Merge pull request #3 from orus-dev/mvp

Mvp

src/app/workspace/page.tsx

@@ -14,8 +14,18 @@ import {
 } from "@/lib/workspace";
 
 export default function Workspace() {
-  const { workspace, loadWorkspace, updateEntity, setWorkspace } =
-    useWorkspace();
+  const {
+    workspace,
+    loadWorkspace,
+    updateEntity,
+    setWorkspace,
+    addEntity,
+    addGroup,
+    renameEntity,
+    deleteEntity,
+    removeNode,
+    renameGroup,
+  } = useWorkspace();
 
   const [route, setRoute] = useState<Route>({});
 
@@ -116,7 +126,17 @@ export default function Workspace() {
   }
 
   return (
-    <AppSidebar workspace={workspace} setRoute={setRoute}>
+    <AppSidebar
+      workspace={workspace}
+      setRoute={setRoute}
+      setWorkspace={setWorkspace}
+      addEntity={addEntity}
+      addGroup={addGroup}
+      renameEntity={renameEntity}
+      deleteEntity={deleteEntity}
+      removeNode={removeNode}
+      renameGroup={renameGroup}
+    >
       <SidebarTrigger className="w-full px-4">
         <div className="px-4">
           <header className="w-full border-b pb-3 pt-2 hover:bg-accent/20 flex items-center text-foreground/90 gap-2">

src/components/sidebar/AppSidebar.tsx

@@ -1,5 +1,7 @@
 "use client";
 
+import * as React from "react";
+
 import {
   Sidebar,
   SidebarContent,
@@ -10,17 +12,34 @@ import {
   SidebarProvider,
   useSidebar,
 } from "@/components/ui/sidebar";
+import {
+  Dialog,
+  DialogContent,
+  DialogFooter,
+  DialogHeader,
+  DialogTitle,
+  DialogDescription,
+} from "@/components/ui/dialog";
+import { Input } from "@/components/ui/input";
+import { Button } from "@/components/ui/button";
 
 import EntitySwitch from "./Entity";
 import {
   DropdownMenu,
   DropdownMenuContent,
   DropdownMenuItem,
+  DropdownMenuSeparator,
   DropdownMenuTrigger,
 } from "../ui/dropdown-menu";
 
 import { ChevronDown } from "lucide-react";
 import { Route, SetState, Workspace } from "@/lib/types";
+import {
+  listWorkspaces,
+  saveWorkspaceToLocalStorage,
+  createDefaultWorkspace,
+} from "@/lib/workspace";
+import { openFileDialog } from "@/lib/import";
 
 // Simple ID generator
 const id = (prefix = "t") =>
@@ -30,13 +49,112 @@ type AppSidebarProps = {
   children: React.ReactNode;
   workspace: Workspace;
   setRoute: SetState<Route>;
+  /** optional setter for the current workspace, used for rename */
+  setWorkspace: React.Dispatch<React.SetStateAction<Workspace | undefined>>;
+  addEntity: (
+    type: "todo" | "doc",
+    parentGroupId: string | null,
+    name?: string,
+  ) => string | undefined;
+  addGroup: (name: string | undefined, parentGroupId: string | null) => string;
+  renameEntity: (entityId: string, newName: string) => void;
+  deleteEntity: (entityId: string) => void;
+  removeNode: (id: string) => void;
+  renameGroup: (id: string, name: string) => void;
 };
 
 export default function AppSidebar({
   children,
   workspace,
   setRoute,
+  setWorkspace,
+  addEntity,
+  addGroup,
+  renameEntity,
+  deleteEntity,
+  removeNode,
+  renameGroup,
 }: AppSidebarProps) {
+  // actions are passed from parent `useWorkspace` instance
+
+  const [availableWorkspaces, setAvailableWorkspaces] = React.useState<
+    Workspace[]
+  >([]);
+
+  const [isRenameOpen, setIsRenameOpen] = React.useState(false);
+  const [proposedName, setProposedName] = React.useState(workspace.name);
+  const [isWorkspaceCreateOpen, setIsWorkspaceCreateOpen] =
+    React.useState(false);
+  const [newWorkspaceName, setNewWorkspaceName] = React.useState("");
+  const [isCreateOpen, setIsCreateOpen] = React.useState(false);
+  const [createMode, setCreateMode] = React.useState<"list" | "doc" | "group">(
+    "list",
+  );
+  const [createValue, setCreateValue] = React.useState("");
+
+  React.useEffect(() => {
+    setProposedName(workspace.name);
+  }, [workspace.name]);
+
+  // reload list when component mounts or whenever the current workspace changes
+  React.useEffect(() => {
+    setAvailableWorkspaces(listWorkspaces());
+  }, [workspace]);
+
+  const switchWorkspace = (id: string) => {
+    setRoute({ workspace: id });
+  };
+
+  const importWorkspace = async () => {
+    try {
+      const { content } = await openFileDialog(".json");
+      const parsed = JSON.parse(content);
+      if (parsed && typeof parsed.id === "string") {
+        saveWorkspaceToLocalStorage(parsed);
+        setAvailableWorkspaces(listWorkspaces());
+        switchWorkspace(parsed.id);
+      } else {
+        throw new Error("invalid shape");
+      }
+    } catch (err) {
+      console.error("Failed to import workspace:", err);
+      window.alert("Import failed: invalid file");
+    }
+  };
+
+  const exportWorkspace = () => {
+    try {
+      const text = JSON.stringify(workspace, null, 2);
+      const blob = new Blob([text], { type: "application/json" });
+      const url = URL.createObjectURL(blob);
+      const a = document.createElement("a");
+      a.href = url;
+      a.download = `workspace-${workspace.name}.json`;
+      document.body.appendChild(a);
+      a.click();
+      document.body.removeChild(a);
+      URL.revokeObjectURL(url);
+    } catch (err) {
+      console.error("Export failed", err);
+      window.alert("Failed to download workspace");
+    }
+  };
+
+  const renameWorkspace = (name: string) => {
+    if (!name || name === workspace.name) return;
+
+    const updated: Workspace = {
+      ...workspace,
+      name,
+      updatedAt: Date.now(),
+    };
+    saveWorkspaceToLocalStorage(updated);
+    setAvailableWorkspaces(listWorkspaces());
+    if (setWorkspace) {
+      setWorkspace(updated);
+    }
+  };
+
   return (
     <SidebarProvider>
       <Sidebar>
@@ -46,19 +164,86 @@ export default function AppSidebar({
             <SidebarMenuItem>
               <DropdownMenu>
                 <DropdownMenuTrigger asChild>
-                  <button className="flex w-full items-center justify-between px-2 py-1 text-sm">
+                  <Button className="w-full" variant='ghost'>
                     {workspace.name}
                     <ChevronDown className="ml-auto h-4 w-4 opacity-60" />
-                  </button>
+                  </Button>
                 </DropdownMenuTrigger>
 
