feat: 适配新版后端 API 并接入邮箱验证 (#9)

## 概述
本分支对前端进行了大规模适配与升级，核心是对齐新版后端 API 接口，并接入邮箱验证与密码找回流程。

## 主要变更
- **API 适配**：对齐新版后端接口契约，重构 api 客户端与类型定义，移除前端臆造字段
- **认证流程**：接入邮箱验证（确认 / 重发确认）、密码找回（忘记密码 / 重置密码）全流程
- **管理后台**：前端对齐更新后的 API 契约
- **云图鉴**：展示云类型图标图片
- **UI 优化**：图片预览改为直角样式并调整关闭按钮

## 影响范围
- API 层：src/lib/api.ts、src/types/api.ts、src/types/database.ts
- 认证视图：src/views/auth/*
- 管理后台：src/views/admin/AdminView.vue
- 图鉴视图：src/views/encyclopedia/*
- 状态管理：src/stores/*

Reviewed-on: #9

src/types/api.ts

@@ -1,50 +1,84 @@
-import type { Cloud, CloudType, Profile, UserCollection } from '@/types/database'
+import type { Cloud, CloudType, Profile } from '@/types/database'
 
+export interface BackendUserProfile {
+  id: string
+  name: string
+  email: string
+  avatar_id: string | null
+  cloud_count: number
+  received_like_count: number
+  last_online: string | null
+  role: Profile['role']
+  is_disabled: boolean
+  created_at: string
+}
+
+export interface BackendCloudType {
+  id: number
+  name: string
+  genus: string | null
+  icon_id: string | null
+  rarity: number
+  description: string | null
+  created_at: string
+}
+
+export interface BackendCloudOwner {
+  id: string
+  name: string
+}
+
+export interface BackendCloudInfo {
+  id: string
+  owner: BackendCloudOwner
+  type: BackendCloudType
+  latitude: number
+  longitude: number
+  description: string | null
+  captured_at: string | null
+  uploaded_at: string
+  updated_at: string
+  received_like_count: number
+  status: Cloud['status']
+  is_hidden: boolean
+}
+
+export interface ActionResponse {
+  status_code: number
+  message: string
+}
+
+export interface RegisterResponse extends ActionResponse {
+  email_sent: boolean
+}
+
+export interface LoginResponse {
+  access_token: string
+}
+
+export interface CloudCreateResponse extends ActionResponse {
+  cloud_id: string
+}
+
+// Internal view model. The backend profile is normalized here so existing
+// layout/admin consumers do not need to understand the wire representation.
 export interface AuthUser {
   id: string
   email: string
-  email_verified: boolean
   username: string
-  avatar_url: string | null
+  avatar_id: string | null
   role: Profile['role']
   is_disabled: boolean
   cloud_count: number
-  public_cloud_count: number
-  collection_count: number
+  received_like_count: number
   created_at: string
 }
 
-export interface AuthResponse {
-  access_token: string
-  token_type: 'bearer'
-  expires_in: number
-  user: AuthUser
-}
-
-export interface MeResponse {
-  user: AuthUser
-}
-
-export interface PublicProfile {
-  id: string
-  username: string
-  avatar_url: string | null
-  created_at: string
-}
-
-export interface ApiPage<T> {
-  items: T[]
-  page: number
-  page_size: number
-  total: number
-  total_pages: number
-}
-
 export interface ApiCloudTypeSummary {
   id: number
   name: string
-  name_en: string
   rarity: CloudType['rarity']
+  rarity_value: number
 }
 
 export interface ApiCloudOwner {
@@ -58,58 +92,7 @@ export interface ApiCloud extends Cloud {
   owner: ApiCloudOwner | null
   cloud_type_name: string | null
   cloud_type_rarity: CloudType['rarity'] | null
+  cloud_type_rarity_value: number | null
   username: string | null
-  favorite_count: number
-  is_favorited: boolean
-}
-
-export interface LikeStatsPhoto {
-  cloud_id: string
-  image_url: string
-  thumbnail_url: string
-  favorite_count: number
-  captured_at: string | null
-  created_at: string
-}
-
-export interface LikeStats {
-  user_id: string
-  username: string
-  total_likes: number
-  photos: LikeStatsPhoto[]
-}
-
-export interface ApiCollection extends UserCollection {
-  cloud_type: ApiCloudTypeSummary
-  first_cloud: Pick<
-    ApiCloud,
-    'id' | 'image_url' | 'thumbnail_url' | 'captured_at' | 'created_at' | 'location_name'
-  > | null
-}
-
-export interface UnlockedBadge {
-  cloud_type_id: number
-  cloud_name: string
-  cloud_name_en: string
-  rarity: CloudType['rarity']
-  unlocked_at: string
-}
-
-export interface CloudCreateResponse {
-  cloud: ApiCloud
-  unlocked_badge: UnlockedBadge | null
-}
-
-export interface AdminStats {
-  users: number
-  images: number
-  today_uploads: number
-  pending: number
-  approved: number
-  rejected: number
-  hidden: number
-}
-
-export interface AdminUserItem {
-  user: AuthUser
+  received_like_count: number
 }