feat: 新增门户功能并重构资源展示组件

- 新增门户（Portal）数据模型与后端 API 端点
- 新增个人资料页面，支持用户更新昵称
- 重构前端资源卡片组件，支持显示 GitHub 版本信息与加速下载链接
- 在登录/注册页面添加 GitHub OAuth 支持
- 更新环境变量示例文件，添加前后端配置项
- 优化导航栏响应式设计，添加移动端菜单
- 添加页脚组件，包含备案信息
- 更新 Prisma 数据模型，适配 Better Auth 并添加种子数据
- 统一前后端 API URL 配置，支持环境变量覆盖

backend/prisma/schema.prisma

@@ -11,49 +11,54 @@ datasource db {
 
 model User {
   id            String    @id @default(cuid())
-  name          String?
-  email         String?   @unique
-  emailVerified DateTime?
-  phone         String?   @unique
-  phoneVerified DateTime?
+  name          String
+  email         String    @unique
+  emailVerified Boolean
   image         String?
-  createdAt     DateTime  @default(now())
-  updatedAt     DateTime  @updatedAt
-  accounts      Account[]
+  createdAt     DateTime
+  updatedAt     DateTime
   sessions      Session[]
+  accounts      Account[]
   posts         Post[]
   comments      Comment[]
-
-  @@map("users")
-}
-
-model Account {
-  id                 String  @id @default(cuid())
-  userId             String  @map("user_id")
-  type               String
-  provider           String
-  providerAccountId  String  @map("provider_account_id")
-  refresh_token      String?
-  access_token       String?
-  expires_at         Int?
-  token_type         String?
-  scope              String?
-  id_token           String?
-  session_state      String?
-  user      User    @relation(fields: [userId], references: [id], onDelete: Cascade)
-
-  @@unique([provider, providerAccountId])
-  @@map("accounts")
 }
 
 model Session {
-  id           String   @id @default(cuid())
-  sessionToken String   @unique @map("session_token")
-  userId       String   @map("user_id")
-  expires      DateTime
-  user         User     @relation(fields: [userId], references: [id], onDelete: Cascade)
+  id        String   @id @default(cuid())
+  expiresAt DateTime
+  token     String   @unique
+  createdAt DateTime
+  updatedAt DateTime
+  ipAddress String?
+  userAgent String?
+  userId    String
+  user      User     @relation(fields: [userId], references: [id], onDelete: Cascade)
+}
 
-  @@map("sessions")
+model Account {
+  id                    String    @id @default(cuid())
+  accountId             String
+  providerId            String
+  userId                String
+  user                  User      @relation(fields: [userId], references: [id], onDelete: Cascade)
+  accessToken           String?
+  refreshToken          String?
+  idToken               String?
+  accessTokenExpiresAt  DateTime?
+  refreshTokenExpiresAt DateTime?
+  scope                 String?
+  password              String?
+  createdAt             DateTime
+  updatedAt             DateTime
+}
+
+model Verification {
+  id         String    @id @default(cuid())
+  identifier String
+  value      String
+  expiresAt  DateTime
+  createdAt  DateTime?
+  updatedAt  DateTime?
 }
 
 model Post {
@@ -66,21 +71,36 @@ model Post {
   updatedAt DateTime  @updatedAt
   user      User      @relation(fields: [userId], references: [id], onDelete: Cascade)
   comments  Comment[]
-
-  @@map("posts")
 }
 
 model Resource {
+  id               String   @id @default(cuid())
+  title            String
+  description      String?
+  url              String
+  icon             String?
+  image            String?
+  category         String?
+  githubRepo       String?
+  downloadCdn      String?
+  downloadOriginal String?
+  version          String?
+  background       Boolean  @default(false)
+  order            Int      @default(0)
+  createdAt        DateTime @default(now())
+  updatedAt        DateTime @updatedAt
+}
+
+model Portal {
   id          String   @id @default(cuid())
   title       String
-  description String?
   url         String
+  description String?
   icon        String?
-  category    String?
+  background  Boolean  @default(false)
+  order       Int      @default(0)
   createdAt   DateTime @default(now())
   updatedAt   DateTime @updatedAt
-
-  @@map("resources")
 }
 
 model Comment {
@@ -92,15 +112,4 @@ model Comment {
   updatedAt DateTime  @updatedAt
   user      User      @relation(fields: [userId], references: [id], onDelete: Cascade)
   post      Post      @relation(fields: [postId], references: [id], onDelete: Cascade)
-
-  @@map("comments")
-}
-
-model VerificationToken {
-  identifier String
-  token      String   @unique
-  expires    DateTime
-
-  @@unique([identifier, token])
-  @@map("verification_tokens")
 }