release: prepare v0.1.140

backend/cmd/server/VERSION

@@ -1 +1 @@
-0.1.139
+0.1.140

backend/internal/handler/admin/setting_handler.go

@@ -1151,6 +1151,14 @@ func (h *SettingHandler) UpdateSettings(c *gin.Context) {
 				response.BadRequest(c, "Custom menu item placement must be 'sidebar', 'home_header' or 'both'")
 				return
 			}
+			switch item.LinkOpenMode {
+			case "", "internal":
+				items[i].LinkOpenMode = "internal"
+			case "external":
+			default:
+				response.BadRequest(c, "Custom menu item link open mode must be 'internal' or 'external'")
+				return
+			}
 			if len(item.IconSVG) > maxMenuItemIconSVGLen {
 				response.BadRequest(c, "Custom menu item icon SVG is too large (max 10KB)")
 				return

backend/internal/handler/dto/settings.go

@@ -7,14 +7,15 @@ import (
 
 // CustomMenuItem represents a user-configured custom menu entry.
 type CustomMenuItem struct {
-	ID         string `json:"id"`
-	Label      string `json:"label"`
-	IconSVG    string `json:"icon_svg"`
-	URL        string `json:"url"`
-	PageSlug   string `json:"page_slug,omitempty"`
-	Visibility string `json:"visibility"` // "user" or "admin"
-	Placement  string `json:"placement,omitempty"`
-	SortOrder  int    `json:"sort_order"`
+	ID           string `json:"id"`
+	Label        string `json:"label"`
+	IconSVG      string `json:"icon_svg"`
+	URL          string `json:"url"`
+	PageSlug     string `json:"page_slug,omitempty"`
+	Visibility   string `json:"visibility"` // "user" or "admin"
+	Placement    string `json:"placement,omitempty"`
+	LinkOpenMode string `json:"link_open_mode,omitempty"`
+	SortOrder    int    `json:"sort_order"`
 }
 
 // CustomEndpoint represents an admin-configured API endpoint for quick copy.
@@ -371,6 +372,7 @@ func ParseCustomMenuItems(raw string) []CustomMenuItem {
 	}
 	for i := range items {
 		items[i].Placement = normalizeCustomMenuPlacement(items[i].Placement)
+		items[i].LinkOpenMode = normalizeCustomMenuLinkOpenMode(items[i].LinkOpenMode)
 	}
 	return items
 }
@@ -388,6 +390,17 @@ func normalizeCustomMenuPlacement(raw string) string {
 	}
 }
 
+func normalizeCustomMenuLinkOpenMode(raw string) string {
+	switch strings.TrimSpace(raw) {
+	case "", "internal":
+		return "internal"
+	case "external":
+		return "external"
+	default:
+		return "internal"
+	}
+}
+
 // ParseUserVisibleMenuItems parses custom menu items and filters out admin-only entries.
 func ParseUserVisibleMenuItems(raw string) []CustomMenuItem {
 	items := ParseCustomMenuItems(raw)

backend/internal/service/setting_service.go

@@ -1218,6 +1218,14 @@ func normalizeCustomMenuItemsRaw(raw string) json.RawMessage {
 		default:
 			item["placement"] = "sidebar"
 		}
+		linkOpenMode, _ := item["link_open_mode"].(string)
+		switch strings.TrimSpace(linkOpenMode) {
+		case "", "internal":
+			item["link_open_mode"] = "internal"
+		case "external":
+		default:
+			item["link_open_mode"] = "internal"
+		}
 	}
 	normalized, err := json.Marshal(items)
 	if err != nil {