feat: rebuild board grid experience

apps/nextjs/src/app/[locale]/boards/(content)/_client.module.css

@@ -0,0 +1,20 @@
+.columns {
+  display: grid;
+  align-items: start;
+  gap: 24px;
+}
+
+.lane {
+  min-width: 0;
+}
+
+.gutter {
+  position: sticky;
+  top: 0;
+  align-self: start;
+  max-height: calc(100dvh - var(--app-shell-header-offset, 0px) - var(--mantine-spacing-md));
+  overflow-y: auto;
+  overscroll-behavior: contain;
+  scrollbar-gutter: stable;
+  transform: translateY(var(--board-gutter-sticky-offset, 0px));
+}

apps/nextjs/src/app/[locale]/boards/(content)/_client.tsx

@@ -1,33 +1,121 @@
 "use client";
 
-import { Box, Stack } from "@mantine/core";
+import { Box } from "@mantine/core";
 
-import { useCurrentLayout, useRequiredBoard } from "@homarr/boards/context";
+import { useCurrentLayout, useInitialViewportWidth, useRequiredBoard } from "@homarr/boards/context";
+import { useEditMode } from "@homarr/boards/edit-mode";
+import { useScopedI18n } from "@homarr/translation/client";
 
-import { BoardCategorySection } from "~/components/board/sections/category-section";
+import {
+  getBoardLaneColumnCount,
+  getInitialBoardLogicalHeight,
+  getLogicalTrackSize,
+  LOGICAL_GRID_GAP,
+  getRootSectionForLane,
+} from "~/components/board/layout";
+import { ScaledBoardCanvas } from "~/components/board/layout/scaled-board-canvas";
 import { BoardEmptySection } from "~/components/board/sections/empty-section";
+import { BoardGridEditorBoundary } from "~/components/board/sections/grid/board-grid-editor-boundary";
+import { BoardGridPortalHost, BoardGridPortalRenderer } from "~/components/board/sections/grid/grid-portal-host";
+import { BoardSectionCollapseProvider } from "~/components/board/sections/section-collapse";
 import { BoardBackgroundVideo } from "~/components/layout/background";
+import classes from "./_client.module.css";
+
+const APP_SHELL_INLINE_PADDING = 32;
 
 export const ClientBoard = () => {
   const board = useRequiredBoard();
+  const t = useScopedI18n("board.landmark");
+  const [isEditMode] = useEditMode();
   const currentLayoutId = useCurrentLayout();
+  const initialViewportWidth = useInitialViewportWidth();
+  const currentLayout = board.layouts.find((layout) => layout.id === currentLayoutId) ?? board.layouts.at(0);
+  if (!currentLayout) throw new Error("Expected the board to contain a layout");
 
-  const fullWidthSortedSections = board.sections
-    .filter((section) => section.kind === "empty" || section.kind === "category")
-    .toSorted((sectionA, sectionB) => sectionA.yOffset - sectionB.yOffset);
+  const mainSection = getRootSectionForLane(board, "main");
+  const leftSection = getRootSectionForLane(board, "left");
+  const rightSection = getRootSectionForLane(board, "right");
+  if (!mainSection) throw new Error("Expected the board to contain a main canvas section");
+
+  const leftColumnCount = getBoardLaneColumnCount(currentLayout, "left");
+  const mainColumnCount = getBoardLaneColumnCount(currentLayout, "main");
+  const rightColumnCount = getBoardLaneColumnCount(currentLayout, "right");
+  const laneWidths = [leftColumnCount, mainColumnCount, rightColumnCount]
+    .filter((columnCount) => columnCount > 0)
+    .map(getLogicalTrackSize);
+  const logicalWidth =
+    laneWidths.reduce((total, width) => total + width, 0) + (laneWidths.length - 1) * LOGICAL_GRID_GAP;
+  const initialLogicalHeight = getInitialBoardLogicalHeight(board, currentLayoutId) + LOGICAL_GRID_GAP;
+  const initialAvailableWidth = Math.max(1, initialViewportWidth - APP_SHELL_INLINE_PADDING);
+  const gridTemplateColumns = [
+    leftColumnCount > 0 ? `${getLogicalTrackSize(leftColumnCount)}px` : null,
+    `${getLogicalTrackSize(mainColumnCount)}px`,
+    rightColumnCount > 0 ? `${getLogicalTrackSize(rightColumnCount)}px` : null,
+  ]
+    .filter((value) => value !== null)
+    .join(" ");
 
