fix(web): navigate to /issues when switching workspaces

When switching workspaces while on a detail page (e.g. /issues/[id]),
the store clears old data and the page tries to fetch the old resource
with the new workspace context, causing a 404 error. Navigate to the
issues list before switching to avoid referencing stale resources.

apps/web/app/(dashboard)/_components/app-sidebar.tsx

@@ -132,6 +132,7 @@ export function AppSidebar() {
                         key={ws.id}
                         onClick={() => {
                           if (ws.id !== workspace?.id) {
+                            router.push("/issues");
                             switchWorkspace(ws.id);
                           }
                         }}

apps/web/features/modals/create-workspace.tsx

@@ -1,6 +1,7 @@
 "use client";
 
 import { useState } from "react";
+import { useRouter } from "next/navigation";
 import { toast } from "sonner";
 import { ArrowLeft } from "lucide-react";
 import { Input } from "@/components/ui/input";
@@ -18,6 +19,7 @@ import { useWorkspaceStore } from "@/features/workspace";
 const SLUG_REGEX = /^[a-z0-9]+(?:-[a-z0-9]+)*$/;
 
 export function CreateWorkspaceModal({ onClose }: { onClose: () => void }) {
+  const router = useRouter();
   const [name, setName] = useState("");
   const [slug, setSlug] = useState("");
   const [creating, setCreating] = useState(false);
@@ -50,6 +52,7 @@ export function CreateWorkspaceModal({ onClose }: { onClose: () => void }) {
         slug: slug.trim(),
       });
       onClose();
+      router.push("/issues");
       await switchWorkspace(ws.id);
     } catch {
       toast.error("Failed to create workspace");