feat: [공통] UI 컴포넌트 개선 (TabChip, FormField, Select 등)

- TabChip, FormField, MobileCard, Select 컴포넌트 개선
- IntegratedListTemplateV2, UniversalListPage 타입 보강
- LoginPage UI 개선

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

src/components/molecules/FormField.tsx

@@ -76,6 +76,8 @@ export interface FormFieldProps {
   showButtons?: boolean;
   /** 텍스트 입력 최대 길이 */
   maxLength?: number;
+  /** SelectContent에 전달할 className (예: max-h-60) */
+  selectContentClassName?: string;
 }
 
 export function FormField({
@@ -108,6 +110,7 @@ export function FormField({
   suffix,
   showButtons,
   maxLength,
+  selectContentClassName,
 }: FormFieldProps) {
 
   const renderInput = () => {
@@ -122,7 +125,7 @@ export function FormField({
             <SelectTrigger className={`${error ? 'border-red-500' : ''} ${inputClassName}`}>
               <SelectValue placeholder={selectPlaceholder} />
             </SelectTrigger>
-            <SelectContent>
+            <SelectContent className={selectContentClassName}>
               {options.map((option) => (
                 <SelectItem
                   key={option.value}