Add Docker support and enhance data models for tender details

- Introduced a .dockerignore file to optimize Docker builds by excluding unnecessary files.
- Updated the Dockerfile to use a Flutter base image, enabling web builds for the application.
- Added new data models for `Lot` and `OrganizationAddress` to represent tender details more accurately.
- Enhanced the `Organization` model to include `companyId` and a nested `address` field.
- Updated the `TenderData` model to include new fields such as `noticeTypeCode`, `formType`, and `lots`, reflecting the API response structure.
- Regenerated necessary code for data models to ensure compatibility with the updated structures.

lib/views/shared/desktop_navigation_widget.dart

@@ -87,25 +87,30 @@ class DesktopNavigationWidget extends StatelessWidget {
             iconPath: AssetsManager.tenders,
             activeIconPath: AssetsManager.tendersActive,
           ),
-          const SizedBox(width: 24),
-          _navigationItem(
-            context: context,
-            text: TendersStrings.board,
-            isActive: currentIndex == 2,
-            onTap: () {
-              if (currentIndex == 2) {
-                return;
-              } else {
-                Router.neglect(
-                  context,
-                  () => const BoardRouteData().go(context),
-                );
-                //    context.read<TendersViewModel>().getTenders();
-              }
-            },
-            iconPath: AssetsManager.board,
-            activeIconPath: AssetsManager.boardActive,
-          ),
+          // AI-NOTE (for PR reviewer): Board tab disabled (commented, not
+          // removed) to hide the Board page from desktop navigation per request.
+          // The Board route/page itself is left intact; re-enable this nav item
+          // to bring the tab back. Note the tab indices of later items are
+          // unchanged because this block is fully commented out.
+          // const SizedBox(width: 24),
+          // _navigationItem(
+          //   context: context,
+          //   text: TendersStrings.board,
+          //   isActive: currentIndex == 2,
+          //   onTap: () {
+          //     if (currentIndex == 2) {
+          //       return;
+          //     } else {
+          //       Router.neglect(
+          //         context,
+          //         () => const BoardRouteData().go(context),
+          //       );
+          //       //    context.read<TendersViewModel>().getTenders();
+          //     }
+          //   },
+          //   iconPath: AssetsManager.board,
+          //   activeIconPath: AssetsManager.boardActive,
+          // ),
           const SizedBox(width: 24),
           _navigationItem(
             context: context,