                 <DropdownMenuContent
                   align="start"
                   className="w-[--radix-popper-anchor-width]"
                 >
-                  {/* Future: real workspace switching */}
-                  <DropdownMenuItem>Rename Workspace</DropdownMenuItem>
-                  <DropdownMenuItem>Export Workspace</DropdownMenuItem>
+                  {/* list all known workspaces */}
+                  {[
+                    availableWorkspaces.find((w) => w.id === workspace.id),
+                    ...availableWorkspaces.filter((w) => w.id !== workspace.id),
+                  ].map((w) => (
+                    <DropdownMenuItem
+                      key={w?.id}
+                      className={
+                        w?.id === workspace.id ? "font-semibold" : undefined
+                      }
+                      onSelect={() => w && switchWorkspace(w?.id)}
+                    >
+                      {w?.name}
+                      {w?.id === workspace.id ? " (current)" : ""}
+                    </DropdownMenuItem>
+                  ))}
+                  <DropdownMenuSeparator />
+                  <DropdownMenuItem
+                    onSelect={() => {
+                      setCreateMode("list");
+                      setCreateValue("New list");
+                      setIsCreateOpen(true);
+                    }}
+                  >
+                    New list (root)
+                  </DropdownMenuItem>
+                  <DropdownMenuItem
+                    onSelect={() => {
+                      setCreateMode("doc");
+                      setCreateValue("New doc");
+                      setIsCreateOpen(true);
+                    }}
+                  >
+                    New doc (root)
+                  </DropdownMenuItem>
+                  <DropdownMenuItem
+                    onSelect={() => {
+                      setCreateMode("group");
+                      setCreateValue("New group");
+                      setIsCreateOpen(true);
+                    }}
+                  >
+                    New group (root)
+                  </DropdownMenuItem>
+                  <DropdownMenuSeparator />
+                  <DropdownMenuItem onSelect={() => setIsRenameOpen(true)}>
+                    Rename Workspace
+                  </DropdownMenuItem>
+                  <DropdownMenuItem onSelect={importWorkspace}>
+                    Import Workspace
+                  </DropdownMenuItem>
+                  <DropdownMenuItem onSelect={exportWorkspace}>
+                    Export Workspace
+                  </DropdownMenuItem>
+                  <DropdownMenuItem
+                    onSelect={() => {
+                      setNewWorkspaceName("New workspace");
+                      setIsWorkspaceCreateOpen(true);
+                    }}
+                  >
+                    Create workspace
+                  </DropdownMenuItem>
+                  <DropdownMenuItem
+                    onSelect={() => {
+                      localStorage.removeItem(workspace.id);
+                    }}
+                    variant="destructive"
+                  >
+                    Delete workspace
+                  </DropdownMenuItem>
                 </DropdownMenuContent>
               </DropdownMenu>
             </SidebarMenuItem>
@@ -74,6 +259,12 @@ export default function AppSidebar({
                 node={node}
                 workspace={workspace}
                 setRoute={setRoute}
+                addEntity={addEntity}
+                addGroup={addGroup}
+                renameEntity={renameEntity}
+                deleteEntity={deleteEntity}
+                removeNode={removeNode}
+                renameGroup={renameGroup}
               />
             ))}
           </SidebarMenu>
@@ -83,6 +274,127 @@ export default function AppSidebar({
       </Sidebar>
 
