feat(site): feature and preset reference UI + docs integration (#1258)

Co-authored-by: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

site/src/components/docs/api-reference/ApiActionsTable.astro

@@ -0,0 +1,42 @@
+---
+import Table from '@/components/typography/Table.astro';
+import Tbody from '@/components/typography/Tbody.astro';
+import Th from '@/components/typography/Th.astro';
+import Thead from '@/components/typography/Thead.astro';
+import Tr from '@/components/typography/Tr.astro';
+import type { FeatureActionDef } from '@/types/feature-reference';
+import StateRow from './StateRow.astro';
+
+interface Props {
+  actions: Record<string, FeatureActionDef>;
+  featureName: string;
+}
+
+const { actions, featureName } = Astro.props;
+
+const actionEntries = Object.entries(actions);
+---
+
+<Table maxWidth={false} outerClass="my-6">
+  <Thead>
+    <Tr>
+      <Th>Action</Th>
+      <Th>Type</Th>
+      <Th>Details</Th>
+    </Tr>
+  </Thead>
+  <Tbody>
+    {
+      actionEntries.map(([name, def]) => (
+        <StateRow
+          name={name}
+          type={def.type}
+          detailedType={def.detailedType}
+          description={def.description}
+          componentName={featureName}
+          kind="action"
+        />
+      ))
+    }
+  </Tbody>
+</Table>