fix(listings): 手机端筛选地区更名为IP地区并对齐发布选项

- 名称统一：将手机端筛选抽屉的「资产地区」更名为「IP地区」，与PC端保持统一
- 选项对齐：地区选项优先对齐发布配置 publishOptions.region_options（常用登录地区），避免脏数据混入
- 验证通过：prettier、eslint、typecheck 及 65 个单测全部通过

frontend/src/features/listings/composables/useHomeFilters.ts

@@ -212,10 +212,11 @@ export function useHomeFilters(
   const advancedFiltersOpen = ref(false)
 
   const regionOptions = computed(() =>
-    uniqueOptions([
-      ...publishOptions.value.region_options,
-      ...listings.value.flatMap(item => assetRegions(item)),
-    ])
+    uniqueOptions(
+      publishOptions.value.region_options.length > 0
+        ? publishOptions.value.region_options
+        : listings.value.flatMap(item => assetRegions(item))
+    )
   )
 
   const loginMethodOptions = computed(() =>

frontend/src/features/listings/views/MobileHomeView.vue

@@ -175,10 +175,11 @@ const loginMethodFilterOptions = computed(() =>
 )
 
 const regionFilterOptions = computed(() =>
-  uniqueOptions([
-    ...publishOptions.value.region_options,
-    ...listings.value.flatMap(item => assetRegions(item)),
-  ])
+  uniqueOptions(
+    publishOptions.value.region_options.length > 0
+      ? publishOptions.value.region_options
+      : listings.value.flatMap(item => assetRegions(item))
+  )
 )
 
 const filterSections = computed<FilterSection[]>(() => [
@@ -207,7 +208,7 @@ const filterSections = computed<FilterSection[]>(() => [
     maxPlaceholder: '最高比例',
   },
   { key: 'server', title: '区服', type: 'chips', options: serverFilterOptions.value },
-  { key: 'region', title: '资产地区', type: 'chips', options: regionFilterOptions.value },
+  { key: 'region', title: 'IP地区', type: 'chips', options: regionFilterOptions.value },
   { key: 'login', title: '上号方式', type: 'chips', options: loginMethodFilterOptions.value },
   {
     key: 'insurance',