feat(ui): full‑width ShadTable across app; fix rent dialog width; correct equipment pagination

- ShadTable: ensure full-width via LayoutBuilder+ConstrainedBox minWidth
- BaseListScreen: default data area padding = 0 for table edge-to-edge
- Vendor/Model/User/Company/Inventory/Zipcode: set columnSpanExtent per column
  and add final filler column to absorb remaining width; pin date/status/actions
  widths; ensure date text is single-line
- Equipment: unify card/border style; define fixed column widths + filler;
  increase checkbox column to 56px to avoid overflow
- Rent list: migrate to ShadTable.list with fixed widths + filler column
- Rent form dialog: prevent infinite width by bounding ShadProgress with
  SizedBox and remove Expanded from option rows; add safe selectedOptionBuilder
- Admin list: fix const with non-const argument in table column extents
- Services/Controller: remove hardcoded perPage=10; use BaseListController
  perPage; trust server meta (total/totalPages) in equipment pagination
- widgets/shad_table: ConstrainedBox(minWidth=viewport) so table stretches

Run: flutter analyze → 0 errors (warnings remain).

lib/screens/equipment/equipment_out_form.dart

@@ -732,7 +732,7 @@ class _EquipmentOutFormScreenState extends State<EquipmentOutFormScreen> {
   // 회사 이름을 표시하는 위젯 (지점 포함)
   Widget _buildCompanyDropdownItem(String item, EquipmentOutFormController controller) {
     final TextStyle defaultStyle = TextStyle(
-      color: Colors.black87,
+      color: ShadcnTheme.foreground,
       fontSize: 14,
       fontWeight: FontWeight.normal,
     );
@@ -758,7 +758,7 @@ class _EquipmentOutFormScreenState extends State<EquipmentOutFormScreen> {
               child: Icon(
                 Icons.subdirectory_arrow_right,
                 size: 16,
-                color: Colors.grey,
+                color: ShadcnTheme.mutedForeground,
               ),
               alignment: PlaceholderAlignment.middle,
             ),
@@ -770,8 +770,8 @@ class _EquipmentOutFormScreenState extends State<EquipmentOutFormScreen> {
             TextSpan(text: ' ', style: defaultStyle),
             TextSpan(
               text: branchName, // 지점명
-              style: const TextStyle(
-                color: Colors.indigo,
+              style: TextStyle(
+                color: ShadcnTheme.primary,
                 fontWeight: FontWeight.w500,
                 fontSize: 14,
               ),
@@ -789,7 +789,7 @@ class _EquipmentOutFormScreenState extends State<EquipmentOutFormScreen> {
         style: defaultStyle, // 기본 스타일 설정
         children: [
           WidgetSpan(
-            child: Icon(Icons.business, size: 16, color: Colors.black54),
+            child: Icon(Icons.business, size: 16, color: ShadcnTheme.mutedForeground),
             alignment: PlaceholderAlignment.middle,
           ),
           TextSpan(text: ' ', style: defaultStyle),