       <main className="w-svw flex-1 flex flex-col min-h-0">{children}</main>
+
+      {/* rename dialog */}
+      <Dialog open={isRenameOpen} onOpenChange={setIsRenameOpen}>
+        <DialogContent>
+          <DialogHeader>
+            <DialogTitle>Rename workspace</DialogTitle>
+            <DialogDescription>
+              Provide a new name for the workspace.
+            </DialogDescription>
+          </DialogHeader>
+          <Input
+            value={proposedName}
+            onChange={(e) => setProposedName(e.target.value)}
+            className="w-full"
+          />
+          <DialogFooter>
+            <Button variant="outline" onClick={() => setIsRenameOpen(false)}>
+              Cancel
+            </Button>
+            <Button
+              onClick={() => {
+                renameWorkspace(proposedName);
+                setIsRenameOpen(false);
+              }}
+            >
+              Save
+            </Button>
+          </DialogFooter>
+        </DialogContent>
+      </Dialog>
+      {/* create workspace dialog */}
+      <Dialog
+        open={isWorkspaceCreateOpen}
+        onOpenChange={setIsWorkspaceCreateOpen}
+      >
+        <DialogContent>
+          <DialogHeader>
+            <DialogTitle>Create workspace</DialogTitle>
+            <DialogDescription>
+              Provide a name for the workspace.
+            </DialogDescription>
+          </DialogHeader>
+          <Input
+            value={newWorkspaceName}
+            onChange={(e) => setNewWorkspaceName(e.target.value)}
+            className="w-full"
+          />
+          <DialogFooter>
+            <Button
+              variant="outline"
+              onClick={() => setIsWorkspaceCreateOpen(false)}
+            >
+              Cancel
+            </Button>
+            <Button
+              onClick={() => {
+                const ws = createDefaultWorkspace();
+                ws.name = newWorkspaceName || ws.name;
+                ws.updatedAt = Date.now();
+                ws.createdAt = ws.createdAt || Date.now();
+                saveWorkspaceToLocalStorage(ws);
+                setAvailableWorkspaces(listWorkspaces());
+                switchWorkspace(ws.id);
+                if (setWorkspace) setWorkspace(ws);
+                setIsWorkspaceCreateOpen(false);
+              }}
+            >
+              Create
+            </Button>
+          </DialogFooter>
+        </DialogContent>
+      </Dialog>
+      {/* create dialog */}
+      <Dialog open={isCreateOpen} onOpenChange={setIsCreateOpen}>
+        <DialogContent>
+          <DialogHeader>
+            <DialogTitle>
+              {createMode === "group"
+                ? "Create group"
+                : createMode === "doc"
+                  ? "Create document"
+                  : "Create list"}
+            </DialogTitle>
+            <DialogDescription>
+              {createMode === "group" && "Provide a name for the new group."}
+              {createMode === "doc" && "Provide a name for the new document."}
+              {createMode === "list" && "Provide a name for the new list."}
+            </DialogDescription>
+          </DialogHeader>
+          <Input
+            value={createValue}
+            onChange={(e) => setCreateValue(e.target.value)}
+            className="w-full"
+          />
+          <DialogFooter>
+            <Button variant="outline" onClick={() => setIsCreateOpen(false)}>
+              Cancel
+            </Button>
+            <Button
+              onClick={() => {
+                if (createMode === "group") {
+                  addGroup?.(createValue || "New group", null);
+                } else if (createMode === "doc") {
+                  const id = addEntity?.("doc", null, createValue || "New doc");
+                  if (id) setRoute({ workspace: workspace.id, entity: id });
+                } else {
+                  const id = addEntity?.(
+                    "todo",
+                    null,
+                    createValue || "New list",
+                  );
+                  if (id) setRoute({ workspace: workspace.id, entity: id });
+                }
+                setIsCreateOpen(false);
+              }}
+            >
+              Create
+            </Button>
+          </DialogFooter>
+        </DialogContent>
+      </Dialog>
     </SidebarProvider>
   );
 }

src/components/sidebar/Entity.tsx

@@ -1,6 +1,8 @@
 "use client";
 
-import { CollapsibleTrigger } from "@radix-ui/react-collapsible";
+import { useState } from "react";
+import { ChevronDown } from "lucide-react";
+
 import {
   SidebarGroup,
   SidebarGroupContent,
@@ -9,69 +11,254 @@ import {
   SidebarMenuButton,
   SidebarMenuItem,
 } from "../ui/sidebar";
-import { Collapsible, CollapsibleContent } from "../ui/collapsible";
-import { ChevronDown } from "lucide-react";
+
+import {
+  Collapsible,
+  CollapsibleContent,
+  CollapsibleTrigger,
+} from "../ui/collapsible";
+
+import {
+  ContextMenu,
+  ContextMenuContent,
+  ContextMenuItem,
+  ContextMenuSeparator,
+  ContextMenuTrigger,
+} from "../ui/context-menu";
+
+import {
+  Dialog,
+  DialogContent,
+  DialogHeader,
+  DialogTitle,
+  DialogDescription,
+  DialogFooter,
+} from "../ui/dialog";
+
+import { Input } from "../ui/input";
+import { Button } from "../ui/button";
+
 import { Route, Workspace, LayoutNode } from "@/lib/types";
 
+type DialogMode = "rename" | "add-item" | "add-group";
+
 type Props = {
   node: LayoutNode;
   workspace: Workspace;
   setRoute: (route: Route) => void;
+  addEntity: (
+    type: "todo" | "doc",
+    parentGroupId: string | null,
+    name?: string,
+  ) => string | undefined;
+  addGroup: (name: string, parentGroupId: string | null) => string;
+  renameEntity: (entityId: string, newName: string) => void;
+  deleteEntity: (entityId: string) => void;
+  removeNode: (id: string) => void;
+  renameGroup: (id: string, name: string) => void;
 };
 
