i18n: Translate all Chinese to English across the codebase

Translate Chinese comments, log/error messages, validator labels and
Swagger annotations to English throughout the source code, generated
Swagger docs, config files and CI workflows.

Make the English README primary: README.md now holds the English docs
and README_EN.md holds the Chinese version, with cross-language links
updated accordingly.

Note: the generated docs/ swagger files were translated in place; run
`go generate ./...` (swag init) to regenerate them from the now-English
annotations when a Go toolchain is available.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

http/request/admin/addressBook.go

@@ -27,7 +27,7 @@ type AddressBookForm struct {
 }
 
 func (a AddressBookForm) ToAddressBook() *model.AddressBook {
-	//tags转换
+	//tagsconvert
 	tags, _ := json.Marshal(a.Tags)
 
 	return &model.AddressBook{
@@ -52,7 +52,7 @@ func (a AddressBookForm) ToAddressBook() *model.AddressBook {
 
 }
 func (a AddressBookForm) ToAddressBooks() []*model.AddressBook {
-	//tags转换
+	//tagsconvert
 	tags, _ := json.Marshal(a.Tags)
 
 	abs := make([]*model.AddressBook, 0, len(a.UserIds))
@@ -92,7 +92,7 @@ type AddressBookQuery struct {
 
 type ShareByWebClientForm struct {
 	Id           string `json:"id" validate:"required"`
-	PasswordType string `json:"password_type" validate:"required,oneof=once fixed"` //只能是once,fixed
+	PasswordType string `json:"password_type" validate:"required,oneof=once fixed"` //can only be once,fixed
 	Password     string `json:"password" validate:"required"`
 	Expire       int64  `json:"expire"`
 }

http/request/admin/login.go

@@ -1,10 +1,10 @@
 package admin
 
 type Login struct {
-	Username  string `json:"username" validate:"required" label:"用户名"`
-	Password  string `json:"password,omitempty" validate:"required" label:"密码"`
-	Platform  string `json:"platform" label:"平台"`
-	Captcha   string `json:"captcha,omitempty" label:"验证码"`
+	Username  string `json:"username" validate:"required" label:"username"`
+	Password  string `json:"password,omitempty" validate:"required" label:"password"`
+	Platform  string `json:"platform" label:"platform"`
+	Captcha   string `json:"captcha,omitempty" label:"captcha"`
 	CaptchaId string `json:"captcha_id,omitempty"`
 }
 

http/request/admin/user.go

@@ -7,7 +7,7 @@ import (
 type UserForm struct {
 	Id       uint   `json:"id"`
 	Username string `json:"username" validate:"required,gte=2,lte=32"`
-	Email    string `json:"email"` //validate:"required,email" email不强制
+	Email    string `json:"email"` //validate:"required,email" emailnot enforced
 	//Password string           `json:"password" validate:"required,gte=4,lte=20"`
 	Nickname string           `json:"nickname"`
 	Avatar   string           `json:"avatar"`