feat(web): I1 shell and I2 customer/project UI

Vue 3 + Element Plus layout with JWT login, RBAC routes, axios 401
handling with token restore, and Customers/Projects views wired to
platform APIs.

Made-with: Cursor

web/delivery-platform-ui/src/views/HomeView.vue

@@ -0,0 +1,46 @@
+<template>
+  <el-card>
+    <el-alert title="I1：JWT + 布局壳；后续迭代挂载 M1～M11" type="info" show-icon :closable="false" />
+    <p class="meta">用户：{{ auth.displayName }}，角色：{{ auth.roles.join(", ") || "—" }}</p>
+    <el-button type="primary" :loading="pingLoading" @click="ping">Bearer 调用 /api/v1/ping</el-button>
+    <pre v-if="pingBody">{{ pingBody }}</pre>
+  </el-card>
+</template>
+
+<script setup>
+import { ref, onMounted } from "vue";
+import axios from "axios";
+import { useAuthStore } from "../stores/auth";
+
+const auth = useAuthStore();
+const pingBody = ref("");
+const pingLoading = ref(false);
+
+onMounted(() => auth.restoreAxiosAuth());
+
+async function ping() {
+  pingLoading.value = true;
+  pingBody.value = "";
+  try {
+    const { data } = await axios.get("/api/v1/ping");
+    pingBody.value = JSON.stringify(data, null, 2);
+  } catch (e) {
+    pingBody.value = e.response?.data ? JSON.stringify(e.response.data) : String(e.message);
+  } finally {
+    pingLoading.value = false;
+  }
+}
+</script>
+
+<style scoped>
+.meta {
+  margin: 12px 0;
+}
+pre {
+  margin-top: 12px;
+  background: #1e1e1e;
+  color: #d4d4d4;
+  padding: 12px;
+  border-radius: 4px;
+}
+</style>