   return (
     <Box h="100%" pos="relative" data-homarr-dev-benchmark-board>
       <BoardBackgroundVideo />
-      <Stack h="100%">
-        {fullWidthSortedSections.map((section) =>
-          section.kind === "empty" ? (
-            <BoardEmptySection key={`${currentLayoutId}-${section.id}`} section={section} />
-          ) : (
-            <BoardCategorySection key={`${currentLayoutId}-${section.id}`} section={section} />
-          ),
-        )}
-      </Stack>
+      <BoardSectionCollapseProvider>
+        <BoardGridPortalHost>
+          <ScaledBoardCanvas
+            logicalWidth={logicalWidth}
+            initialLogicalHeight={initialLogicalHeight}
+            initialAvailableWidth={initialAvailableWidth}
+            label={board.name}
+          >
+            <BoardGridEditorBoundary key={currentLayoutId}>
+              <BoardGridPortalRenderer />
+              <div className={classes.columns} style={{ gridTemplateColumns, paddingTop: LOGICAL_GRID_GAP }}>
+                {leftColumnCount > 0 && leftSection && (
+                  <aside
+                    className={`${classes.lane} ${classes.gutter}`}
+                    aria-label={t("leftRail")}
+                    data-board-gutter="left"
+                    data-board-editing={isEditMode ? "true" : undefined}
+                  >
+                    <BoardEmptySection
+                      key={`${currentLayoutId}-${leftSection.id}`}
+                      section={leftSection}
+                      columnCount={leftColumnCount}
+                      requestedRowCount={0}
+                      railPlacement="left"
+                    />
+                  </aside>
+                )}
+
+                <section className={classes.lane} aria-label={t("canvas")}>
+                  <BoardEmptySection
+                    key={`${currentLayoutId}-${mainSection.id}`}
+                    section={mainSection}
+                    columnCount={mainColumnCount}
+                    requestedRowCount={0}
+                  />
+                </section>
+
+                {rightColumnCount > 0 && rightSection && (
+                  <aside
+                    className={`${classes.lane} ${classes.gutter}`}
+                    aria-label={t("rightRail")}
+                    data-board-gutter="right"
+                    data-board-editing={isEditMode ? "true" : undefined}
+                  >
+                    <BoardEmptySection
+                      key={`${currentLayoutId}-${rightSection.id}`}
+                      section={rightSection}
+                      columnCount={rightColumnCount}
+                      requestedRowCount={0}
+                      railPlacement="right"
+                    />
+                  </aside>
+                )}
+              </div>
+            </BoardGridEditorBoundary>
+          </ScaledBoardCanvas>
+        </BoardGridPortalHost>
+      </BoardSectionCollapseProvider>
     </Box>
   );
 };

apps/nextjs/src/app/[locale]/boards/(content)/_creator.tsx

@@ -2,9 +2,6 @@ import type { Metadata } from "next";
 import { cache } from "react";
 import { TRPCError } from "@trpc/server";
 
-// Placed here because gridstack styles are used for board content
-import "~/styles/gridstack.scss";
-
 import { dehydrate, HydrationBoundary } from "@tanstack/react-query";
 import { makeQueryClient } from "@homarr/api/shared";
 import { IntegrationProvider } from "@homarr/auth/client";
@@ -21,7 +18,7 @@ import { createMetaTitle } from "~/metadata";
 import { env } from "~/env";
 import { createBoardLayout } from "../_layout-creator";
 import type { Board, Item } from "../_types";
-import { DynamicClientBoard } from "./_dynamic-client";
+import { ClientBoard } from "./_client";
 import { BoardContentHeaderActions } from "./_header-actions";
 
 const logger = createLogger({ module: "createBoardContentPage" });
@@ -76,7 +73,7 @@ export const createBoardContentPage = <TParams extends Record<string, unknown>>(
       return (
         <HydrationBoundary state={dehydrate(queryClient)}>
           <IntegrationProvider integrations={integrations}>
-            <DynamicClientBoard />
+            <ClientBoard />
           </IntegrationProvider>
         </HydrationBoundary>
       );

apps/nextjs/src/app/[locale]/boards/(content)/_dynamic-client.tsx

@@ -1,24 +0,0 @@
-"use client";
-
-import dynamic from "next/dynamic";
-import { SimpleGrid, Skeleton, Stack } from "@mantine/core";
-
-const BoardLoadingShell = () => (
-  <Stack h="100%" p="md" aria-busy aria-label="Loading dashboard" role="status">
-    <SimpleGrid cols={{ base: 1, sm: 2, lg: 3 }} spacing="md">
-      {[2, 1, 2, 2, 1, 2].map((rows, index) => (
-        <Skeleton
-          key={index}
-          data-homarr-dev-benchmark-board-shell
-          height={rows * 96}
-          radius="var(--mantine-radius-default)"
-        />
-      ))}
-    </SimpleGrid>
-  </Stack>
-);
-
-export const DynamicClientBoard = dynamic(() => import("./_client").then((mod) => mod.ClientBoard), {
-  ssr: false,
-  loading: BoardLoadingShell,
-});