-export default function EntitySwitch({ node, workspace, setRoute }: Props) {
-  // ---- GROUP ----
+export default function EntitySwitch(props: Props) {
+  const {
+    node,
+    workspace,
+    setRoute,
+    addEntity,
+    addGroup,
+    renameEntity,
+    deleteEntity,
+    removeNode,
+    renameGroup,
+  } = props;
+
+  const [dialogValue, setDialogValue] = useState("");
+  const [dialogMode, setDialogMode] = useState<DialogMode | undefined>();
+
+  const parentId = node.type === "group" ? node.id : null;
+
+  const openDialog = (mode: DialogMode, initial = "") => {
+    setDialogMode(mode);
+    setDialogValue(
+      initial ||
+        (mode === "add-item"
+          ? "New list"
+          : mode === "add-group"
+            ? "New group"
+            : ""),
+    );
+  };
+
+  const closeDialog = () => setDialogMode(undefined);
+
+  const handleSubmit = () => {
+    const value = dialogValue.trim();
+    if (!value) return;
+
+    switch (dialogMode) {
+      case "rename":
+        if (node.type === "group") renameGroup(node.id, value);
+        else if (node.type === "item") renameEntity(node.entityId, value);
+        break;
+
+      case "add-item":
+        addEntity("todo", parentId, value);
+        break;
+
+      case "add-group":
+        addGroup(value, parentId);
+        break;
+    }
+
+    closeDialog();
+  };
+
+  const confirmDelete = (message: string, action: () => void) => {
+    if (window.confirm(message)) action();
+  };
+
+  const dialogTitle = dialogMode?.startsWith("rename")
+    ? "Rename"
+    : dialogMode === "add-item"
+      ? "Add new list"
+      : "Add new group";
+
+  const dialog = (
+    <Dialog open={!!dialogMode} onOpenChange={(o) => !o && closeDialog()}>
+      <DialogContent>
+        <DialogHeader>
+          <DialogTitle>{dialogTitle}</DialogTitle>
+
+          {(dialogMode === "add-item" || dialogMode === "add-group") && (
+            <DialogDescription>Enter a name below.</DialogDescription>
+          )}
+        </DialogHeader>
+
+        <Input
+          autoFocus
+          value={dialogValue}
+          onChange={(e) => setDialogValue(e.target.value)}
+        />
+
+        <DialogFooter>
+          <Button variant="outline" onClick={closeDialog}>
+            Cancel
+          </Button>
+          <Button onClick={handleSubmit}>Save</Button>
+        </DialogFooter>
+      </DialogContent>
+    </Dialog>
+  );
+
+  /* ================= GROUP ================= */
+
   if (node.type === "group") {
     return (
-      <Collapsible defaultOpen className="group/collapsible">
-        <SidebarGroup>
-          <SidebarGroupLabel asChild>
-            <SidebarMenuButton asChild>
-              <CollapsibleTrigger className="flex w-full items-center">
-                {node.name}
-                <ChevronDown className="ml-auto h-4 w-4 transition-transform group-data-[state=open]/collapsible:rotate-180" />
-              </CollapsibleTrigger>
-            </SidebarMenuButton>
-          </SidebarGroupLabel>
+      <>
+        <Collapsible defaultOpen className="group/collapsible">
+          <SidebarGroup>
+            <SidebarGroupLabel asChild>
+              <ContextMenu>
+                <ContextMenuTrigger asChild>
+                  <CollapsibleTrigger asChild>
+                    <SidebarMenuButton className="w-full">
+                      {node.name}
+                      <ChevronDown className="ml-auto h-4 w-4 transition-transform group-data-[state=open]/collapsible:rotate-180" />
+                    </SidebarMenuButton>
+                  </CollapsibleTrigger>
+                </ContextMenuTrigger>
 
-          <CollapsibleContent>
-            <SidebarGroupContent>
-              <SidebarMenu>
-                {node.children.map((child) => (
-                  <EntitySwitch
-                    key={child.type === "group" ? child.id : child.entityId}
-                    node={child}
-                    workspace={workspace}
-                    setRoute={setRoute}
-                  />
-                ))}
-              </SidebarMenu>
-            </SidebarGroupContent>
-          </CollapsibleContent>
-        </SidebarGroup>
-      </Collapsible>
+                <ContextMenuContent>
+                  <ContextMenuItem onSelect={() => openDialog("add-item")}>
+                    Add list
+                  </ContextMenuItem>
+
+                  <ContextMenuItem onSelect={() => openDialog("add-group")}>
+                    Add group
+                  </ContextMenuItem>
+
+                  <ContextMenuSeparator />
+
+                  <ContextMenuItem
+                    onSelect={() => openDialog("rename", node.name)}
+                  >
+                    Rename
+                  </ContextMenuItem>
+
+                  <ContextMenuItem
+                    variant="destructive"
+                    onSelect={() =>
+                      confirmDelete("Delete this group and its children?", () =>
+                        removeNode(node.id),
+                      )
+                    }
+                  >
+                    Delete
+                  </ContextMenuItem>
+                </ContextMenuContent>
+              </ContextMenu>
+            </SidebarGroupLabel>
+
+            <CollapsibleContent>
+              <SidebarGroupContent>
+                <SidebarMenu>
+                  {node.children.map((child) => (
+                    <EntitySwitch
+                      key={child.type === "group" ? child.id : child.entityId}
+                      {...props}
+                      node={child}
+                    />
+                  ))}
+                </SidebarMenu>
+              </SidebarGroupContent>
+            </CollapsibleContent>
+          </SidebarGroup>
+        </Collapsible>
+        {dialog}
+      </>
     );
   }
 
-  // ---- ITEM ----
-  const workspaceEntity = workspace.entities[node.entityId];
+  /* ================= ITEM ================= */
 
-  if (!workspaceEntity) {
-    return null;
-  }
+  const entity = workspace.entities[node.entityId];
+  if (!entity) return null;
 
   return (
-    <SidebarMenuItem>
-      <SidebarMenuButton
-        onClick={() =>
-          setRoute({
-            workspace: workspace.id,
-            entity: node.entityId,
-          })
-        }
-      >
-        {workspaceEntity.name}
-      </SidebarMenuButton>
-    </SidebarMenuItem>
+    <>
+      <SidebarMenuItem>
+        <ContextMenu>
+          <ContextMenuTrigger asChild>
+            <SidebarMenuButton
+              onClick={() =>
+                setRoute({
+                  workspace: workspace.id,
+                  entity: node.entityId,
+                })
+              }
+            >
+              {entity.name}
+            </SidebarMenuButton>
+          </ContextMenuTrigger>
+
+          <ContextMenuContent>
+            <ContextMenuItem onSelect={() => openDialog("rename", entity.name)}>
+              Rename
+            </ContextMenuItem>
+
+            <ContextMenuItem
+              variant="destructive"
+              onSelect={() =>
+                confirmDelete("Delete this list?", () =>
+                  deleteEntity(node.entityId),
+                )
+              }
+            >
+              Delete
+            </ContextMenuItem>
+          </ContextMenuContent>
+        </ContextMenu>
+      </SidebarMenuItem>
+      {dialog}
+    </>
   );
 }

