Initial commit: TaskPool React panel

- React frontend with route-level code splitting
- Backend rebranded from Baihu to TaskPool
- DB brand migration script and local compatibility

internal/models/user.go

@@ -0,0 +1,21 @@
+package models
+
+import (
+	"github.com/engigu/taskpool/internal/constant"
+)
+
+// User represents a system user
+type User struct {
+	ID           string    `json:"id" gorm:"primaryKey;size:20"`
+	Username     string    `json:"username" gorm:"size:100;uniqueIndex;not null"`
+	Password     string    `json:"password" gorm:"size:255;not null"`
+	Email        string    `json:"email" gorm:"size:255"`
+	Role         string    `json:"role" gorm:"size:20;default:user"` // admin, user
+	TokenVersion int       `json:"-" gorm:"default:1"`               // 用于 JWT 失效校验
+	CreatedAt    LocalTime `json:"created_at"`
+	UpdatedAt    LocalTime `json:"updated_at"`
+}
+
+func (User) TableName() string {
+	return constant.TablePrefix + "users"
+}