fix(types): name the parser tier in the metric-card label refusal's silence clause (objectui#4425)

The objectui#10981 closure walk requires every "no render-time error or
warning" sentence to say what the parser tier does. Measured with the
manifest built the way gen-manifest builds it: `dashboard` declares no
`widgets` slot, so `validateTree` never reaches a widget-slot card and draws
nothing for its `label` (control: an undeclared key on the dashboard itself
draws `unknown-prop`). The zod message, the TypeScript member's docblock and
the changeset now say so.

Claude-Session: https://claude.ai/code/session_01FngvPpdrnhHMdHHq6vwwju
Co-authored-by: Claude <noreply@anthropic.com>

Author: claude

.changeset/4425-metric-card-label-refused.md

@@ -9,7 +9,7 @@ BREAKING (`@object-ui/types`): a `metric-card` in a dashboard's `widgets[]` that
 - FROM `{ "type": "metric-card", "label": "Total Revenue", "value": "$123,456" }`
 - TO `{ "type": "metric-card", "title": "Total Revenue", "value": "$123,456" }`
 
-Why: `MetricCard` draws `title` as the card heading and reads no `label`. `label` is how the sibling `metric` node spells its heading, and the card inherited it from `BaseSchema`, so a card authored with `label` validated on every face and drew no heading, with no warning. The objectui#8284 ruling settles which way to go: one spelling per rendered thing, and the other spelling is refused by name.
+Why: `MetricCard` draws `title` as the card heading and reads no `label`. `label` is how the sibling `metric` node spells its heading, and the card inherited it from `BaseSchema`, so a card authored with `label` validated on every face and drew no heading. Nothing said so: no render-time error or warning, and the parser tier's `validateTree` does not walk a dashboard's `widgets`. The objectui#8284 ruling settles which way to go: one spelling per rendered thing, and the other spelling is refused by name.
 
 **Migration.** Rename the key to `title`. The value keeps its type: a plain string or an inline per-locale map.
 

packages/types/src/complex.ts

@@ -2478,9 +2478,11 @@ export interface DashboardWidgetSlotComponentSchema extends BaseSchema {
    * (`plugin-dashboard:metric-card`) declares `title`, and `MetricCard` draws
    * `title` as the heading. `label` is how the sibling `metric` node
    * (`plugin-dashboard:metric`) spells its heading, so an author who knows that
-   * node wrote it here and got a card with no heading and no warning. Under
-   * the objectui#8284 ruling (one spelling per rendered thing) the member is
-   * restated as a refusal, in the shape `body` / `children` below take.
+   * node wrote it here and got a card with no heading: no render-time error or
+   * warning, and the parser tier's `validateTree` does not walk a dashboard's
+   * `widgets`. Under the objectui#8284 ruling (one spelling per rendered thing)
+   * the member is restated as a refusal, in the shape `body` / `children` below
+   * take.
    *
    * The zod twin is the private slot arm in `zod/complex.zod.ts`, which
    * refuses `label` by name and names `title` in the message.

packages/types/src/zod/complex.zod.ts

@@ -1250,8 +1250,9 @@ const METRIC_CARD_LABEL_IS_TITLE =
   + 'spells its heading `title`. The registration (`plugin-dashboard:metric-card`) declares `title`, and '
   + '`MetricCard` draws it as the card heading; nothing on that path reads `label`, which is how the sibling '
   + '`metric` node (`plugin-dashboard:metric`) spells its heading. An authored `label` therefore drew a card '
-  + 'with NO heading, and no render-time error or warning. Write the heading as `title`: a plain string or '
-  + 'an inline per-locale map.';
+  + 'with NO heading, and no render-time error or warning; nor did the parser tier\'s `validateTree` notice it, '
+  + 'because it does not walk a dashboard\'s `widgets`. Write the heading as `title`: a plain string or an '
+  + 'inline per-locale map.';
 
 /**
  * A COMPONENT node sitting directly in a dashboard's widget slot — the