refactor: Gitea 式目录改组，移除本分支 SPA 与杂项产物

将 model/service/handler/middleware 迁至 models/services/routers/api/modules/auth，并删除 frontend、embed_static、scripts 及误入库缓存/二进制。

Co-authored-by: Cursor <cursoragent@cursor.com>

models/gitea.go

@@ -0,0 +1,27 @@
+package model
+
+import "time"
+
+// GiteaRepo 从 Gitea 同步的公开仓库缓存（侧栏 /projects 读取）
+type GiteaRepo struct {
+	ID              uint       `gorm:"primaryKey" json:"id"`
+	GiteaID         int64      `gorm:"uniqueIndex;not null" json:"gitea_id"`
+	OwnerLogin      string     `gorm:"size:128;not null;index" json:"owner_login"`
+	Name            string     `gorm:"size:255;not null" json:"name"`
+	FullName        string     `gorm:"size:512;not null" json:"full_name"`
+	Description     string     `gorm:"size:2048;default:''" json:"description"`
+	HTMLURL         string     `gorm:"size:1024;not null" json:"html_url"`
+	Language        string     `gorm:"size:64;default:''" json:"language"`
+	StarsCount      int        `gorm:"default:0" json:"stars_count"`
+	ForksCount      int        `gorm:"default:0" json:"forks_count"`
+	Private         bool       `gorm:"default:false" json:"private"`
+	UpdatedAtRemote *time.Time `json:"updated_at_remote"`
+	ForumUserID     *uint      `gorm:"index" json:"forum_user_id"`
+	SyncedAt        time.Time  `json:"synced_at"`
+	CreatedAt       time.Time  `json:"created_at"`
+	UpdatedAt       time.Time  `json:"updated_at"`
+}
+
+func (GiteaRepo) TableName() string {
+	return "gitea_repos"
+}