add option to delete location in all subsequent months

- Added toggle in LocationDeleteForm for deleting locations from future months (disabled by default)
- Modified deleteLocationById action to support batch deletion across subsequent months
- When enabled, deletes all locations with same name in current and future months/years
- Only deletes user's own locations with proper data isolation
- Added translations for toggle text in Croatian and English
- Removed unused imports and variables to fix TypeScript warnings
- Uses efficient MongoDB deleteMany operation for bulk deletions

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

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

app/lib/actions/locationActions.ts

@@ -302,7 +302,7 @@ export const fetchLocationById = async (locationID:string) => {
     return(billLocation);
 };
 
-export const deleteLocationById = withUser(async (user:AuthenticatedUser, locationID:string, yearMonth:YearMonth) => {
+export const deleteLocationById = withUser(async (user:AuthenticatedUser, locationID:string, yearMonth:YearMonth, _prevState:any, formData: FormData) => {
 
     noStore();
 
@@ -310,8 +310,35 @@ export const deleteLocationById = withUser(async (user:AuthenticatedUser, locati
 
     const { id: userId } = user;
 
-    // find a location with the given locationID
-    await dbClient.collection<BillingLocation>("lokacije").deleteOne({ _id: locationID, userId });
+    const deleteInSubsequentMonths = formData.get('deleteInSubsequentMonths') === 'on';
+
+    if (deleteInSubsequentMonths) {
+        // Get the location name first to find all locations with the same name
+        const location = await dbClient.collection<BillingLocation>("lokacije")
+            .findOne({ _id: locationID, userId });
+
+        if (location) {
+            // Delete all locations with the same name in current and subsequent months
+            await dbClient.collection<BillingLocation>("lokacije").deleteMany({
+                userId,
+                name: location.name,
+                $or: [
+                    { "yearMonth.year": { $gt: yearMonth.year } },
+                    { 
+                        "yearMonth.year": yearMonth.year, 
+                        "yearMonth.month": { $gte: yearMonth.month } 
+                    }
+                ]
+            });
+        }
+    } else {
+        // Delete only the specific location (current behavior)
+        await dbClient.collection<BillingLocation>("lokacije").deleteOne({ _id: locationID, userId });
+    }
     
-    await gotoHome(yearMonth)
+    await gotoHome(yearMonth);
+    
+    return {
+        message: null
+    };
 })