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/forms/Input.vue

@@ -0,0 +1,90 @@
+<script>
+/**
+ * @deprecated This component is deprecated and will be removed in the next major version.
+ * Please use v3/components/Form/Input.vue instead
+ */
+export default {
+  props: {
+    label: {
+      type: String,
+      default: '',
+    },
+    modelValue: {
+      type: [String, Number],
+      default: '',
+    },
+    type: {
+      type: String,
+      default: 'text',
+    },
+    placeholder: {
+      type: String,
+      default: '',
+    },
+    helpText: {
+      type: String,
+      default: '',
+    },
+    error: {
+      type: String,
+      default: '',
+    },
+    readonly: {
+      type: Boolean,
+      default: false,
+    },
+    styles: {
+      type: Object,
+      default: () => {},
+    },
+  },
+  emits: ['update:modelValue', 'input', 'blur'],
+  mounted() {
+    if (import.meta.env.DEV) {
+      // eslint-disable-next-line no-console
+      console.warn(
+        '[DEPRECATED] <WootInput> has be deprecated and will be removed soon. Please use v3/components/Form/Input.vue instead'
+      );
+    }
+  },
+  methods: {
+    onChange(e) {
+      this.$emit('input', e.target.value);
+      this.$emit('update:modelValue', e.target.value);
+    },
+    onBlur(e) {
+      this.$emit('blur', e.target.value);
+    },
+  },
+};
+</script>
+
+<template>
+  <label class="input-container">
+    <span v-if="label" class="text-heading-3">{{ label }}</span>
+    <input
+      :value="modelValue"
+      :type="type"
+      :placeholder="placeholder"
+      :readonly="readonly"
+      :style="styles"
+      @input="onChange"
+      @blur="onBlur"
+    />
+    <p v-if="helpText" class="help-text text-label-small">{{ helpText }}</p>
+    <span v-if="error" class="message">
+      {{ error }}
+    </span>
+    <slot name="masked" />
+  </label>
+</template>
+
+<style scoped lang="scss">
+.help-text {
+  @apply mt-0.5 not-italic text-n-slate-11;
+}
+
+.message {
+  margin-top: 0 !important;
+}
+</style>