Refactor site configuration and color scheme management

- Replaced static config with dynamic site info context.
- Updated color scheme handling in various components to use site info.
- Removed deprecated config file and integrated site info fetching.
- Enhanced user preference page to allow color scheme selection.
- Adjusted blog and console components to reflect new site info structure.
- Improved error handling and fallback mechanisms for site info retrieval.

internal/model/user.go

@@ -1,41 +1,43 @@
 package model
 
 import (
-  "github.com/snowykami/neo-blog/internal/dto"
-  "gorm.io/gorm"
+	"github.com/snowykami/neo-blog/internal/dto"
+	"gorm.io/gorm"
 )
 
 type User struct {
-  gorm.Model
-  Username      string `gorm:"uniqueIndex;not null"` // 用户名，唯一
-  Nickname      string `gorm:"default:''"`           // 昵称
-  AvatarUrl     string
-  BackgroundUrl string
-  Email         string `gorm:"uniqueIndex"`
-  Gender        string `gorm:"default:''"`
-  Role          string `gorm:"default:'user'"` // user editor admin
-  Language      string `gorm:"default:'en'"`
-  Password      string // 密码，存储加密后的值
+	gorm.Model
+	Username       string `gorm:"uniqueIndex;not null"` // 用户名，唯一
+	Nickname       string `gorm:"default:''"`           // 昵称
+	AvatarUrl      string
+	BackgroundUrl  string
+	PreferredColor string `gorm:"default:'global'"` // 主题色
+	Email          string `gorm:"uniqueIndex"`
+	Gender         string `gorm:"default:''"`
+	Role           string `gorm:"default:'user'"` // user editor admin
+	Language       string `gorm:"default:'en'"`
+	Password       string // 密码，存储加密后的值
 }
 
 type UserOpenID struct {
-  gorm.Model
-  UserID uint   `gorm:"index"`
-  User   User   `gorm:"foreignKey:UserID;references:ID"`
-  Issuer string `gorm:"index"` // OIDC Issuer
-  Sub    string `gorm:"index"` // OIDC Sub openid
+	gorm.Model
+	UserID uint   `gorm:"index"`
+	User   User   `gorm:"foreignKey:UserID;references:ID"`
+	Issuer string `gorm:"index"` // OIDC Issuer
+	Sub    string `gorm:"index"` // OIDC Sub openid
 }
 
 func (user *User) ToDto() dto.UserDto {
-  return dto.UserDto{
-    ID:            user.ID,
-    Username:      user.Username,
-    Nickname:      user.Nickname,
-    AvatarUrl:     user.AvatarUrl,
-    BackgroundUrl: user.BackgroundUrl,
-    Email:         user.Email,
-    Gender:        user.Gender,
-    Role:          user.Role,
-    Language:      user.Language,
-  }
+	return dto.UserDto{
+		ID:             user.ID,
+		Username:       user.Username,
+		Nickname:       user.Nickname,
+		AvatarUrl:      user.AvatarUrl,
+		BackgroundUrl:  user.BackgroundUrl,
+		PreferredColor: user.PreferredColor,
+		Email:          user.Email,
+		Gender:         user.Gender,
+		Role:           user.Role,
+		Language:       user.Language,
+	}
 }