src/components/view/board/BoardView.tsx

@@ -12,6 +12,7 @@ import {
   ContextMenuItem,
   ContextMenuTrigger,
 } from "@/components/ui/context-menu";
+import { useState, useEffect, useRef, useCallback } from "react";
 
 export default function BoardView({
   tags,
@@ -20,6 +21,18 @@ export default function BoardView({
   createTask,
   statuses,
 }: TaskViewProps) {
+  const [selectedIds, setSelectedIds] = useState<Set<string>>(new Set());
+  const [isDraggingSelection, setIsDraggingSelection] = useState(false);
+  const [selectionBox, setSelectionBox] = useState<{
+    startX: number;
+    startY: number;
+    endX: number;
+    endY: number;
+  } | null>(null);
+  const boardRef = useRef<HTMLDivElement>(null);
+  const taskCardRefs = useRef<Record<string, HTMLDivElement | null>>({});
+  const mouseDownPos = useRef<{ x: number; y: number } | null>(null);
+
   function onDragEnd(result: any) {
     const { draggableId, source, destination } = result;
     if (!destination) return;
@@ -37,10 +50,130 @@ export default function BoardView({
     });
   }
 
-  // Group tasks by status, using statuses from first available todo entity
-  const tasksArray = Object.values(tasks);
+  const deleteSelected = useCallback(() => {
+    if (selectedIds.size === 0) return;
+    const updated = { ...tasks };
+    selectedIds.forEach((id) => delete updated[id]);
+    setTasks(updated);
+    setSelectedIds(new Set());
+  }, [selectedIds, tasks, setTasks]);
 
-  // Sort tasks by creation date within each status
+  // Ctrl+A to select all, Backspace/Delete to delete selected
+  useEffect(() => {
+    function handleKeyDown(e: KeyboardEvent) {
+      if (e.key === "a" && (e.ctrlKey || e.metaKey)) {
+        e.preventDefault();
+        setSelectedIds(new Set(Object.keys(tasks)));
+      }
+      if (e.key === "Backspace" || e.key === "Delete") {
+        // Don't fire if user is typing in an input/textarea
+        const target = e.target as HTMLElement;
+        if (
+          target.tagName === "INPUT" ||
+          target.tagName === "TEXTAREA" ||
+          target.isContentEditable
+        )
+          return;
+        deleteSelected();
+      }
+    }
+    window.addEventListener("keydown", handleKeyDown);
+    return () => window.removeEventListener("keydown", handleKeyDown);
+  }, [tasks, deleteSelected]);
+
+  // Mouse drag selection
+  useEffect(() => {
+    function handleMouseDown(e: MouseEvent) {
+      // Only start selection if clicking on the board background (not a card)
+      const target = e.target as HTMLElement;
+      const isCard = target.closest("[data-task-card]");
+      if (isCard) return;
+      if (e.button !== 0) return;
+
+      mouseDownPos.current = { x: e.clientX, y: e.clientY };
+    }
+
+    function handleMouseMove(e: MouseEvent) {
+      if (!mouseDownPos.current) return;
+      const dx = Math.abs(e.clientX - mouseDownPos.current.x);
+      const dy = Math.abs(e.clientY - mouseDownPos.current.y);
+      if (dx > 4 || dy > 4) {
+        setIsDraggingSelection(true);
+        setSelectionBox({
+          startX: mouseDownPos.current.x,
+          startY: mouseDownPos.current.y,
+          endX: e.clientX,
+          endY: e.clientY,
+        });
+      }
+    }
+
+    function handleMouseUp(e: MouseEvent) {
+      if (isDraggingSelection && selectionBox) {
+        // Find all task cards that intersect with the selection box
+        const minX = Math.min(selectionBox.startX, selectionBox.endX);
+        const maxX = Math.max(selectionBox.startX, selectionBox.endX);
+        const minY = Math.min(selectionBox.startY, selectionBox.endY);
+        const maxY = Math.max(selectionBox.startY, selectionBox.endY);
+
+        const newSelected = new Set<string>();
+        Object.entries(taskCardRefs.current).forEach(([id, el]) => {
+          if (!el) return;
+          const rect = el.getBoundingClientRect();
+          if (
+            rect.left < maxX &&
+            rect.right > minX &&
+            rect.top < maxY &&
+            rect.bottom > minY
+          ) {
+            newSelected.add(id);
+          }
+        });
+
+        if (e.shiftKey) {
+          setSelectedIds((prev) => new Set([...prev, ...newSelected]));
+        } else {
+          setSelectedIds(newSelected);
+        }
+      } else if (!isDraggingSelection) {
+        // Click on empty area deselects
+        const target = e.target as HTMLElement;
+        const isCard = target.closest("[data-task-card]");
+        if (!isCard) {
+          setSelectedIds(new Set());
+        }
+      }
+
+      mouseDownPos.current = null;
+      setIsDraggingSelection(false);
+      setSelectionBox(null);
+    }
+
+    window.addEventListener("mousedown", handleMouseDown);
+    window.addEventListener("mousemove", handleMouseMove);
+    window.addEventListener("mouseup", handleMouseUp);
+    return () => {
+      window.removeEventListener("mousedown", handleMouseDown);
+      window.removeEventListener("mousemove", handleMouseMove);
+      window.removeEventListener("mouseup", handleMouseUp);
+    };
+  }, [isDraggingSelection, selectionBox]);
+
+  function handleTaskClick(e: React.MouseEvent, taskId: string) {
+    if (e.ctrlKey || e.metaKey) {
+      setSelectedIds((prev) => {
+        const next = new Set(prev);
+        if (next.has(taskId)) next.delete(taskId);
+        else next.add(taskId);
+        return next;
+      });
+    } else if (e.shiftKey) {
+      setSelectedIds((prev) => new Set([...prev, taskId]));
+    }
+    // Normal click handled by SheetTrigger (task edit) if not multi-select
+  }
+
+  const tasksArray = Object.values(tasks);
   const tasksByStatus = statuses.map((status) => ({
     status,
     tasks: tasksArray
@@ -48,17 +181,71 @@ export default function BoardView({
       .sort((a, b) => a.createdAt - b.createdAt),
   }));
 
