Rename 'iban' to 'ownerIBAN' in UserSettings

Changes:
- Updated UserSettings interface: iban -> ownerIBAN
- Updated userSettingsActions.ts:
  - Changed State type to use ownerIBAN
  - Updated FormSchema validation to reference ownerIBAN
  - Updated validation refinements to check ownerIBAN
  - Updated form data parsing to read ownerIBAN
  - Renamed normalizedIban to normalizedOwnerIBAN
  - Updated database write operations to use ownerIBAN
- Updated UserSettingsForm.tsx:
  - Changed state tracking to use ownerIBAN
  - Updated validation check to reference ownerIBAN (cleanedOwnerIBAN)
  - Updated input field: id, name, and event handlers
- Updated ViewLocationCard.tsx to use ownerIBAN instead of iban
- Updated English translations:
  - iban-label -> owner-iban-label
  - iban-placeholder -> owner-iban-placeholder
  - iban-required -> owner-iban-required
  - iban-invalid -> owner-iban-invalid
- Updated Croatian translations with corresponding ownerIBAN keys

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

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

app/ui/UserSettingsForm.tsx

@@ -30,7 +30,7 @@ const FormFields: FC<FormFieldsProps> = ({ userSettings, errors, message }) => {
         ownerName: userSettings?.ownerName ?? "",
         ownerStreet: userSettings?.ownerStreet ?? "",
         ownerTown: userSettings?.ownerTown ?? "",
-        iban: formatIban(userSettings?.iban) ?? "",
+        ownerIBAN: formatIban(userSettings?.ownerIBAN) ?? "",
         currency: userSettings?.currency ?? "EUR",
     });
 
@@ -39,8 +39,8 @@ const FormFields: FC<FormFieldsProps> = ({ userSettings, errors, message }) => {
     };
 
     // Check if any required field is missing (clean IBAN of spaces for validation)
-    const cleanedIban = formValues.iban.replace(/\s/g, '');
-    const hasMissingData = !formValues.ownerName || !formValues.ownerStreet || !formValues.ownerTown || !cleanedIban || !formValues.currency;
+    const cleanedOwnerIBAN = formValues.ownerIBAN.replace(/\s/g, '');
+    const hasMissingData = !formValues.ownerName || !formValues.ownerStreet || !formValues.ownerTown || !cleanedOwnerIBAN || !formValues.currency;
 
     // Track whether to generate 2D code for tenant (use persisted value from database)
     const [show2dCodeInMonthlyStatement, setShow2dCodeInMonthlyStatement] = useState(
@@ -146,21 +146,21 @@ const FormFields: FC<FormFieldsProps> = ({ userSettings, errors, message }) => {
 
                     <div className="form-control w-full">
                         <label className="label">
-                            <span className="label-text">{t("iban-label")}</span>
+                            <span className="label-text">{t("owner-iban-label")}</span>
                         </label>
                         <input
-                            id="iban"
-                            name="iban"
+                            id="ownerIBAN"
+                            name="ownerIBAN"
                             type="text"
-                            placeholder={t("iban-placeholder")}
+                            placeholder={t("owner-iban-placeholder")}
                             className="input input-bordered w-full placeholder:text-gray-600"
-                            defaultValue={formatIban(userSettings?.iban)}
-                            onChange={(e) => handleInputChange("iban", e.target.value)}
+                            defaultValue={formatIban(userSettings?.ownerIBAN)}
+                            onChange={(e) => handleInputChange("ownerIBAN", e.target.value)}
                             disabled={pending}
                         />
-                        <div id="iban-error" aria-live="polite" aria-atomic="true">
-                            {errors?.iban &&
-                                errors.iban.map((error: string) => (
+                        <div id="ownerIBAN-error" aria-live="polite" aria-atomic="true">
+                            {errors?.ownerIBAN &&
+                                errors.ownerIBAN.map((error: string) => (
                                     <p className="mt-2 text-sm text-red-500" key={error}>
                                         {error}
                                     </p>

app/ui/ViewLocationCard.tsx

@@ -31,7 +31,7 @@ export const ViewLocationCard:FC<ViewLocationCardProps> = ({location, userSettin
         Primatelj: userSettings?.ownerName ?? "",
         AdresaPrimatelja: userSettings?.ownerStreet ?? "",
         SjedistePrimatelja: userSettings?.ownerTown ?? "",
-        IBAN: userSettings?.iban ?? "",
+        IBAN: userSettings?.ownerIBAN ?? "",
         ModelPlacanja: "HR00",
         PozivNaBroj: `${yearMonth.year}-${yearMonth.month.toString().padStart(2,"0")}`,
         SifraNamjene: "",