apps/nextjs/src/app/[locale]/boards/(content)/_edit-actions.tsx

@@ -0,0 +1,77 @@
+"use client";
+
+import { Group, Menu } from "@mantine/core";
+import { IconBox, IconChevronDown, IconLayoutGridAdd, IconPlug, IconPlus, IconResize } from "@tabler/icons-react";
+
+import { useSession } from "@homarr/auth/client";
+import { useModalAction } from "@homarr/modals";
+import { AppSelectModal } from "@homarr/modals-collection";
+import { useI18n } from "@homarr/translation/client";
+
+import { useItemActions } from "~/components/board/items/item-actions";
+import { ItemSelectModal } from "~/components/board/items/item-select-modal";
+import { useDynamicSectionActions } from "~/components/board/sections/dynamic/dynamic-actions";
+import { IntegrationSelectModal } from "~/components/integration/integration-select-modal";
+import { HeaderButton } from "~/components/layout/header/button";
+
+export default function BoardEditActions() {
+  return <AddMenu />;
+}
+
+const AddMenu = () => {
+  const { data: session } = useSession();
+  const { openModal: openItemSelectModal } = useModalAction(ItemSelectModal);
+  const { openModal: openAppSelectModal } = useModalAction(AppSelectModal);
+  const { openModal: openIntegrationSelectModal } = useModalAction(IntegrationSelectModal);
+  const { addDynamicSection } = useDynamicSectionActions();
+  const { createItem } = useItemActions();
+  const t = useI18n();
+
+  const handleSelectItem = () => {
+    openItemSelectModal();
+  };
+
+  const handleSelectApp = () => {
+    openAppSelectModal({
+      onSelect: (app) => {
+        createItem({
+          kind: "app",
+          options: { appId: app.id },
+        });
+      },
+      withCreate: session?.user.permissions.includes("app-create") ?? false,
+    });
+  };
+
+  const handleAddIntegration = () => {
+    openIntegrationSelectModal({});
+  };
+
+  return (
+    <Menu position="bottom-end">
+      <Menu.Target>
+        <HeaderButton w="auto" px={4} aria-label={t("board.action.addContent")}>
+          <Group gap={4} wrap="nowrap">
+            <IconPlus stroke={1.5} />
+            <IconChevronDown color="gray" size={16} />
+          </Group>
+        </HeaderButton>
+      </Menu.Target>
+      <Menu.Dropdown style={{ transform: "translate(-3px, 0)" }}>
+        <Menu.Item leftSection={<IconResize size={20} />} onClick={handleSelectItem}>
+          {t("item.action.create")}
+        </Menu.Item>
+        <Menu.Item leftSection={<IconBox size={20} />} onClick={handleSelectApp}>
+          {t("app.action.add")}
+        </Menu.Item>
+        <Menu.Item leftSection={<IconPlug size={20} />} onClick={handleAddIntegration}>
+          {t("integration.action.create")}
+        </Menu.Item>
+        <Menu.Divider />
+        <Menu.Item leftSection={<IconLayoutGridAdd size={20} />} onClick={addDynamicSection}>
+          {t("section.dynamic.action.create")}
+        </Menu.Item>
+      </Menu.Dropdown>
+    </Menu>
+  );
+};

apps/nextjs/src/app/[locale]/boards/(content)/_header-actions.tsx

@@ -1,49 +1,50 @@
 "use client";
 
-import { useCallback, useEffect, useRef } from "react";
+import { startTransition, useCallback, useEffect, useRef, useState } from "react";
+import dynamic from "next/dynamic";
 import { useRouter } from "next/navigation";
-import { OnboardingTour } from "@gfazioli/mantine-onboarding-tour";
-import { Box, Group, Menu, ScrollArea } from "@mantine/core";
+import { Box, Center, Loader, Menu, ScrollArea } from "@mantine/core";
 import { useHotkeys } from "@mantine/hooks";
-import {
-  IconBox,
-  IconBoxAlignTop,
-  IconChevronDown,
-  IconLayoutBoard,
-  IconPencil,
-  IconPencilOff,
-  IconPlug,
-  IconPlus,
-  IconReplace,
-  IconResize,
-  IconSettings,
-} from "@tabler/icons-react";
+import { IconLayoutBoard, IconPencil, IconPencilOff, IconReplace, IconSettings } from "@tabler/icons-react";
 
 import { clientApi } from "@homarr/api/client";
-import { useSession } from "@homarr/auth/client";
 import { useRequiredBoard } from "@homarr/boards/context";
 import { useEditMode } from "@homarr/boards/edit-mode";
 import { revalidatePathActionAsync } from "@homarr/common/client";
 import { env } from "@homarr/common/env";
 import { hotkeys } from "@homarr/definitions";
-import { useConfirmModal, useModalAction } from "@homarr/modals";
-import { AppSelectModal } from "@homarr/modals-collection";
+import { useConfirmModal } from "@homarr/modals";
 import { showErrorNotification, showSuccessNotification } from "@homarr/notifications";
 import { useI18n, useScopedI18n } from "@homarr/translation/client";
 import { Link } from "@homarr/ui";
 
-import { useItemActions } from "~/components/board/items/item-actions";
-import { ItemSelectModal } from "~/components/board/items/item-select-modal";
 import { useBoardPermissions } from "~/components/board/permissions/client";
-import { useCategoryActions } from "~/components/board/sections/category/category-actions";
-import { CategoryEditModal } from "~/components/board/sections/category/category-edit-modal";
-import { useDynamicSectionActions } from "~/components/board/sections/dynamic/dynamic-actions";
-import { IntegrationSelectModal } from "~/components/integration/integration-select-modal";
+import { loadGridEditorAsync, scheduleGridEditorWarmup } from "~/components/board/sections/grid/grid-editor-loader";
 import { HeaderButton } from "~/components/layout/header/button";
+import { TourTarget } from "~/components/layout/header/tour-target";
+import type * as EditActionsModule from "./_edit-actions";
+
+let editActionsModulePromise: Promise<typeof EditActionsModule> | undefined;
+const loadEditActionsAsync = () => {
+  editActionsModulePromise ??= import("./_edit-actions").catch((error: unknown) => {
+    editActionsModulePromise = undefined;
+    throw error;
+  });
+  return editActionsModulePromise;
+};
+const loadBoardEditorAsync = async () =>
+  await Promise.all([
+    loadGridEditorAsync(),
+    loadEditActionsAsync(),
+    import("~/components/board/items/item-menu"),
+    import("~/components/board/sections/container/container-menu"),
+  ]);
+const BoardEditActions = dynamic(loadEditActionsAsync, { ssr: false });
 
 export const BoardContentHeaderActions = ({ demoReadOnly }: { demoReadOnly: boolean }) => {
   const [isEditMode] = useEditMode();
   const board = useRequiredBoard();
+  const t = useI18n();
   const { hasChangeAccess } = useBoardPermissions(board);
 
   if (!hasChangeAccess) {
@@ -52,16 +53,16 @@ export const BoardContentHeaderActions = ({ demoReadOnly }: { demoReadOnly: bool
 
   return (
     <>
-      {isEditMode && <AddMenu />}
+      {isEditMode && <BoardEditActions />}
 
