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/inventory/dialogs/equipment_history_detail_dialog.dart

@@ -121,7 +121,7 @@ class _EquipmentHistoryDetailDialogState
                   shape: BoxShape.circle,
                   color: color,
                   border: Border.all(
-                    color: Colors.white,
+                    color: ShadcnTheme.primaryForeground,
                     width: 2,
                   ),
                   boxShadow: [
@@ -134,7 +134,7 @@ class _EquipmentHistoryDetailDialogState
                 ),
                 child: Icon(
                   _getTransactionIcon(history.transactionType),
-                  color: Colors.white,
+                  color: ShadcnTheme.primaryForeground,
                   size: 16,
                 ),
               ),
@@ -163,7 +163,7 @@ class _EquipmentHistoryDetailDialogState
               ),
               boxShadow: [
                 BoxShadow(
-                  color: Colors.black.withValues(alpha: 0.05),
+                  color: ShadcnTheme.foreground.withValues(alpha: 0.05),
                   blurRadius: 4,
                   offset: const Offset(0, 2),
                 ),
@@ -534,4 +534,4 @@ class _EquipmentHistoryDetailDialogState
       },
     );
   }
-}
+}