Add Show Widget for library actions with Overview charts from last run output.

service/internal/api/action_widgets_handlers.go

@@ -0,0 +1,26 @@
+package api
+
+import (
+	"net/http"
+
+	"codeberg.org/SquidSE/ClusterCanvas/service/internal/settings"
+)
+
+type actionWidgetsResponse struct {
+	Widgets []settings.ActionWidgetSnapshot `json:"widgets"`
+}
+
+func (app *App) actionWidgetsListHandler(writer http.ResponseWriter, request *http.Request) {
+	node, ok := app.loadAccessibleNode(writer, request)
+	if !ok {
+		return
+	}
+	store, err := settings.LoadActionWidgetsOrEmpty(app.ConfigDir)
+	if err != nil {
+		writeJSON(writer, http.StatusInternalServerError, apiErrorResponse{Error: err.Error()})
+		return
+	}
+	writeJSON(writer, http.StatusOK, actionWidgetsResponse{
+		Widgets: settings.WidgetsForNode(store, node.ID),
+	})
+}