+  const selRect = selectionBox
+    ? {
+        left: Math.min(selectionBox.startX, selectionBox.endX),
+        top: Math.min(selectionBox.startY, selectionBox.endY),
+        width: Math.abs(selectionBox.endX - selectionBox.startX),
+        height: Math.abs(selectionBox.endY - selectionBox.startY),
+      }
+    : null;
+
   return (
-    <div className="w-full h-full flex flex-col gap-6 overflow-hidden flex-1 min-h-0">
+    <div
+      ref={boardRef}
+      className="w-full h-full flex flex-col gap-6 overflow-hidden flex-1 min-h-0 relative"
+    >
+      {/* Selection box overlay */}
+      {isDraggingSelection && selRect && (
+        <div
+          className="fixed pointer-events-none z-50 border border-primary bg-primary/10 rounded"
+          style={{
+            left: selRect.left,
+            top: selRect.top,
+            width: selRect.width,
+            height: selRect.height,
+          }}
+        />
+      )}
+
+      {/* Delete bar when items selected */}
+      {selectedIds.size > 0 && (
+        <div className="flex items-center gap-2 px-3 py-2 bg-destructive/10 border border-destructive/30 rounded-md text-sm text-destructive">
+          <span className="font-medium">
+            {selectedIds.size} task{selectedIds.size !== 1 ? "s" : ""} selected
+          </span>
+          <span className="text-muted-foreground">
+            — press Backspace to delete
+          </span>
+          <Button
+            size="sm"
+            variant="destructive"
+            className="ml-auto h-7"
+            onClick={deleteSelected}
+          >
+            <Trash2 className="h-3 w-3 mr-1" />
+            Delete
+          </Button>
+          <Button
+            size="sm"
+            variant="ghost"
+            className="h-7 text-muted-foreground"
+            onClick={() => setSelectedIds(new Set())}
+          >
+            Clear
+          </Button>
+        </div>
+      )}
+
       <DragDropContext onDragEnd={onDragEnd}>
-        <div className="grid grid-cols-1 md:grid-cols-3 gap-6 items-start flex-1 h-full min-h-0">
+        <div className="flex flex-col md:flex-row w-full gap-6 items-start flex-1 h-full min-h-0">
           {tasksByStatus.map(({ status, tasks: statusTasks }) => (
             <Droppable key={status.id} droppableId={status.id}>
               {(provided) => (
                 <Card
                   ref={provided.innerRef}
                   {...provided.droppableProps}
-                  className="bg-background h-full flex flex-col overflow-hidden min-h-0"
+                  className="bg-background w-full h-full flex flex-col overflow-hidden min-h-0"
                 >
                   <CardHeader>
                     <CardTitle className="flex items-center justify-between">
@@ -85,9 +272,14 @@ export default function BoardView({
                             <ContextMenu>
                               <ContextMenuTrigger asChild>
                                 <div
-                                  ref={provided.innerRef}
+                                  ref={(el) => {
+                                    provided.innerRef(el);
+                                    taskCardRefs.current[task.id] = el;
+                                  }}
                                   {...provided.draggableProps}
                                   {...provided.dragHandleProps}
+                                  data-task-card={task.id}
+                                  onClick={(e) => handleTaskClick(e, task.id)}
                                 >
                                   <BoardTask
                                     setTask={(t) =>
@@ -99,6 +291,17 @@ export default function BoardView({
                                     provided={provided}
                                     task={task}
                                     tags={tags}
+                                    isSelected={selectedIds.has(task.id)}
+                                    onDelete={(id) => {
+                                      const updated = { ...tasks };
+                                      delete updated[id];
+                                      setTasks(updated);
+                                      setSelectedIds((prev) => {
+                                        const next = new Set(prev);
+                                        next.delete(id);
+                                        return next;
+                                      });
+                                    }}
                                   />
                                 </div>
                               </ContextMenuTrigger>
@@ -110,6 +313,11 @@ export default function BoardView({
                                     const updated = { ...tasks };
                                     delete updated[task.id];
                                     setTasks(updated);
+                                    setSelectedIds((prev) => {
+                                      const next = new Set(prev);
+                                      next.delete(task.id);
+                                      return next;
+                                    });
                                   }}
                                 >
                                   <Trash2 className="text-destructive" />

src/components/view/board/Task.tsx

@@ -14,6 +14,7 @@ import TaskEdit from "../edit/TaskEdit";
 import { Button } from "@/components/ui/button";
 import { NotepadText, Trash2 } from "lucide-react";
 import DocDialog from "../edit/DocDialog";
+import { cn } from "@/lib/utils";
 
