feat(表单): 优化表单选择项样式并添加年份选择限制

- 为表单选择项添加不同状态下的样式区分
- 限制年份选择器最大日期为当前年份
- 将返回逻辑改为navigateBack
- 移除TODO注释并使用真实API获取数据

@@ -138,7 +138,7 @@
                     <!-- 车辆出厂年份 -->
                     <nut-form-item label-position="top" label="车辆出厂年份" prop="manufacture_year">
                         <view class="form-item-content" @click="showYearPicker">
-                            <text class="form-value">{{ formData.manufacture_year || '请选择' }}</text>
+                            <text class="form-value" :class="{ 'form-value-selected': formData.manufacture_year, 'form-value-placeholder': !formData.manufacture_year }">{{ formData.manufacture_year || '请选择' }}</text>
                             <Right class="arrow-icon" />
                         </view>
                     </nut-form-item>
@@ -146,7 +146,7 @@
                     <!-- 新旧程度 -->
                     <nut-form-item label-position="top" label="新旧程度" prop="new_level">
                         <view class="form-item-content" @click="showConditionPicker">
-                            <text class="form-value">{{ formData.new_level || '请选择' }}</text>
+                            <text class="form-value" :class="{ 'form-value-selected': formData.new_level, 'form-value-placeholder': !formData.new_level }">{{ formData.new_level || '请选择' }}</text>
                             <Right class="arrow-icon" />
                         </view>
                     </nut-form-item>
@@ -200,7 +200,7 @@
                     <!-- 刹车磨损度 -->
                     <nut-form-item label-position="top" label="刹车磨损度" prop="brake_wear_level">
                         <view class="form-item-content" @click="showBrakeWearPicker">
-                            <text class="form-value">{{ formData.brake_wear_level || '请选择' }}</text>
+                            <text class="form-value" :class="{ 'form-value-selected': formData.brake_wear_level, 'form-value-placeholder': !formData.brake_wear_level }">{{ formData.brake_wear_level || '请选择' }}</text>
                             <Right class="arrow-icon" />
                         </view>
                     </nut-form-item>
@@ -208,7 +208,7 @@
                     <!-- 轮胎磨损度 -->
                     <nut-form-item label-position="top" label="轮胎磨损度" prop="tire_wear_level">
                         <view class="form-item-content" @click="showTireWearPicker">
-                            <text class="form-value">{{ formData.tire_wear_level || '请选择' }}</text>
+                            <text class="form-value" :class="{ 'form-value-selected': formData.tire_wear_level, 'form-value-placeholder': !formData.tire_wear_level }">{{ formData.tire_wear_level || '请选择' }}</text>
                             <Right class="arrow-icon" />
                         </view>
                     </nut-form-item>
@@ -287,6 +287,7 @@
                 v-model="yearValue"
                 title="选择出厂年份"
                 type="year-month"
+                :max-date="maxYearDate"
                 @confirm="onYearConfirm"
                 @cancel="yearPickerVisible = false"
             />
@@ -334,10 +335,9 @@ import { getSchoolsAPI, getBrandsModelsAPI } from '@/api/other';
 /**
  * 返回上一页
  */
+// eslint-disable-next-line no-unused-vars
 const goBack = () => {
-    Taro.redirectTo({
-        url: '/pages/index/index'
-    })
+    Taro.navigateBack()
 }
 
 // 获取页面参数
@@ -416,6 +416,9 @@ const conditionValue = ref([])
 const brakeWearValue = ref([])
 const tireWearValue = ref([])
 
+// 年份选择器最大日期限制（当前年份的12月31日）
+const maxYearDate = ref(new Date(new Date().getFullYear(), 11, 31))
+
 // 选择器选项数据
 const schoolOptions = ref([])
 const brandOptions = ref([])
@@ -972,7 +975,7 @@ const loadCarData = async () => {
     try {
         Taro.showLoading({ title: '加载中...' })
 
-        // TODO: 调用真实API获取车辆数据
+        // 调用真实API获取车辆数据
         const { code, data } = await getVehicleDetailAPI({ id: carId.value })
 
         if (code) {