feat: Implement initial filtering for agent search from the home screen, enable footer navigation, and add provider stability checks.

lib/features/agents/presentation/providers/search_agents_provider.dart

@@ -80,12 +80,14 @@ class SearchAgentsNotifier extends StateNotifier<SearchAgentsState> {
         _repository.getAgentTypes(),
         _repository.getFilterableFields(),
       ]);
+      if (!mounted) return;
       state = state.copyWith(
         agentTypes: results[0] as List<AgentType>,
         filterFields: results[1] as List<FilterableField>,
       );
       await _fetchAgents(page: 1);
     } catch (e) {
+      if (!mounted) return;
       state = state.copyWith(isLoading: false, error: e.toString());
     }
   }
@@ -99,7 +101,7 @@ class SearchAgentsNotifier extends StateNotifier<SearchAgentsState> {
         limit: 10,
         filters: state.activeFilters.isNotEmpty ? state.activeFilters : null,
       );
-
+      if (!mounted) return;
       state = state.copyWith(
         agents: append ? [...state.agents, ...response.data] : response.data,
         currentPage: response.page,
@@ -108,6 +110,7 @@ class SearchAgentsNotifier extends StateNotifier<SearchAgentsState> {
         isLoadingMore: false,
       );
     } catch (e) {
+      if (!mounted) return;
       state = state.copyWith(
         isLoading: false,
         isLoadingMore: false,