feat: add SpacesGrid component and integrate it into the Dashboard route

apps/web/src/components/spaces-grid.tsx

@@ -0,0 +1,167 @@
+import { MoreHorizontal, Plus, Search } from "lucide-react";
+import { Badge } from "@/components/ui/badge";
+import { Button } from "@/components/ui/button";
+import {
+  Card,
+  CardContent,
+  CardFooter,
+  CardHeader,
+} from "@/components/ui/card";
+import { Input } from "@/components/ui/input";
+
+type Space = {
+  id: string;
+  name: string;
+  lastEdited: string;
+  preview: string;
+  itemCount: number;
+  color: string;
+};
+
+// Mock data for demonstration
+const mockSpaces: Space[] = [
+  {
+    id: "1",
+    name: "Product Strategy",
+    lastEdited: "2 hours ago",
+    preview: "/whiteboard-with-product-strategy-diagrams-and-stic.jpg",
+    itemCount: 12,
+    color: "bg-blue-500",
+  },
+  {
+    id: "2",
+    name: "Research Notes",
+    lastEdited: "1 day ago",
+    preview: "/whiteboard-with-research-mind-map-and-connections.jpg",
+    itemCount: 8,
+    color: "bg-green-500",
+  },
+  {
+    id: "3",
+    name: "Meeting Ideas",
+    lastEdited: "3 days ago",
+    preview: "/whiteboard-with-meeting-notes-and-action-items.jpg",
+    itemCount: 15,
+    color: "bg-purple-500",
+  },
+  {
+    id: "4",
+    name: "Design System",
+    lastEdited: "1 week ago",
+    preview: "/whiteboard-with-ui-components-and-design-patterns.jpg",
+    itemCount: 24,
+    color: "bg-orange-500",
+  },
+  {
+    id: "5",
+    name: "Learning Path",
+    lastEdited: "2 weeks ago",
+    preview: "/whiteboard-with-learning-roadmap-and-progress-trac.jpg",
+    itemCount: 6,
+    color: "bg-pink-500",
+  },
+  {
+    id: "6",
+    name: "Project Planning",
+    lastEdited: "3 weeks ago",
+    preview: "/whiteboard-with-project-timeline-and-milestones.jpg",
+    itemCount: 18,
+    color: "bg-cyan-500",
+  },
+];
+
+export function SpacesGrid() {
+  return (
+    <div className="space-y-6 p-6">
+      {/* Header */}
+      <div className="flex items-center justify-between">
+        <div>
+          <h1 className="font-bold text-3xl text-foreground">Your Spaces</h1>
+          <p className="mt-1 text-muted-foreground">
+            Organize your thoughts and ideas in visual workspaces
+          </p>
+        </div>
+        <Button className="gap-2">
+          <Plus className="h-4 w-4" />
+          New Space
+        </Button>
+      </div>
+
+      {/* Search and Filters */}
+      <div className="flex items-center gap-4">
+        <div className="relative max-w-md flex-1">
+          <Search className="-translate-y-1/2 absolute top-1/2 left-3 h-4 w-4 transform text-muted-foreground" />
+          <Input className="pl-10" placeholder="Search spaces..." />
+        </div>
+        <Badge className="px-3 py-1" variant="secondary">
+          {mockSpaces.length} spaces
+        </Badge>
+      </div>
+
+      {/* Spaces Grid */}
+      <div className="grid grid-cols-1 gap-6 md:grid-cols-2 lg:grid-cols-3">
+        {mockSpaces.map((space) => (
+          <Card
+            className="group cursor-pointer border-border/50 transition-all duration-200 hover:border-border hover:shadow-lg"
+            key={space.id}
+          >
+            <CardHeader className="pb-3">
+              <div className="flex items-center justify-between">
+                <div className="flex items-center gap-2">
+                  <div className={`h-3 w-3 rounded-full ${space.color}`} />
+                  <h3 className="font-semibold text-foreground transition-colors group-hover:text-primary">
+                    {space.name}
+                  </h3>
+                </div>
+                <Button
+                  className="h-8 w-8 p-0 opacity-0 transition-opacity group-hover:opacity-100"
+                  size="sm"
+                  variant="ghost"
+                >
+                  <MoreHorizontal className="h-4 w-4" />
+                </Button>
+              </div>
+            </CardHeader>
+
+            <CardContent className="pb-3">
+              {/* Whiteboard Preview */}
+              <div className="relative overflow-hidden rounded-lg border border-border/30 bg-muted/30">
+                <img
+                  alt={`${space.name} preview`}
+                  className="h-32 w-full object-cover transition-transform duration-200 group-hover:scale-105"
+                  src={space.preview || "/placeholder.svg"}
+                />
+                <div className="absolute inset-0 bg-gradient-to-t from-background/20 to-transparent" />
+              </div>
+            </CardContent>
+
+            <CardFooter className="flex items-center justify-between pt-0 text-muted-foreground text-sm">
+              <span>{space.itemCount} items</span>
+              <span>Edited {space.lastEdited}</span>
+            </CardFooter>
+          </Card>
+        ))}
+      </div>
+
+      {/* Empty State (when no spaces exist) */}
+      {mockSpaces.length === 0 && (
+        <div className="flex flex-col items-center justify-center py-16 text-center">
+          <div className="mb-4 flex h-16 w-16 items-center justify-center rounded-full bg-muted">
+            <Plus className="h-8 w-8 text-muted-foreground" />
+          </div>
+          <h3 className="mb-2 font-semibold text-foreground text-lg">
+            No spaces yet
+          </h3>
+          <p className="mb-4 max-w-sm text-muted-foreground">
+            Create your first space to start organizing your thoughts and ideas
+            visually.
+          </p>
+          <Button>
+            <Plus className="mr-2 h-4 w-4" />
+            Create Your First Space
+          </Button>
+        </div>
+      )}
+    </div>
+  );
+}