Initial commit: Add logistics and order_detail message types

- Add Logistics component with progress tracking
- Add OrderDetail component for order information
- Support data-driven steps and actions
- Add blue color scale to widget SCSS
- Fix node overflow and progress bar rendering issues
- Add English translations for dashboard components

Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>

app/javascript/widget/components/ChatHeader.vue

@@ -0,0 +1,63 @@
+<script setup>
+import { toRef } from 'vue';
+import { useRouter } from 'vue-router';
+import FluentIcon from 'shared/components/FluentIcon/Index.vue';
+import HeaderActions from './HeaderActions.vue';
+import AvailabilityContainer from 'widget/components/Availability/AvailabilityContainer.vue';
+import { useAvailability } from 'widget/composables/useAvailability';
+
+const props = defineProps({
+  avatarUrl: { type: String, default: '' },
+  title: { type: String, default: '' },
+  showPopoutButton: { type: Boolean, default: false },
+  showBackButton: { type: Boolean, default: false },
+  availableAgents: { type: Array, default: () => [] },
+});
+
+const availableAgents = toRef(props, 'availableAgents');
+
+const router = useRouter();
+const { isOnline } = useAvailability(availableAgents);
+
+const onBackButtonClick = () => {
+  router.replace({ name: 'home' });
+};
+</script>
+
+<template>
+  <header class="flex justify-between w-full p-5 bg-n-background gap-2">
+    <div class="flex items-center">
+      <button
+        v-if="showBackButton"
+        class="px-2 ltr:-ml-3 rtl:-mr-3"
+        @click="onBackButtonClick"
+      >
+        <FluentIcon icon="chevron-left" size="24" class="text-n-slate-12" />
+      </button>
+      <img
+        v-if="avatarUrl"
+        class="w-8 h-8 ltr:mr-3 rtl:ml-3 rounded-full"
+        :src="avatarUrl"
+        alt="avatar"
+      />
+      <div class="flex flex-col gap-1">
+        <div
+          class="flex items-center text-base font-medium leading-4 text-n-slate-12"
+        >
+          <span v-dompurify-html="title" class="ltr:mr-1 rtl:ml-1" />
+          <div
+            :class="`h-2 w-2 rounded-full
+              ${isOnline ? 'bg-n-teal-10' : 'hidden'}`"
+          />
+        </div>
+        <AvailabilityContainer
+          :agents="availableAgents"
+          :show-header="false"
+          :show-avatars="false"
+          text-classes="text-xs leading-3"
+        />
+      </div>
+    </div>
+    <HeaderActions :show-popout-button="showPopoutButton" />
+  </header>
+</template>