       <EditModeMenu demoReadOnly={demoReadOnly} />
 
       {!demoReadOnly && (
-        <OnboardingTour.Target id="board-settings">
-          <HeaderButton href={`/boards/${board.name}/settings`}>
+        <TourTarget id="board-settings">
+          <HeaderButton href={`/boards/${board.name}/settings`} aria-label={t("board.action.settings")}>
             <IconSettings stroke={1.5} />
           </HeaderButton>
-        </OnboardingTour.Target>
+        </TourTarget>
       )}
 
       <SelectBoardsMenu />
@@ -69,101 +70,13 @@ export const BoardContentHeaderActions = ({ demoReadOnly }: { demoReadOnly: bool
   );
 };
 
-const AddMenu = () => {
-  const board = useRequiredBoard();
-  const { data: session } = useSession();
-  const { openModal: openCategoryEditModal } = useModalAction(CategoryEditModal);
-  const { openModal: openItemSelectModal } = useModalAction(ItemSelectModal);
-  const { openModal: openAppSelectModal } = useModalAction(AppSelectModal);
-  const { openModal: openIntegrationSelectModal } = useModalAction(IntegrationSelectModal);
-  const { addCategoryToEnd } = useCategoryActions();
-  const { addDynamicSection } = useDynamicSectionActions();
-  const { createItem } = useItemActions();
-  const t = useI18n();
-
-  const handleAddCategory = useCallback(
-    () =>
-      openCategoryEditModal(
-        {
-          category: {
-            id: "new",
-            name: "",
-          },
-          onSuccess({ name }) {
-            addCategoryToEnd({ name });
-          },
-          submitLabel: t("section.category.create.submit"),
-        },
-        {
-          title: (t) => t("section.category.create.title"),
-        },
-      ),
-    [addCategoryToEnd, openCategoryEditModal, t],
-  );
-
-  const handleSelectItem = useCallback(() => {
-    openItemSelectModal({ boardId: board.id });
-  }, [board.id, openItemSelectModal]);
-
-  const handleSelectApp = useCallback(() => {
-    openAppSelectModal({
-      onSelect: (app) => {
-        createItem({
-          kind: "app",
-          options: { appId: app.id },
-        });
-      },
-      withCreate: session?.user.permissions.includes("app-create") ?? false,
-    });
-  }, [openAppSelectModal, createItem]);
-
-  const handleAddIntegration = useCallback(() => {
-    openIntegrationSelectModal({});
-  }, [openIntegrationSelectModal]);
-
-  return (
-    <Menu position="bottom-end">
-      <Menu.Target>
-        <HeaderButton w="auto" px={4} aria-label={t("item.action.create")}>
-          <Group gap={4} wrap="nowrap">
-            <IconPlus stroke={1.5} />
-            <IconChevronDown color="gray" size={16} />
-          </Group>
-        </HeaderButton>
-      </Menu.Target>
-      <Menu.Dropdown style={{ transform: "translate(-3px, 0)" }}>
-        <Menu.Item leftSection={<IconResize size={20} />} onClick={handleSelectItem}>
-          {t("item.action.create")}
-        </Menu.Item>
-
-        <Menu.Item leftSection={<IconBox size={20} />} onClick={handleSelectApp}>
-          {t("app.action.add")}
-        </Menu.Item>
-
-        <Menu.Item leftSection={<IconPlug size={20} />} onClick={handleAddIntegration}>
-          {t("integration.action.create")}
-        </Menu.Item>
-
-        <Menu.Divider />
-
-        <Menu.Item leftSection={<IconBoxAlignTop size={20} />} onClick={handleAddCategory}>
-          {t("section.category.action.create")}
-        </Menu.Item>
-
-        <Menu.Item leftSection={<IconResize size={20} />} onClick={addDynamicSection}>
-          {t("section.dynamic.action.create")}
-        </Menu.Item>
-      </Menu.Dropdown>
-    </Menu>
-  );
-};
-
 const EditModeMenu = ({ demoReadOnly }: { demoReadOnly: boolean }) => {
   const [isEditMode, { open, close }] = useEditMode();
+  const [editorLoadState, setEditorLoadState] = useState<"scheduled" | "loading" | "ready" | "error">("scheduled");
+  const [isEnteringEditMode, setIsEnteringEditMode] = useState(false);
   const board = useRequiredBoard();
   const utils = clientApi.useUtils();
   const t = useScopedI18n("board.action.edit");
-  const commonT = useI18n();
   const latestBoardRef = useRef(board);
 
   latestBoardRef.current = board;
@@ -192,46 +105,101 @@ const EditModeMenu = ({ demoReadOnly }: { demoReadOnly: boolean }) => {
     close();
   }, [utils, board.name, close]);
 