 export default function BoardTask({
   task,
@@ -21,24 +22,27 @@ export default function BoardTask({
   setTask,
   tags,
   onDelete,
+  isSelected,
 }: {
   task: Task;
   setTask: (t: Task) => void;
   provided: DraggableProvided;
   tags: Record<TagId, Tag>;
   onDelete?: (taskId: string) => void;
+  isSelected?: boolean;
 }) {
   return (
     <TaskEdit task={task} tags={tags} setTask={setTask}>
       <SheetTrigger asChild>
         <Card
-          ref={provided.innerRef}
-          {...provided.draggableProps}
-          {...provided.dragHandleProps}
-          className="bg-background cursor-grab active:cursor-grabbing"
+          className={cn(
+            "bg-background cursor-grab active:cursor-grabbing transition-all duration-150",
+            isSelected &&
+              "ring-2 ring-primary ring-offset-1 bg-primary/5 mt-1"
+          )}
         >
           <CardHeader>
-            <CardTitle className="flex items-center justify-between">
+            <CardTitle className="flex items-center justify-between select-none">
               <span className="text-sm font-semibold">{task.title}</span>
               <div className="flex gap-1 ml-auto">
                 <DocDialog task={task} setTask={setTask} tags={tags}>
@@ -73,7 +77,7 @@ export default function BoardTask({
               </CardDescription>
             )}
           </CardHeader>
-          <CardContent className="flex flex-wrap gap-1.5 overflow-hidden">
+          <CardContent className="flex flex-wrap gap-1.5 overflow-hidden select-none">
             {task.tagIds?.map((tagId) => (
               <Badge
                 key={tagId}

src/hooks/workspace.ts

@@ -1,7 +1,11 @@
-import { Entity, EntityId, Workspace } from "@/lib/types";
+import { Entity, EntityId, LayoutNode, Workspace } from "@/lib/types";
 import {
   loadWorkspaceFromLocalStorage,
   saveWorkspaceToLocalStorage,
+  addLayoutItem,
+  addLayoutGroup,
+  removeLayoutNode,
+  renameLayoutGroup,
 } from "@/lib/workspace";
 import { useEffect, useState } from "react";
 
@@ -9,18 +13,121 @@ export function useWorkspace() {
   const [workspace, setWorkspace] = useState<Workspace>();
 
   const updateEntity = (entityId: EntityId, updater: (e: Entity) => Entity) => {
-    setWorkspace((prev) =>
-      prev
-        ? {
-            ...prev,
-            entities: {
-              ...prev.entities,
-              [entityId]: updater(prev.entities[entityId]),
-            },
-            updatedAt: Date.now(),
-          }
-        : undefined,
-    );
+    setWorkspace((prev) => {
+      if (!prev) return prev;
+      const current = prev.entities[entityId];
+      if (!current) return prev;
+      return {
+        ...prev,
+        entities: {
+          ...prev.entities,
+          [entityId]: updater(current),
+        },
+        updatedAt: Date.now(),
+      };
+    });
+  };
+
+  const renameEntity = (entityId: EntityId, newName: string) => {
+    updateEntity(entityId, (e) => ({ ...e, name: newName }));
+  };
+
+  const deleteEntity = (entityId: EntityId) => {
+    setWorkspace((prev) => {
+      if (!prev) return prev;
+      const { [entityId]: _, ...rest } = prev.entities;
+      // also remove from layout
+      const { layout: newLayout } = removeLayoutNode(prev.layout, entityId);
+      return {
+        ...prev,
+        entities: rest,
+        layout: newLayout,
+        updatedAt: Date.now(),
+      };
+    });
+  };
+
+  const addEntity = (
+    type: "todo" | "doc",
+    parentGroupId: string | null,
+    name?: string,
+  ) => {
+    const now = Date.now();
+    const id = crypto.randomUUID();
+    let entity: Entity;
+    if (type === "todo") {
+      entity = {
+        id,
+        type: "todo",
+        name: name || "New list",
+        config: { statuses: [] },
+        tags: {},
+        tasks: {},
+        createdAt: now,
+        updatedAt: now,
+      } as any;
+    } else {
+      entity = {
+        id,
+        type: "doc",
+        name: name || "New doc",
+        content: { version: "2.28.0", time: now, blocks: [] },
+        createdAt: now,
+        updatedAt: now,
+      } as any;
+    }
+    setWorkspace((prev) => {
+      if (!prev) return prev;
+      const newEntities = { ...prev.entities, [id]: entity };
+      const newLayout = addLayoutItem(prev.layout, parentGroupId, {
+        type: "item",
+        entityId: id,
+      });
+      return {
+        ...prev,
+        entities: newEntities,
+        layout: newLayout,
+        updatedAt: Date.now(),
+      };
+    });
+    return id;
+  };
+
+  const addGroup = (name = "New group", parentGroupId: string | null) => {
+    const id = crypto.randomUUID();
+    const group: LayoutNode = { type: "group", id, name, children: [] };
+    setWorkspace((prev) => {
+      if (!prev) return prev;
+      const newLayout = addLayoutGroup(prev.layout, parentGroupId, group);
+      return { ...prev, layout: newLayout, updatedAt: Date.now() };
+    });
+    return id;
+  };
+
+  const removeNode = (id: string) => {
+    setWorkspace((prev) => {
+      if (!prev) return prev;
+      const { layout: newLayout, removedEntityIds } = removeLayoutNode(
+        prev.layout,
+        id,
+      );
+      const newEntities = { ...prev.entities } as Record<string, Entity>;
+      removedEntityIds.forEach((eid) => delete newEntities[eid]);
+      return {
+        ...prev,
+        entities: newEntities,
+        layout: newLayout,
+        updatedAt: Date.now(),
+      };
+    });
+  };
+
+  const renameGroup = (id: string, newName: string) => {
+    setWorkspace((prev) => {
+      if (!prev) return prev;
+      const newLayout = renameLayoutGroup(prev.layout, id, newName);
+      return { ...prev, layout: newLayout, updatedAt: Date.now() };
+    });
   };
 
   const loadWorkspace = (workspaceId: string | undefined) => {
@@ -37,5 +144,16 @@ export function useWorkspace() {
     if (workspace) saveWorkspaceToLocalStorage(workspace);
   }, [workspace]);
 
