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/api/agentBots.js

@@ -0,0 +1,34 @@
+/* global axios */
+import ApiClient from './ApiClient';
+
+class AgentBotsAPI extends ApiClient {
+  constructor() {
+    super('agent_bots', { accountScoped: true });
+  }
+
+  create(data) {
+    return axios.post(this.url, data, {
+      headers: { 'Content-Type': 'multipart/form-data' },
+    });
+  }
+
+  update(id, data) {
+    return axios.patch(`${this.url}/${id}`, data, {
+      headers: { 'Content-Type': 'multipart/form-data' },
+    });
+  }
+
+  deleteAgentBotAvatar(botId) {
+    return axios.delete(`${this.url}/${botId}/avatar`);
+  }
+
+  resetAccessToken(botId) {
+    return axios.post(`${this.url}/${botId}/reset_access_token`);
+  }
+
+  resetSecret(botId) {
+    return axios.post(`${this.url}/${botId}/reset_secret`);
+  }
+}
+
+export default new AgentBotsAPI();