refactor: refactor smart entry as standalone modal overlay

- Convert TravelReimbursementCreateView from page to modal overlay
- Simplify App.vue navigation flow with smartEntryOpen state
- Add create-request button in RequestsView

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

src/views/RequestsView.vue

@@ -52,6 +52,10 @@
             <i class="mdi mdi-chevron-down"></i>
           </button>
         </div>
+        <button class="create-request-btn" type="button" @click="emit('create-request')">
+          <i class="mdi mdi-plus-circle-outline"></i>
+          <span>发起报销</span>
+        </button>
       </div>
 
       <p class="hint"><i class="mdi mdi-information-outline"></i> 点击任意行可查看单据详情</p>
@@ -125,7 +129,7 @@ defineProps({
   filteredRequests: { type: Array, required: true }
 })
 
-const emit = defineEmits(['ask', 'approve', 'reject'])
+const emit = defineEmits(['ask', 'approve', 'reject', 'create-request'])
 
 const activeTab = ref('全部')
 const tabs = ['全部', '待提交', '审批中', '待出行', '已完成']
@@ -311,6 +315,30 @@ watch(activeTab, () => { currentPage.value = 1 })
   flex-wrap: wrap;
 }
 
+.create-request-btn {
+  min-height: 40px;
+  display: inline-flex;
+  align-items: center;
+  justify-content: center;
+  gap: 8px;
+  padding: 0 18px;
+  border: 0;
+  border-radius: 10px;
+  background: linear-gradient(135deg, #10b981, #059669);
+  color: #fff;
+  font-size: 14px;
+  font-weight: 800;
+  white-space: nowrap;
+  box-shadow: 0 10px 24px rgba(5, 150, 105, 0.2);
+  transition: transform 160ms ease, box-shadow 160ms ease, filter 160ms ease;
+}
+
+.create-request-btn:hover {
+  transform: translateY(-1px);
+  box-shadow: 0 14px 28px rgba(5, 150, 105, 0.24);
+  filter: saturate(1.02);
+}
+
 .filter-btn,
 .page-size {
   min-height: 38px;