Remeber recently used model

src/components/Layouts/Layout.tsx

@@ -107,7 +107,10 @@ export default function OptionLayout({
               <div>
                 <Select
                   value={selectedModel}
-                  onChange={setSelectedModel}
+                  onChange={(e) =>  {
+                    setSelectedModel(e)
+                    localStorage.setItem("selectedModel", e)
+                  }}
                   size="large"
                   loading={isModelsLoading || isModelsFetching}
                   filterOption={(input, option) =>

src/components/Option/Knowledge/index.tsx

@@ -96,7 +96,7 @@ export const KnowledgeSettings = () => {
                         onClick={() => {
                           if (window.confirm(t("confirm.delete"))) {
                             deleteKnowledgeMutation(record.id)
-                            if (selectedKnowledge.id === record.id) {
+                            if (selectedKnowledge?.id === record?.id) {
                               setSelectedKnowledge(null)
                             }
                           }

src/components/Sidepanel/Chat/empty.tsx

@@ -97,6 +97,7 @@ export const EmptySidePanel = () => {
             <Select
               onChange={(e) => {
                 setSelectedModel(e)
+                localStorage.setItem("selectedModel", e)
               }}
               value={selectedModel}
               size="large"