style: fix no-empty — add comments to intentionally empty catch blocks

frontend/src/lib/components/today/TodayStats.svelte

@@ -168,7 +168,9 @@
 					const data = await bmRes.json();
 					bookingsMade = (data.bookings || []).length;
 				}
-			} catch {}
+			} catch {
+				// Non-critical — bookings-made fetch is optional for stats
+			}
 
 			const newStats: Stats = {
 				total,

frontend/src/routes/login/+page.svelte

@@ -168,7 +168,9 @@
 						if (payload.role === 'admin') {
 							redirectTo = '/today';
 						}
-					} catch {}
+					} catch {
+						// Token decode failure is non-fatal; default redirectTo = '/' is used
+					}
 					toast.success('Successfully logged in!', { id: loadingToast });
 					window.location.href = redirectTo;
 				} else if (response.status === 409) {