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-next/CustomAttributes/story/CustomAttributes.story.vue

@@ -0,0 +1,83 @@
+<script setup>
+import Attributes from './fixtures';
+
+import OtherAttribute from '../OtherAttribute.vue';
+import ListAttribute from '../ListAttribute.vue';
+import DateAttribute from '../DateAttribute.vue';
+import CheckboxAttribute from '../CheckboxAttribute.vue';
+
+const componentMap = {
+  list: ListAttribute,
+  checkbox: CheckboxAttribute,
+  date: DateAttribute,
+  default: OtherAttribute,
+};
+
+const getCurrentComponent = type => {
+  return componentMap[type] || componentMap.default;
+};
+
+const handleUpdate = (type, value) => {
+  console.log(`${type} updated:`, value);
+};
+
+const handleDelete = type => {
+  console.log(`${type} deleted`);
+};
+</script>
+
+<template>
+  <Story
+    title="Components/CustomAttributes"
+    :layout="{ type: 'grid', width: '600px' }"
+  >
+    <Variant title="Create View">
+      <div class="flex flex-col gap-4 p-4 border rounded-lg border-n-strong">
+        <div
+          v-for="attribute in Attributes"
+          :key="attribute.attributeKey"
+          class="grid grid-cols-[140px,1fr] group-hover/attribute items-center gap-1 min-h-10"
+        >
+          <div class="flex items-center justify-between truncate">
+            <span class="text-sm font-medium text-n-slate-12">
+              {{ attribute.attributeDisplayName }}
+            </span>
+          </div>
+          <component
+            :is="getCurrentComponent(attribute.attributeDisplayType)"
+            :attribute="attribute"
+            @update="
+              value => handleUpdate(attribute.attributeDisplayType, value)
+            "
+            @delete="() => handleDelete(attribute.attributeDisplayType)"
+          />
+        </div>
+      </div>
+    </Variant>
+
+    <Variant title="Saved View">
+      <div class="flex flex-col gap-4 p-4 border rounded-lg border-n-strong">
+        <div
+          v-for="attribute in Attributes"
+          :key="attribute.attributeKey"
+          class="grid grid-cols-[140px,1fr] group-hover/attribute items-center gap-1 min-h-10"
+        >
+          <div class="flex items-center justify-between truncate">
+            <span class="text-sm font-medium text-n-slate-12">
+              {{ attribute.attributeDisplayName }}
+            </span>
+          </div>
+          <component
+            :is="getCurrentComponent(attribute.attributeDisplayType)"
+            :attribute="attribute"
+            is-editing-view
+            @update="
+              value => handleUpdate(attribute.attributeDisplayType, value)
+            "
+            @delete="() => handleDelete(attribute.attributeDisplayType)"
+          />
+        </div>
+      </div>
+    </Variant>
+  </Story>
+</template>

frontend/app/javascript/dashboard/components-next/CustomAttributes/story/fixtures.js

@@ -0,0 +1,39 @@
+export default [
+  {
+    attributeKey: 'textContact',
+    attributeDisplayName: 'Text Input',
+    attributeDisplayType: 'text',
+    value: 'Sample text value',
+  },
+  {
+    attributeKey: 'linkContact',
+    attributeDisplayName: 'URL Input',
+    attributeDisplayType: 'link',
+    value: 'https://www.chatwoot.com',
+  },
+  {
+    attributeKey: 'numberContact',
+    attributeDisplayName: 'Number Input',
+    attributeDisplayType: 'number',
+    value: '42',
+  },
+  {
+    attributeKey: 'listContact',
+    attributeDisplayName: 'List Input',
+    attributeDisplayType: 'list',
+    value: 'Option 2',
+    attributeValues: ['Option 1', 'Option 2', 'Option 3'],
+  },
+  {
+    attributeKey: 'dateContact',
+    attributeDisplayName: 'Date Input',
+    attributeDisplayType: 'date',
+    value: '2024-03-25T00:00:00.000Z',
+  },
+  {
+    attributeKey: 'checkboxContact',
+    attributeDisplayName: 'Checkbox Input',
+    attributeDisplayType: 'checkbox',
+    value: true,
+  },
+];