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/widget/api/conversation.js

@@ -0,0 +1,95 @@
+import endPoints from 'widget/api/endPoints';
+import { API } from 'widget/helpers/axios';
+
+const createConversationAPI = async content => {
+  const urlData = endPoints.createConversation(content);
+  return API.post(urlData.url, urlData.params);
+};
+
+const sendMessageAPI = async (
+  content,
+  replyTo = null,
+  { customAttributes, labels } = {}
+) => {
+  const urlData = endPoints.sendMessage(content, replyTo, {
+    customAttributes,
+    labels,
+  });
+  return API.post(urlData.url, urlData.params);
+};
+
+const sendAttachmentAPI = async (
+  attachment,
+  { customAttributes, labels } = {}
+) => {
+  const urlData = endPoints.sendAttachment(attachment, {
+    customAttributes,
+    labels,
+  });
+  return API.post(urlData.url, urlData.params);
+};
+
+const getMessagesAPI = async ({ before, after }) => {
+  const urlData = endPoints.getConversation({ before, after });
+  return API.get(urlData.url, { params: urlData.params });
+};
+
+const getConversationAPI = async () => {
+  return API.get(`/api/v1/widget/conversations${window.location.search}`);
+};
+
+const toggleTyping = async ({ typingStatus }) => {
+  return API.post(
+    `/api/v1/widget/conversations/toggle_typing${window.location.search}`,
+    { typing_status: typingStatus }
+  );
+};
+
+const setUserLastSeenAt = async ({ lastSeen }) => {
+  return API.post(
+    `/api/v1/widget/conversations/update_last_seen${window.location.search}`,
+    { contact_last_seen_at: lastSeen }
+  );
+};
+const sendEmailTranscript = async () => {
+  return API.post(
+    `/api/v1/widget/conversations/transcript${window.location.search}`
+  );
+};
+const toggleStatus = async () => {
+  return API.get(
+    `/api/v1/widget/conversations/toggle_status${window.location.search}`
+  );
+};
+
+const setCustomAttributes = async customAttributes => {
+  return API.post(
+    `/api/v1/widget/conversations/set_custom_attributes${window.location.search}`,
+    {
+      custom_attributes: customAttributes,
+    }
+  );
+};
+
+const deleteCustomAttribute = async customAttribute => {
+  return API.post(
+    `/api/v1/widget/conversations/destroy_custom_attributes${window.location.search}`,
+    {
+      custom_attribute: [customAttribute],
+    }
+  );
+};
+
+export {
+  createConversationAPI,
+  sendMessageAPI,
+  getConversationAPI,
+  getMessagesAPI,
+  sendAttachmentAPI,
+  toggleTyping,
+  setUserLastSeenAt,
+  sendEmailTranscript,
+  toggleStatus,
+  setCustomAttributes,
+  deleteCustomAttribute,
+};