chore: replace gin with standard lib net/http

internal/domain/context.go

@@ -4,8 +4,6 @@ import (
 	"context"
 	"fmt"
 	"log/slog"
-
-	"github.com/gin-gonic/gin"
 )
 
 const CtxUserInfo = "userInfo"
@@ -47,21 +45,6 @@ func SystemAdminContextUserInfo() *ContextUserInfo {
 	}
 }
 
-// SetUserInfoFromGin sets the user info from the gin context to the request context.
-func SetUserInfoFromGin(c *gin.Context) context.Context {
-	ginUserInfo, exists := c.Get(CtxUserInfo)
-
-	info := DefaultContextUserInfo()
-	if exists {
-		if ginInfo, ok := ginUserInfo.(*ContextUserInfo); ok {
-			info = ginInfo
-		}
-	}
-
-	ctx := SetUserInfo(c.Request.Context(), info)
-	return ctx
-}
-
 // SetUserInfo sets the user info in the context.
 func SetUserInfo(ctx context.Context, info *ContextUserInfo) context.Context {
 	ctx = context.WithValue(ctx, CtxUserInfo, info)