_UNKNOWN]: ['`axisPresentation`', 'BY NAME', 'silent no-op', 'os migrate meta --from 17'],
+    [CHART_FIELD_UNKNOWN]: ['`axisPresentation`', 'BY NAME', 'silent no-op', 'refused on a dataset-bound widget'],
     [CHART_MEASURES_MISSING]: ['DatasetWidget.tsx', 'widget-measures-missing', 'chart-dimensions-missing'],
     [WIDGET_MEASURES_MISSING]: ['`solid-gauge`', '`pivot`', 'one KPI number the tile exists to show'],
     [CHART_DIMENSIONS_MISSING]: ['METRIC_TYPES.has(widgetType) || dimensions.length === 0', 'declared chart family is simply gone', '`metric` or `kpi`'],