-  return { workspace, loadWorkspace, updateEntity, setWorkspace };
+  return {
+    workspace,
+    loadWorkspace,
+    updateEntity,
+    renameEntity,
+    deleteEntity,
+    addEntity,
+    addGroup,
+    removeNode,
+    renameGroup,
+    setWorkspace,
+  };
 }

src/lib/workspace.ts

@@ -1,4 +1,4 @@
-import { Workspace, TodoEntity, DocEntity, Status } from "./types";
+import { Workspace, TodoEntity, DocEntity, Status, LayoutNode } from "./types";
 
 export function createDefaultWorkspace(): Workspace {
   const now = Date.now();
@@ -90,8 +90,182 @@ export function loadWorkspaceFromLocalStorage(id: string): Workspace {
 export function saveWorkspaceToLocalStorage(workspace: Workspace): void {
   try {
     const serialized = JSON.stringify(workspace);
+    // keep using raw id for backwards compatibility
     localStorage.setItem(workspace.id, serialized);
   } catch (err) {
     console.error("Failed to save workspace:", err);
   }
 }
+
+/**
+ * Scan localStorage and return all entries that appear to be workspaces.
+ * We ignore keys starting with "route_" which are used for routing state.
+ */
+export function listWorkspaces(): Workspace[] {
+  const workspaces: Workspace[] = [];
+  for (let i = 0; i < localStorage.length; i++) {
+    const key = localStorage.key(i);
+    if (!key) continue;
+    if (key.startsWith("route_")) continue;
+
+    const raw = localStorage.getItem(key);
+    if (!raw) continue;
+
+    try {
+      const parsed = JSON.parse(raw);
+      if (
+        parsed &&
+        typeof parsed === "object" &&
+        typeof parsed.id === "string" &&
+        typeof parsed.name === "string" &&
+        parsed.entities &&
+        parsed.layout
+      ) {
+        workspaces.push(parsed as Workspace);
+      }
+    } catch {
+      // ignore non-json values
+    }
+  }
+  return workspaces;
+}
+
+// layout helpers -------------------------------------------------------------------
+
+type RemoveResult = { layout: LayoutNode[]; removedEntityIds: string[] };
+
+function collectEntityIds(node: LayoutNode): string[] {
+  if (node.type === "item") return [node.entityId];
+  const ids: string[] = [];
+  for (const child of node.children) {
+    ids.push(...collectEntityIds(child));
+  }
+  return ids;
+}
+
+export function removeLayoutNode(
+  layout: LayoutNode[],
+  id: string,
+): RemoveResult {
+  let removed: string[] = [];
+
+  function recurse(nodes: LayoutNode[]): LayoutNode[] {
+    return nodes
+      .map((node) => {
+        if (node.type === "group") {
+          if (node.id === id) {
+            removed.push(...collectEntityIds(node));
+            return null;
+          }
+          const children = recurse(node.children);
+          if (children.length !== node.children.length) {
+            // some children removed
+          }
+          return { ...node, children } as LayoutNode;
+        } else {
+          if (node.entityId === id) {
+            removed.push(node.entityId);
+            return null;
+          }
+          return node;
+        }
+      })
+      .filter(Boolean) as LayoutNode[];
+  }
+
+  const newLayout = recurse(layout);
+  return { layout: newLayout, removedEntityIds: removed };
+}
+
+export function renameLayoutGroup(
+  layout: LayoutNode[],
+  id: string,
+  newName: string,
+): LayoutNode[] {
+  return layout.map((node) => {
+    if (node.type === "group") {
+      if (node.id === id) {
+        return { ...node, name: newName };
+      }
+      return {
+        ...node,
+        children: renameLayoutGroup(node.children, id, newName),
+      };
+    }
+    return node;
+  });
+}
+
+export function addLayoutGroup(
+  layout: LayoutNode[],
+  parentId: string | null,
+  group: LayoutNode,
+): LayoutNode[] {
+  if (!parentId) {
+    return [...layout, group];
+  }
+  return layout.map((node) => {
+    if (node.type === "group") {
+      if (node.id === parentId) {
+        return { ...node, children: [...node.children, group] };
+      }
+      return {
+        ...node,
+        children: addLayoutGroup(node.children, parentId, group),
+      };
+    }
+    return node;
+  });
+}
+
+export function addLayoutItem(
+  layout: LayoutNode[],
+  parentId: string | null,
+  item: LayoutNode,
+): LayoutNode[] {
+  if (!parentId) {
+    return [...layout, item];
+  }
+  return layout.map((node) => {
+    if (node.type === "group") {
+      if (node.id === parentId) {
+        return { ...node, children: [...node.children, item] };
+      }
+      return {
+        ...node,
+        children: addLayoutItem(node.children, parentId, item),
+      };
+    }
+    return node;
+  });
+}
+
+// entity creation helpers ----------------------------------------------------------
+
+export function createTodoEntity(name = "New list"): TodoEntity {
+  const id = crypto.randomUUID();
+  const now = Date.now();
+  return {
+    id,
+    type: "todo",
+    name,
+    config: { statuses: [] },
+    tags: {},
+    tasks: {},
+    createdAt: now,
+    updatedAt: now,
+  };
+}
+
+export function createDocEntity(name = "New doc"): DocEntity {
+  const id = crypto.randomUUID();
+  const now = Date.now();
+  return {
+    id,
+    type: "doc",
+    name,
+    content: { version: "2.28.0", time: now, blocks: [] },
+    createdAt: now,
+    updatedAt: now,
+  };
+}