Enforce integer-only values for rent amount field

- Add .int() validation to rentAmount in FormSchema
- Remove decimal formatting (was dividing by 100)
- Change min value from 0 to 1
- Add right text alignment for better numeric display
- Add localization for integer validation error message

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

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

app/ui/LocationEditForm.tsx

@@ -209,11 +209,11 @@ export const LocationEditForm: FC<LocationEditFormProps> = ({ location, yearMont
                                         id="rentAmount"
                                         name="rentAmount"
                                         type="number"
+                                        min="1"
                                         step="0.01"
-                                        min="0"
                                         placeholder={t("rent-amount-placeholder")}
-                                        className="input input-bordered w-full placeholder:text-gray-600"
-                                        defaultValue={location?.rentAmount ? (location.rentAmount / 100).toFixed(2) : ""}
+                                        className="input input-bordered w-full placeholder:text-gray-600 text-right"
+                                        defaultValue={location?.rentAmount ?? ""}
                                     />
                                     <div id="rentAmount-error" aria-live="polite" aria-atomic="true">
                                         {state.errors?.rentAmount &&