-  const toggle = useCallback(() => {
+  const prepareEditorAsync = useCallback(async () => {
+    if (editorLoadState === "ready") return;
+
+    setEditorLoadState("loading");
+    try {
+      await loadBoardEditorAsync();
+      setEditorLoadState("ready");
+    } catch {
+      setEditorLoadState("error");
+      throw new Error("Unable to load the board editor");
+    }
+  }, [editorLoadState]);
+
+  useEffect(() => {
+    return scheduleGridEditorWarmup(async () => {
+      setEditorLoadState("loading");
+      try {
+        await loadBoardEditorAsync();
+        setEditorLoadState("ready");
+      } catch {
+        setEditorLoadState("error");
+      }
+    });
+  }, []);
+
+  const prewarmEditor = useCallback(() => {
+    void prepareEditorAsync().catch(() => {
+      // A click or hotkey retries and reports the error.
+    });
+  }, [prepareEditorAsync]);
+
+  const toggle = useCallback(async () => {
     if (isEditMode) {
       if (demoReadOnly) return discardDemoChanges();
       return saveBoard(latestBoardRef.current);
     }
-    open();
-  }, [isEditMode, demoReadOnly, saveBoard, open, discardDemoChanges]);
+    setIsEnteringEditMode(true);
+    try {
+      await prepareEditorAsync();
+      startTransition(open);
+    } catch {
+      showErrorNotification({
+        title: t("notification.loadError.title"),
+        message: t("notification.loadError.message"),
+      });
+    } finally {
+      setIsEnteringEditMode(false);
+    }
+  }, [demoReadOnly, discardDemoChanges, isEditMode, open, prepareEditorAsync, saveBoard, t]);
 
-  useHotkeys([[hotkeys.toggleBoardEdit, toggle]]);
+  useHotkeys([[hotkeys.toggleBoardEdit, () => void toggle()]]);
   usePreventLeaveWithDirty(isEditMode);
 
   return (
-    <OnboardingTour.Target id="board-edit-mode">
+    <TourTarget id="board-edit-mode">
       <HeaderButton
-        onClick={toggle}
-        loading={isPending}
+        onClick={() => void toggle()}
+        onFocus={prewarmEditor}
+        onPointerEnter={prewarmEditor}
+        loading={isPending || isEnteringEditMode}
         data-testid="board-edit-mode-toggle"
-        aria-label={isEditMode ? commonT("common.action.save") : commonT("common.action.edit")}
+        data-board-editor-preload-state={editorLoadState}
+        aria-busy={isPending || isEnteringEditMode}
+        aria-label={isEditMode ? (demoReadOnly ? t("exit") : t("save")) : t("enter")}
         aria-pressed={isEditMode}
       >
         {isEditMode ? <IconPencilOff stroke={1.5} /> : <IconPencil stroke={1.5} />}
       </HeaderButton>
-    </OnboardingTour.Target>
+    </TourTarget>
   );
 };
 
 const SelectBoardsMenu = () => {
-  const { data: boards = [] } = clientApi.board.getAllBoards.useQuery();
+  const t = useI18n();
+  const [isOpen, setIsOpen] = useState(false);
+  const utils = clientApi.useUtils();
+  const { data: boards = [], isPending } = clientApi.board.getAllBoards.useQuery(undefined, { enabled: isOpen });
+  const preloadBoards = () => void utils.board.getAllBoards.prefetch();
 
   return (
-    <OnboardingTour.Target id="board-switcher">
-      <Box>
-        <Menu position="bottom-end">
+    <TourTarget id="board-switcher">
+      <Box onFocus={preloadBoards} onPointerEnter={preloadBoards}>
+        <Menu position="bottom-end" opened={isOpen} onChange={setIsOpen}>
           <Menu.Target>
-            <HeaderButton w="auto" px={4}>
+            <HeaderButton w="auto" px={4} aria-label={t("board.action.switch")}>
               <IconReplace stroke={1.5} />
             </HeaderButton>
           </Menu.Target>
           <Menu.Dropdown style={{ transform: "translate(-7px, 0)" }}>
             <ScrollArea.Autosize mah={300}>
+              {isPending && (
+                <Center p="xs">
+                  <Loader size="xs" />
+                </Center>
+              )}
               {boards.map((board) => (
                 <Menu.Item
                   key={board.id}
@@ -246,7 +214,7 @@ const SelectBoardsMenu = () => {
           </Menu.Dropdown>
         </Menu>
       </Box>
-    </OnboardingTour.Target>
+    </TourTarget>
   );
 };
 
@@ -259,15 +227,13 @@ const usePreventLeaveWithDirty = (isDirty: boolean) => {
   useEffect(() => {
     if (!isDirty) return;
 
-    const handleClick = (event: Event) => {
-      const target = (event.target as HTMLElement).closest("a");
-
-      if (!target) {
-        console.warn("No anchor element found for click event", event);
-        return;
-      }
+    const handleClick = (event: MouseEvent) => {
+      if (event.button !== 0 || event.metaKey || event.ctrlKey || event.shiftKey || event.altKey) return;
+      const target = event.target instanceof Element ? event.target.closest<HTMLAnchorElement>(anchorSelector) : null;
+      if (!target) return;
 
       event.preventDefault();
+      event.stopPropagation();
 
       openConfirmModal({
         title: t("board.action.edit.confirmLeave.title"),
@@ -293,19 +259,14 @@ const usePreventLeaveWithDirty = (isDirty: boolean) => {
       event.returnValue = true;
     };
 
