Initial commit: Gitea Project Management System

Features:
- Complete project management system with Epic/Story/Task hierarchy
- Vue.js 3 + Element Plus frontend with kanban board
- Go backend with Gin framework and GORM
- OAuth2 integration with Gitea
- Docker containerization with MySQL
- RESTful API for project, task, and user management
- JWT authentication and authorization
- Responsive web interface with dashboard

internal/api/handlers/handlers.go

@@ -0,0 +1,60 @@
+package handlers
+
+import (
+	"giteapm/config"
+
+	"gorm.io/gorm"
+)
+
+type Handlers struct {
+	DB  *gorm.DB
+	Cfg *config.Config
+}
+
+func NewHandlers(db *gorm.DB, cfg *config.Config) *Handlers {
+	return &Handlers{
+		DB:  db,
+		Cfg: cfg,
+	}
+}
+
+type Response struct {
+	Code    int         `json:"code"`
+	Message string      `json:"message"`
+	Data    interface{} `json:"data,omitempty"`
+}
+
+type PaginatedResponse struct {
+	Code    int         `json:"code"`
+	Message string      `json:"message"`
+	Data    interface{} `json:"data"`
+	Total   int64       `json:"total"`
+	Page    int         `json:"page"`
+	Limit   int         `json:"limit"`
+}
+
+func SuccessResponse(data interface{}) Response {
+	return Response{
+		Code:    200,
+		Message: "success",
+		Data:    data,
+	}
+}
+
+func ErrorResponse(code int, message string) Response {
+	return Response{
+		Code:    code,
+		Message: message,
+	}
+}
+
+func PaginatedSuccessResponse(data interface{}, total int64, page, limit int) PaginatedResponse {
+	return PaginatedResponse{
+		Code:    200,
+		Message: "success",
+		Data:    data,
+		Total:   total,
+		Page:    page,
+		Limit:   limit,
+	}
+}