feat(sections): add SectionFormPage demo

Add a dedicated SectionFormPage demo component and view to showcase form fields, detail sections, notices, and page-driver-managed state.

Remove the obsolete SectionSearchPanel demo route and menu entry, and add spacing to SectionFormPage cards for improved layout.feat(sections): add SectionFormPage demo

Add a dedicated SectionFormPage demo component and view to showcase form fields, detail sections, notices, and page-driver-managed state.

Remove the obsolete SectionSearchPanel demo route and menu entry, and add spacing to SectionFormPage cards for improved layout.

src/views/demos/SectionFormPageDemo.vue

@@ -0,0 +1,17 @@
+<script setup lang="ts">
+import PageSectionFormPageDemo from '@/components/pages/PageSectionFormPageDemo.vue'
+import { useSectionsDemoPage } from '@/composables/page-drivers/useSectionsDemoPage'
+
+// Demo view 維持薄層，只掛 page driver，並把 page model / actions 傳給 page component。
+const page = useSectionsDemoPage()
+</script>
+
+<template>
+  <PageSectionFormPageDemo
+    v-model:demo-form="page.demoForm.value"
+    :page="page.pageModel.value"
+    @back="page.handleFormBack"
+    @reset="page.resetDemoForm"
+    @submit="page.handleFormSubmit"
+  />
+</template>