M5-T12: add expose toggle API and Home Assistant Expose settings panel

frontend/src/pages/ConfigPage.tsx

@@ -39,6 +39,7 @@ import {
 } from '@mantine/core'
 import apiClient, { ApiError } from '../api/client'
 import type { components } from '../api/schema.d.ts'
+import { ExposeSettings } from '../components/ExposeSettings'
 import { TotpSettings } from './TotpSettings'
 
 // ---------------------------------------------------------------------------
@@ -413,6 +414,20 @@ export function ConfigPage() {
         </Stack>
       )}
 
+      {/* M5-T12: Home Assistant Expose — entity toggle panel as an Accordion.Item
+          below the config form. Kept outside <form> because it manages its own
+          mutations (PUT /api/expose, POST /api/expose/republish). */}
+      <Accordion variant="separated" radius="md" mt="xl" data-testid="expose-accordion">
+        <Accordion.Item value="expose">
+          <Accordion.Control data-testid="accordion-control-expose">
+            <Text fw={500}>Home Assistant Expose</Text>
+          </Accordion.Control>
+          <Accordion.Panel>
+            <ExposeSettings />
+          </Accordion.Panel>
+        </Accordion.Item>
+      </Accordion>
+
       {/* TOTP two-factor auth management */}
       <Stack mt="xl">
         <TotpSettings />