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/login/widgets/login_view.dart

@@ -145,7 +145,7 @@ class _LoginViewState extends State<LoginView>
                 child: Icon(
                   Icons.directions_boat,
                   size: 48,
-                  color: Colors.white,
+                  color: theme.colorScheme.primaryForeground,
                 ),
               );
             },
@@ -251,12 +251,12 @@ class _LoginViewState extends State<LoginView>
               onPressed: controller.isLoading ? null : _handleLogin,
               size: ShadButtonSize.lg,
               child: controller.isLoading
-                  ? const SizedBox(
+                  ? SizedBox(
                       width: 16,
                       height: 16,
                       child: CircularProgressIndicator(
                         strokeWidth: 2,
-                        valueColor: AlwaysStoppedAnimation<Color>(Colors.white),
+                        valueColor: AlwaysStoppedAnimation<Color>(ShadTheme.of(context).colorScheme.primaryForeground),
                       ),
                     )
                   : const Text('로그인'),
@@ -331,4 +331,4 @@ class _LoginViewState extends State<LoginView>
       ],
     );
   }
-}
+}