-    const anchors = document.querySelectorAll(anchorSelector);
-    anchors.forEach((link) => {
-      link.addEventListener("click", handleClick);
-    });
+    document.addEventListener("click", handleClick, true);
     window.addEventListener("popstate", handlePopState);
     window.addEventListener("beforeunload", handleBeforeUnload);
 
     return () => {
-      anchors.forEach((link) => {
-        link.removeEventListener("click", handleClick);
-      });
+      document.removeEventListener("click", handleClick, true);
       window.removeEventListener("popstate", handlePopState);
       window.removeEventListener("beforeunload", handleBeforeUnload);
     };
-  }, [isDirty]);
+  }, [isDirty, openConfirmModal, router, t]);
 };

apps/nextjs/src/app/[locale]/boards/(content)/_integration-provider.spec.ts

@@ -0,0 +1,54 @@
+import { createElement, act } from "react";
+import { createRoot } from "react-dom/client";
+import type { Root } from "react-dom/client";
+import { afterEach, beforeEach, describe, expect, test, vi } from "vitest";
+
+import { BoardIntegrationProvider } from "./_integration-provider";
+
+const mocks = vi.hoisted(() => ({
+  providedIntegrations: undefined as unknown,
+}));
+
+vi.mock("@homarr/auth/client", async () => {
+  const React = await import("react");
+
+  return {
+    IntegrationProvider: ({ children, integrations }: { children: React.ReactNode; integrations: unknown }) => {
+      mocks.providedIntegrations = integrations;
+      return React.createElement(React.Fragment, null, children);
+    },
+  };
+});
+
+describe("board integration provider", () => {
+  let container: HTMLDivElement;
+  let root: Root;
+
+  beforeEach(() => {
+    container = document.createElement("div");
+    document.body.append(container);
+    root = createRoot(container);
+    mocks.providedIntegrations = undefined;
+  });
+
+  afterEach(() => {
+    act(() => root.unmount());
+    container.remove();
+  });
+
+  test("provides the permission-filtered server result without a second client query", () => {
+    const initialIntegrations = [{ id: "initial" }];
+
+    act(() => {
+      root.render(
+        createElement(
+          BoardIntegrationProvider,
+          { initialIntegrations: initialIntegrations as never },
+          createElement("span", null, "board"),
+        ),
+      );
+    });
+
+    expect(mocks.providedIntegrations).toBe(initialIntegrations);
+  });
+});

apps/nextjs/src/app/[locale]/boards/(content)/_integration-provider.tsx

@@ -0,0 +1,14 @@
+"use client";
+
+import type { PropsWithChildren } from "react";
+
+import type { RouterOutputs } from "@homarr/api";
+import { IntegrationProvider } from "@homarr/auth/client";
+
+interface Props {
+  initialIntegrations: RouterOutputs["integration"]["all"];
+}
+
+export const BoardIntegrationProvider = ({ initialIntegrations, children }: PropsWithChildren<Props>) => {
+  return <IntegrationProvider integrations={initialIntegrations}>{children}</IntegrationProvider>;
+};

apps/nextjs/src/app/[locale]/boards/[name]/settings/_layout.module.css

@@ -0,0 +1,47 @@
+.gutterSettings {
+  background: color-mix(in srgb, var(--mantine-color-default) 55%, transparent);
+}
+
+.gutterPreview {
+  display: grid;
+  gap: 6px;
+  width: 100%;
+  min-height: 112px;
+  padding: 8px;
+  overflow: hidden;
+  background: var(--mantine-color-body);
+  border: 1px solid var(--mantine-color-default-border);
+  border-radius: var(--mantine-radius-md);
+  transition: grid-template-columns 180ms ease-out;
+}
+
+.previewCanvas {
+  display: grid;
+  grid-template-columns: repeat(2, minmax(0, 1fr));
+  gap: 6px;
+  min-width: 0;
+}
+
+.previewCanvas > div,
+.previewGutter {
+  background: var(--mantine-color-default);
+  border-radius: var(--mantine-radius-sm);
+}
+
+.previewCanvas > div:nth-child(1) {
+  grid-row: span 2;
+}
+
+.previewCanvas > div:nth-child(4) {
+  grid-column: span 2;
+}
+
+.previewGutter {
+  min-width: 12px;
+}
+
+@media (prefers-reduced-motion: reduce) {
+  .gutterPreview {
+    transition: none;
+  }
+}

apps/nextjs/src/app/[locale]/boards/[name]/settings/_layout.tsx

@@ -1,6 +1,20 @@
 "use client";
 
