chore: 修复 auth 和 admin 视图导入路径

- 修复 AdminLoginView 使用 features/admin
- 修复 LoginView, MobileLoginView, MobileRegisterView 使用 features/auth
- 修复 MobileProfileView, MobileRealnameView 使用正确路径
- 修复 useSmsCountdown 导入到 shared/composables

类型错误：79 → ?
模块错误：38 → 31

frontend/src/features/admin/views/AdminLoginView.vue

@@ -4,7 +4,7 @@ import { Lock, User } from "@element-plus/icons-vue";
 import { onMounted, reactive, ref } from "vue";
 import { useRouter } from "vue-router";
 
-import { fetchAdminCaptcha, type AdminCaptcha } from "@/api/adminAuth";
+import { fetchAdminCaptcha, type AdminCaptcha } from "@/features/admin";
 import { useAdminSessionStore } from "@/stores/adminSession";
 
 const router = useRouter();

frontend/src/features/auth/views/LoginView.vue

@@ -4,7 +4,7 @@ import { ChatLineRound, Iphone } from "@element-plus/icons-vue";
 import { onUnmounted, reactive, ref } from "vue";
 import { useRouter } from "vue-router";
 
-import { sendSmsCode } from "@/api/auth";
+import { sendSmsCode } from "@/features/auth/api/auth";
 import { useSessionStore } from "@/stores/session";
 
 const router = useRouter();

frontend/src/features/auth/views/MobileLoginView.vue

@@ -4,7 +4,7 @@ import { RouterLink, useRoute, useRouter } from "vue-router";
 import { showToast, showDialog } from "vant";
 
 import { useSessionStore } from "@/stores/session";
-import { useSmsCountdown } from "@/composables/useSmsCountdown";
+import { useSmsCountdown } from "@/shared/composables/useSmsCountdown";
 
 const router = useRouter();
 const route = useRoute();

frontend/src/features/auth/views/MobileProfileView.vue

@@ -5,9 +5,9 @@ import { useSessionStore } from "@/stores/session";
 import { showDialog, showToast } from "vant";
 import MobileBottomNav from "@/components/MobileBottomNav.vue";
 
-import { fetchWalletBalance, fetchWalletLedger, type WalletLedger } from "@/api/wallet";
+import { fetchWalletBalance, fetchWalletLedger, type WalletLedger } from "@/features/wallet/api/wallet";
 import { formatDateMinute } from "@/utils/time";
-import { uploadFile } from "@/api/files";
+import { uploadFile } from "@/shared/api/files";
 
 const session = useSessionStore();
 const router = useRouter();

frontend/src/features/auth/views/MobileRealnameView.vue

@@ -6,7 +6,7 @@ import {
   getRealnameStatus,
   startRealname,
   type RealnameStatus,
-} from "@/api/realname";
+} from "@/features/auth/api/realname";
 import { realnameStatusLabel } from "@/utils/statusLabels";
 import { useSessionStore } from "@/stores/session";
 import { formatDateTime } from "@/utils/time";

frontend/src/features/auth/views/MobileRegisterView.vue

@@ -4,7 +4,7 @@ import { RouterLink, useRoute, useRouter } from "vue-router";
 import { showToast } from "vant";
 
 import { useSessionStore } from "@/stores/session";
-import { useSmsCountdown } from "@/composables/useSmsCountdown";
+import { useSmsCountdown } from "@/shared/composables/useSmsCountdown";
 
 const router = useRouter();
 const route = useRoute();