refactor: 一批名不副实的命名改掉（只动一端，不碰契约）

后端：
- getUserByToken → authenticateToken：它会删会话、续 TTL、记在线，不是纯读
- todayStart → dayStart(instant)：本来就接受任意时刻，不只是「今天」
- objectValue → asRecord，删掉 4 份一模一样的私有拷贝和 `as toObject` 别名
- 报错文案 "does not exists" / "Already be a public problem" 改通顺

前端：
- utils/types 里 Contest / User / Problem 三个别名删掉：Contest 原来指后台
  比赛、契约里同名的却是学生侧。现在 Contest = 学生侧、AdminContest = 后台，
  后台用户表单叫 AdminUserForm，题目详情直接用 ProblemDetail
- SubmissionInfo → ContestSubmissionInfo，免得和 submission.info 撞名
- utoa / atou → compressToBase64 / decompressFromBase64（实际是 zlib + base64），
  encode / decode → base64EncodeUtf8 / base64DecodeUtf8
- filterResult → toProblemRow、toProblemListItem → toAdminProblemRow，
  行字段 submission / rate → submissionCount / acRate
- 组件：Modal → AddFromLibraryModal、Form → EditorToolbar、
  ContestEditor → BasicEditor（题单也在用它）、rank 的 Index → RankMedal、
  Name → UserNameCell、Password → PasswordCell、ContestType → ContestAccessTag

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

apps/web/src/admin/user/components/Actions.vue

@@ -1,16 +1,16 @@
 <script lang="ts" setup>
 import { editUser } from "admin/api"
-import type { User } from "utils/types"
+import type { AdminUserForm } from "utils/types"
 
 interface Props {
-  user: User
+  user: AdminUserForm
 }
 const props = defineProps<Props>()
 const emit = defineEmits<{
   (e: "deleteUser", value: number[]): void
-  (e: "userBanned", value: User): void
-  (e: "openEditModal", value: User): void
-  (e: "resetPassword", value: User): void
+  (e: "userBanned", value: AdminUserForm): void
+  (e: "openEditModal", value: AdminUserForm): void
+  (e: "resetPassword", value: AdminUserForm): void
 }>()
 
 async function banUser() {

apps/web/src/admin/user/components/PasswordCell.vue

@@ -1,10 +1,10 @@
 <script lang="ts" setup>
 import TextCopy from "shared/components/TextCopy.vue"
 import { USER_TYPE } from "utils/constants"
-import type { User } from "utils/types"
+import type { AdminUserForm } from "utils/types"
 
 interface Props {
-  user: User
+  user: AdminUserForm
   revealed: boolean
 }
 const props = defineProps<Props>()

apps/web/src/admin/user/components/UserNameCell.vue

@@ -1,14 +1,14 @@
 <script setup lang="ts">
 import { PROBLEM_PERMISSION, USER_TYPE } from "utils/constants"
 import { getUserRole } from "utils/functions"
-import type { User } from "utils/types"
+import type { AdminUserForm } from "utils/types"
 import TextCopy from "shared/components/TextCopy.vue"
 
 interface Props {
-  user: User
+  user: AdminUserForm
 }
 const props = defineProps<Props>()
-const isNotRegularUser = computed(
+const hasRoleTag = computed(
   () => props.user.adminType !== USER_TYPE.REGULAR_USER,
 )
 </script>
@@ -18,7 +18,7 @@ const isNotRegularUser = computed(
       封号中
     </n-tag>
     <n-tag
-      v-if="isNotRegularUser"
+      v-if="hasRoleTag"
       :type="getUserRole(props.user.adminType).type"
       size="small"
     >