fix tree

apps/client/src/ee/template/components/template-picker-modal.module.css

@@ -1,4 +1,5 @@
 .row {
+    position: relative;
     display: flex;
     align-items: center;
     gap: var(--mantine-spacing-sm);
@@ -38,12 +39,21 @@
     color: light-dark(var(--mantine-color-gray-6), var(--mantine-color-dark-2));
     font-size: var(--mantine-font-size-xs);
     flex-shrink: 0;
+    transition: opacity 100ms ease;
+
+    .row:hover &,
+    .row:focus-within & {
+        opacity: 0;
+    }
 }
 
 .useButton {
+    position: absolute;
+    top: 50%;
+    right: var(--mantine-spacing-sm);
+    transform: translateY(-50%);
     opacity: 0;
     transition: opacity 100ms ease;
-    flex-shrink: 0;
 
     .row:hover &,
     .row:focus-within &,

apps/client/src/ee/template/queries/template-query.ts

@@ -6,6 +6,7 @@ import {
   UseQueryResult,
   InfiniteData,
 } from "@tanstack/react-query";
+import { useAtom, useStore } from "jotai";
 import {
   getTemplates,
   getTemplateById,
@@ -18,6 +19,12 @@ import { ITemplate } from "@/ee/template/types/template.types";
 import { IPagination } from "@/lib/types.ts";
 import { notifications } from "@mantine/notifications";
 import { useTranslation } from "react-i18next";
+import { invalidateOnCreatePage } from "@/features/page/queries/page-query.ts";
+import { treeDataAtom } from "@/features/page/tree/atoms/tree-data-atom.ts";
+import { treeModel } from "@/features/page/tree/model/tree-model";
+import { SpaceTreeNode } from "@/features/page/tree/types.ts";
+import { IPage } from "@/features/page/types/page.types.ts";
+import { useQueryEmit } from "@/features/websocket/use-query-emit.ts";
 
 export function useGetTemplatesQuery(params?: { spaceId?: string }) {
   const { spaceId } = params ?? {};
@@ -149,13 +156,64 @@ export function useDeleteTemplateMutation() {
 
 export function useUseTemplateMutation() {
   const { t } = useTranslation();
+  const [, setTreeData] = useAtom(treeDataAtom);
+  const store = useStore();
+  const emit = useQueryEmit();
 
-  return useMutation({
-    mutationFn: (data: {
-      templateId: string;
-      spaceId: string;
-      parentPageId?: string;
-    }) => useTemplate(data),
+  return useMutation<
+    IPage,
+    Error,
+    { templateId: string; spaceId: string; parentPageId?: string }
+  >({
+    mutationFn: (data) => useTemplate(data),
+    onSuccess: (page) => {
+      // React Query sidebar-pages cache update (same path useCreatePageMutation takes).
+      invalidateOnCreatePage(page);
+
+      const parentId = page.parentPageId ?? null;
+      const newNode: SpaceTreeNode = {
+        id: page.id,
+        slugId: page.slugId,
+        name: page.title,
+        icon: page.icon,
+        position: page.position,
+        spaceId: page.spaceId,
+        parentPageId: page.parentPageId,
+        hasChildren: false,
+        children: [],
+      };
+
+      // Only mutate the tree atom and broadcast if it currently represents
+      // this space. Cross-space template-use (e.g., from the gallery picking
+      // a different space) lets the target space's clients pick up the new
+      // page on their next React Query refetch (focus, navigation, etc.).
+      // Without this guard we'd both pollute the local tree and send a wrong
+      // `index` to remote clients in the target space.
+      const current = store.get(treeDataAtom);
+      const treeIsForThisSpace = current[0]?.spaceId === page.spaceId;
+      if (!treeIsForThisSpace) return;
+
+      const lastIndex =
+        parentId === null
+          ? current.length
+          : (treeModel.find(current, parentId)?.children?.length ?? 0);
+
+      setTreeData((prev) =>
+        treeModel.insert(prev, parentId, newNode, lastIndex),
+      );
+
+      setTimeout(() => {
+        emit({
+          operation: "addTreeNode",
+          spaceId: page.spaceId,
+          payload: {
+            parentId,
+            index: lastIndex,
+            data: newNode,
+          },
+        });
+      }, 50);
+    },
     onError: (error) => {
       const errorMessage = error["response"]?.data?.message;
       notifications.show({

apps/client/src/ee/template/services/template-service.ts

@@ -1,5 +1,6 @@
 import api from "@/lib/api-client";
 import { ITemplate } from "@/ee/template/types/template.types";
+import { IPage } from "@/features/page/types/page.types";
 import { IPagination } from "@/lib/types.ts";
 
 export async function getTemplates(params?: {
@@ -40,7 +41,7 @@ export async function useTemplate(data: {
   templateId: string;
   spaceId: string;
   parentPageId?: string;
-}): Promise<any> {
-  const req = await api.post("/templates/use", data);
+}): Promise<IPage> {
+  const req = await api.post<IPage>("/templates/use", data);
   return req.data;
 }