Enhance DataController and BotService with new configuration and bot name checks

- Added IConfiguration dependency to DataController for environment variable access.
- Updated GetPaginatedAgentSummariesCommand to include a flag for filtering profitable agents.
- Implemented HasUserBotWithNameAsync method in IBotService and BotService to check for existing bots by name.
- Modified StartBotCommandHandler and StartCopyTradingCommandHandler to prevent duplicate bot names during strategy creation.

src/Managing.Infrastructure.Database/PostgreSql/AgentSummaryRepository.cs

@@ -170,7 +170,8 @@ public class AgentSummaryRepository : IAgentSummaryRepository
         int pageSize,
         SortableFields sortBy,
         string sortOrder,
-        IEnumerable<string>? agentNames = null)
+        IEnumerable<string>? agentNames = null,
+        bool showOnlyProfitableAgent = false)
     {
         // Start with base query
         var query = _context.AgentSummaries.Include(a => a.User).AsQueryable();
@@ -181,6 +182,12 @@ public class AgentSummaryRepository : IAgentSummaryRepository
             query = query.Where(a => agentNames.Contains(a.AgentName));
         }
 
+        // Apply profitable agent filtering if specified
+        if (showOnlyProfitableAgent)
+        {
+            query = query.Where(a => a.TotalROI > 0);
+        }
+
         // Get total count before applying pagination
         var totalCount = await query.CountAsync();