-import { Button, Fieldset, Grid, Group, Input, NumberInput, Slider, Stack, Text, TextInput } from "@mantine/core";
+import {
+  Box,
+  Button,
+  Fieldset,
+  Grid,
+  Group,
+  Input,
+  NumberInput,
+  Paper,
+  Slider,
+  Stack,
+  Switch,
+  Text,
+  TextInput,
+} from "@mantine/core";
 
 import { createId } from "@homarr/common";
 import type { UseFormReturnType } from "@homarr/form";
@@ -8,6 +22,7 @@ import { useI18n } from "@homarr/translation/client";
 
 import { SectionCard } from "~/components/manage/section-card";
 import type { FormValues } from "./_settings-form";
+import classes from "./_layout.module.css";
 
 interface Props {
   form: UseFormReturnType<FormValues>;
@@ -27,7 +42,17 @@ export const LayoutSettingsContent = ({ form }: Props) => {
             onClick={() => {
               form.setValues((previous) => ({
                 ...previous,
-                layouts: [...(previous.layouts ?? []), { id: createId(), name: "", columnCount: 10, breakpoint: 0 }],
+                layouts: [
+                  ...(previous.layouts ?? []),
+                  {
+                    id: createId(),
+                    name: "",
+                    columnCount: 10,
+                    leftGutterColumnCount: 0,
+                    rightGutterColumnCount: 0,
+                    breakpoint: 0,
+                  },
+                ],
               }));
             }}
           >
@@ -44,7 +69,21 @@ export const LayoutSettingsContent = ({ form }: Props) => {
 
               <Grid.Col span={{ sm: 12, md: 6 }}>
                 <Input.Wrapper label={t("layout.field.columnCount.label")}>
-                  <Slider mt="xs" min={1} max={24} step={1} {...form.getInputProps(`layouts.${index}.columnCount`)} />
+                  <Slider
+                    mt="xs"
+                    min={1}
+                    max={24}
+                    step={1}
+                    value={layout.columnCount}
+                    thumbLabel={t("layout.field.columnCount.label")}
+                    onChange={(columnCount) => {
+                      const left = Math.min(layout.leftGutterColumnCount, Math.max(0, columnCount - 1));
+                      const right = Math.min(layout.rightGutterColumnCount, Math.max(0, columnCount - left - 1));
+                      form.setFieldValue(`layouts.${index}.columnCount`, columnCount);
+                      form.setFieldValue(`layouts.${index}.leftGutterColumnCount`, left);
+                      form.setFieldValue(`layouts.${index}.rightGutterColumnCount`, right);
+                    }}
+                  />
                 </Input.Wrapper>
               </Grid.Col>
 
@@ -55,6 +94,15 @@ export const LayoutSettingsContent = ({ form }: Props) => {
                   description={t("layout.field.breakpoint.description")}
                 />
               </Grid.Col>
+              <Grid.Col span={12}>
+                <GutterSettings
+                  left={layout.leftGutterColumnCount}
+                  right={layout.rightGutterColumnCount}
+                  columnCount={layout.columnCount}
+                  onLeftChange={(value) => form.setFieldValue(`layouts.${index}.leftGutterColumnCount`, value)}
+                  onRightChange={(value) => form.setFieldValue(`layouts.${index}.rightGutterColumnCount`, value)}
+                />
+              </Grid.Col>
             </Grid>
             {form.values.layouts.length >= 2 && (
               <Group justify="end">
@@ -78,3 +126,123 @@ export const LayoutSettingsContent = ({ form }: Props) => {
     </SectionCard>
   );
 };
+
+interface GutterSettingsProps {
+  left: number;
+  right: number;
+  columnCount: number;
+  onLeftChange: (value: number) => void;
+  onRightChange: (value: number) => void;
+}
+
+const gutterMarks = [
+  { value: 1, label: "1" },
+  { value: 2, label: "2" },
+  { value: 3, label: "3" },
+];
+
+const GutterSettings = ({ left, right, columnCount, onLeftChange, onRightChange }: GutterSettingsProps) => {
+  const t = useI18n();
+  const maxGutterWidth = Math.min(3, Math.max(1, columnCount - 1));
+
+  return (
+    <Paper className={classes.gutterSettings} p="md">
+      <Stack gap="md">
+        <Box>
+          <Text fw={600}>{t("layout.field.gutters.label")}</Text>
+          <Text size="sm" c="dimmed">
+            {t("layout.field.gutters.description")}
+          </Text>
+        </Box>
+
+        <GutterPreview left={left} right={right} columnCount={columnCount} />
+
+        <Grid>
+          <Grid.Col span={{ base: 12, md: 6 }}>
+            <GutterControl
+              side="left"
+              value={left}
+              max={Math.min(maxGutterWidth, columnCount - right - 1)}
+              onChange={onLeftChange}
+            />
+          </Grid.Col>
+          <Grid.Col span={{ base: 12, md: 6 }}>
+            <GutterControl
+              side="right"
+              value={right}
+              max={Math.min(maxGutterWidth, columnCount - left - 1)}
+              onChange={onRightChange}
+            />
+          </Grid.Col>
+        </Grid>
+      </Stack>
+    </Paper>
+  );
+};
+
+const GutterControl = ({
+  side,
+  value,
+  max,
+  onChange,
+}: {
+  side: "left" | "right";
+  value: number;
+  max: number;
+  onChange: (value: number) => void;
+}) => {
+  const t = useI18n();
+  const enabled = value > 0;
+
+  return (
+    <Stack gap="sm">
+      <Switch
+        checked={enabled}
+        disabled={max < 1}
+        onChange={(event) => onChange(event.currentTarget.checked ? Math.min(2, max) : 0)}
+        label={t(`layout.field.gutters.${side}.label`)}
+        description={t(`layout.field.gutters.${side}.description`)}
+      />
+      {enabled && (
+        <Input.Wrapper label={t("layout.field.gutters.width.label")}>
+          <Slider
+            mt="xs"
+            min={1}
+            max={max}
+            value={Math.min(value, max)}
+            marks={gutterMarks.filter((mark) => mark.value <= max)}
+            restrictToMarks
+            thumbLabel={t(`layout.field.gutters.${side}.thumbLabel`)}
+            onChange={(nextValue) => onChange(Math.min(nextValue, max))}
+          />
+        </Input.Wrapper>
+      )}
+    </Stack>
+  );
+};
+
+const GutterPreview = ({ left, right, columnCount }: { left: number; right: number; columnCount: number }) => {
+  const t = useI18n();
+  const safeColumnCount = Math.max(1, columnCount);
+  const main = Math.max(1, safeColumnCount - left - right);
+  const tracks = [left > 0 ? `${left}fr` : null, `${main}fr`, right > 0 ? `${right}fr` : null]
+    .filter((track) => track !== null)
+    .join(" ");
+
+  return (
+    <Box
+      className={classes.gutterPreview}
+      aria-label={t("layout.field.gutters.preview.label")}
+      style={{ gridTemplateColumns: tracks }}
+    >
+      {left > 0 && <Box className={classes.previewGutter} data-side="left" />}
+      <Box className={classes.previewCanvas}>
+        <Box />
+        <Box />
+        <Box />
+        <Box />
+      </Box>
+      {right > 0 && <Box className={classes.previewGutter} data-side="right" />}
+    </Box>
+  );
+};

