Vendor Chatwoot Vue 3 frontend into frontend/

Copy the Chatwoot (v4.14.0) frontend runnable subset into frontend/ for
customization:
- app/javascript/ (Vue SPA: dashboard, widget, sdk, portal, superadmin)
- app/views/ (ERB templates for vite-plugin-ruby entrypoint resolution)
- app/helpers/, app/assets/ (Rails view helpers, static assets)
- enterprise/ (Enterprise edition frontend overlay)
- config/vite.json, vite.config.ts, bin/vite (Vite-Rails toolchain)
- package.json, pnpm-lock.yaml, tailwind/postcss/eslint configs
- Gemfile, Gemfile.lock (vite_rails gem for bin/vite binstub)

Excluded Rails backend: controllers, models, services, jobs, mailers,
policies, db, lib, spec, public, node_modules.

Update references to the new frontend location:
- .gitignore: exclude frontend build artifacts (node_modules, tmp, packs),
  keep frontend/bin/ and frontend/vendor/ via negation
- backend/scripts/parity_frontend_smoke.sh: CHATWOOT_DIR default
  reference/chatwoot -> ../frontend
- backend/scripts/parity_frontend_browser_smoke.mjs: same default update
- AGENTS.md: add frontend section with Rails/Vite coupling notes
- README: architecture tree includes frontend/

frontend/app/javascript/dashboard/components/widgets/TableFooter.vue

@@ -0,0 +1,51 @@
+<script setup>
+import { computed } from 'vue';
+import TableFooterResults from './TableFooterResults.vue';
+import TableFooterPagination from './TableFooterPagination.vue';
+const props = defineProps({
+  currentPage: {
+    type: Number,
+    default: 1,
+  },
+  pageSize: {
+    type: Number,
+    default: 25,
+  },
+  totalCount: {
+    type: Number,
+    default: 0,
+  },
+});
+
+const emit = defineEmits(['pageChange']);
+const totalPages = computed(() => Math.ceil(props.totalCount / props.pageSize));
+const firstIndex = computed(() => props.pageSize * (props.currentPage - 1) + 1);
+const lastIndex = computed(() =>
+  Math.min(props.totalCount, props.pageSize * props.currentPage)
+);
+const isFooterVisible = computed(
+  () => props.totalCount && !(firstIndex.value > props.totalCount)
+);
+</script>
+
+<!-- eslint-disable-next-line vue/no-root-v-if -->
+<template>
+  <footer
+    v-if="isFooterVisible"
+    class="flex items-center justify-between h-12 px-6"
+  >
+    <TableFooterResults
+      :first-index="firstIndex"
+      :last-index="lastIndex"
+      :total-count="totalCount"
+    />
+    <TableFooterPagination
+      v-if="totalCount"
+      :current-page="currentPage"
+      :total-pages="totalPages"
+      :total-count="totalCount"
+      :page-size="pageSize"
+      @page-change="emit('pageChange', $event)"
+    />
+  </footer>
+</template>