fix(ui): Connect to Mesh routes to /dashboard/mesh, not the 404 /mesh

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

neode-ui/src/components/mesh/MeshDeviceSetupModal.vue

@@ -216,7 +216,8 @@ async function connect() {
       device_kind: form.value.deviceKind,
     })
     mesh.dismissDetectedDevice(path)
-    void router.push('/mesh')
+    // The Mesh view lives under the dashboard shell — a bare /mesh 404s.
+    void router.push('/dashboard/mesh')
   } catch (e) {
     error.value = e instanceof Error ? e.message : 'Failed to configure the mesh radio'
   } finally {