apps/nextjs/src/app/[locale]/boards/_layout-creator.tsx

@@ -1,4 +1,5 @@
 import type { JSX, PropsWithChildren } from "react";
+import { cookies, headers } from "next/headers";
 import { notFound, redirect } from "next/navigation";
 import { AppShellMain } from "@mantine/core";
 import { TRPCError } from "@trpc/server";
@@ -6,6 +7,7 @@ import { TRPCError } from "@trpc/server";
 import { auth } from "@homarr/auth/next";
 import { BoardProvider } from "@homarr/boards/context";
 import { EditModeProvider } from "@homarr/boards/edit-mode";
+import { boardViewportWidthCookieName, getLayoutIdForViewportWidth } from "@homarr/boards/layout-selection";
 import { createLogger } from "@homarr/core/infrastructure/logs";
 import { ModalProvider } from "@homarr/modals";
 
@@ -63,9 +65,15 @@ export const createBoardLayout = <TParams extends Params>({
       throw error;
     });
     const colorScheme = await getCurrentColorSchemeAsync();
+    const initialViewportWidth = await getInitialViewportWidthAsync();
+    const initialLayoutId = getLayoutIdForViewportWidth(initialBoard.layouts, initialViewportWidth);
 
     return (
-      <BoardProvider initialBoard={initialBoard}>
+      <BoardProvider
+        initialBoard={initialBoard}
+        initialLayoutId={initialLayoutId}
+        initialViewportWidth={initialViewportWidth}
+      >
         <BoardReadyProvider>
           <EditModeProvider>
             <BoardMantineProvider defaultColorScheme={colorScheme}>
@@ -91,3 +99,22 @@ export const createBoardLayout = <TParams extends Params>({
 
   return Layout;
 };
+
+const getInitialViewportWidthAsync = async () => {
+  const cookieValue = (await cookies()).get(boardViewportWidthCookieName)?.value;
+  const cookieWidth = Number(cookieValue);
+  if (Number.isInteger(cookieWidth) && cookieWidth >= 200 && cookieWidth <= 10_000) {
+    return cookieWidth;
+  }
+
+  const requestHeaders = await headers();
+  const clientHintWidth = Number(requestHeaders.get("sec-ch-viewport-width"));
+  if (Number.isInteger(clientHintWidth) && clientHintWidth >= 200 && clientHintWidth <= 10_000) {
+    return clientHintWidth;
+  }
+
+  const userAgent = requestHeaders.get("user-agent") ?? "";
+  if (/iPad|Tablet|PlayBook|Silk/i.test(userAgent)) return 1024;
+  if (/Mobi|Android|iPhone|iPod|IEMobile|Opera Mini/i.test(userAgent)) return 390;
+  return 1440;
+};

apps/nextjs/src/app/[locale]/layout.tsx

@@ -32,6 +32,7 @@ import { env } from "~/env";
 
 import { SearchEngineOptimization } from "~/components/layout/search-engine-optimization";
 import { ServiceWorkerRegistration } from "~/components/layout/service-worker-registration";
+import { ViewportHint } from "~/components/layout/viewport-hint";
 import { getCurrentColorSchemeAsync } from "~/theme/color-scheme";
 import { DayJsLoader } from "./_client-providers/dayjs-loader";
 import { JotaiProvider } from "./_client-providers/jotai";
@@ -154,6 +155,7 @@ export default async function Layout(props: {
       </head>
       <body className={[fontSans.className, fontSans.variable].join(" ")} suppressHydrationWarning>
         <Analytics enabled={serverSettings.analytics.enableGeneral} />
+        <ViewportHint />
         <StackedProvider>
           <Notifications pauseResetOnHover="notification" />
           <ServiceWorkerRegistration />