Filter bills display to show only billedToTenant bills

Updated all components to respect the billedToTenant flag:

- LocationCard: Filter bills display and monthlyExpense calculation
- ViewLocationCard: Filter bills display and monthlyExpense calculation
- HomePage: Update monthlyExpense calculations for month grouping
- printActions: Filter barcode print data to only include tenant bills

All filtering uses (bill.billedToTenant ?? true) for backward
compatibility with existing bills that don't have this property set.

This ensures users only see and calculate expenses for bills that
are the tenant's responsibility.

🤖 Generated with [Claude Code](https://claude.com/claude-code)

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

app/ui/ViewLocationCard.tsx

@@ -15,8 +15,8 @@ export const ViewLocationCard:FC<ViewLocationCardProps> = ({location: { _id, nam
 
     const t = useTranslations("home-page.location-card");
 
-    // sum all the billAmounts
-    const monthlyExpense = bills.reduce((acc, bill) => bill.paid ? acc + (bill.payedAmount ?? 0) : acc, 0);
+    // sum all the billAmounts (only for bills billed to tenant)
+    const monthlyExpense = bills.reduce((acc, bill) => (bill.paid && (bill.billedToTenant ?? true)) ? acc + (bill.payedAmount ?? 0) : acc, 0);
 
     return(
         <div data-key={_id } className="card card-compact card-bordered max-w-[30em] min-w-[350px] bg-base-100 border-1 border-neutral my-1">
@@ -24,7 +24,7 @@ export const ViewLocationCard:FC<ViewLocationCardProps> = ({location: { _id, nam
                 <h2 className="card-title mr-[2em] text-[1.3rem]">{formatYearMonth(yearMonth)} {name}</h2>
                 <div className="card-actions mt-[1em] mb-[1em]">
                     {
-                        bills.map(bill => <ViewBillBadge key={`${_id}-${bill._id}`} locationId={_id} bill={bill} />)
+                        bills.filter(bill => bill.billedToTenant ?? true).map(bill => <ViewBillBadge key={`${_id}-${bill._id}`} locationId={_id} bill={bill} />)
                     }
                 </div>
                 {