Remove LoadOperationsFrom config setting and implement automatic calculation

The LoadOperationsFrom setting has been removed from configuration files
and is now calculated automatically. The system uses the maximum of either
the account open date or 30 days ago as the starting point for loading
operations, preventing the need for manual updates that could cause errors.

Changes:
- Made LoadOperationsFrom nullable in TradingSettings
- Removed LoadOperationsFrom from both appsettings files
- Implemented automatic calculation logic in TradingService constructor
- Updated README.md to remove documentation for the removed setting
- Added informative logging for both configured and calculated values

🤖 Generated with [Claude Code](https://claude.ai/code)

Co-Authored-By: Claude <noreply@anthropic.com>

Author: konard

csharp/TraderBot/README.md

@@ -78,7 +78,6 @@ Configuration is located in `appsettings.json` file.
 | `TradingSettings`/`MinimumMarketOrderSizeToSell` | Minimum size of the market order to sell. The price will be not acceptable unless there is that much lots on the market at this price. |
 | `TradingSettings`/`EarlySellOwnedLotsDelta` | A constant component of the minimum number of lots that the market order placed at the buy price should have in order to trigger the immediate sell order. Complete formula: (`TradingSettings`/`EarlySellOwnedLotsDelta` + `TradingSettings`/`EarlySellOwnedLotsMultiplier` * `Lots requested to sell`). |
 | `TradingSettings`/`EarlySellOwnedLotsMultiplier` | A multiplier of lots requested to sell. A component of the minimum number of lots that the market order placed at the buy price should have in order to trigger the immediate sell order. Complete formula: (`TradingSettings`/`EarlySellOwnedLotsDelta` + `TradingSettings`/`EarlySellOwnedLotsMultiplier` * `Lots requested to sell`). |
-| `TradingSettings`/`LoadOperationsFrom` | Minimum data and time to load operations from. |
 
 ## Current default trading time-frame
 

csharp/TraderBot/TradingService.cs

@@ -62,8 +62,6 @@ public TradingService(ILogger<TradingService> logger, InvestApiClient investApi,
         Logger.LogInformation($"MaximumTimeToBuy: {MaximumTimeToBuy}");
         Logger.LogInformation($"EarlySellOwnedLotsDelta: {settings.EarlySellOwnedLotsDelta}");
         Logger.LogInformation($"EarlySellOwnedLotsMultiplier: {settings.EarlySellOwnedLotsMultiplier}");
-        Logger.LogInformation($"LoadOperationsFrom: {settings.LoadOperationsFrom}");
-
         var currentTime = DateTime.UtcNow.TimeOfDay;
         Logger.LogInformation($"Current time: {currentTime}");
 
@@ -111,7 +109,23 @@ public TradingService(ILogger<TradingService> logger, InvestApiClient investApi,
         ActiveSellOrders = new ConcurrentDictionary<string, OrderState>();
         LotsSets = new ConcurrentDictionary<decimal, long>();
         ActiveSellOrderSourcePrice = new ConcurrentDictionary<string, decimal>();
-        LastOperationsCheckpoint = settings.LoadOperationsFrom;
+        
+        // Calculate LoadOperationsFrom automatically if not provided
+        DateTime calculatedLoadOperationsFrom;
+        if (settings.LoadOperationsFrom.HasValue)
+        {
+            calculatedLoadOperationsFrom = settings.LoadOperationsFrom.Value;
+            Logger.LogInformation($"LoadOperationsFrom (from config): {calculatedLoadOperationsFrom}");
+        }
+        else
+        {
+            // Use account open date or 30 days ago, whichever is more recent
+            DateTime accountOpenDate = DateTime.SpecifyKind(CurrentAccount.OpenedDate.ToDateTime(), DateTimeKind.Utc);
+            DateTime thirtyDaysAgo = DateTime.UtcNow.AddDays(-30);
+            calculatedLoadOperationsFrom = new[] { accountOpenDate, thirtyDaysAgo }.Max();
+            Logger.LogInformation($"LoadOperationsFrom (calculated automatically): {calculatedLoadOperationsFrom}");
+        }
+        LastOperationsCheckpoint = calculatedLoadOperationsFrom;
     }
 
     protected async Task ReceiveTrades(CancellationToken cancellationToken)

csharp/TraderBot/TradingSettings.cs

@@ -16,5 +16,5 @@ public class TradingSettings
     public string? MaximumTimeToBuy { get; set; }
     public long EarlySellOwnedLotsDelta { get; set; }
     public decimal EarlySellOwnedLotsMultiplier { get; set; }
-    public DateTime LoadOperationsFrom { get; set; }
+    public DateTime? LoadOperationsFrom { get; set; }
 }

csharp/TraderBot/appsettings.TMON.json

@@ -23,7 +23,6 @@
     "MinimumTimeToBuy": "00:00:01",
     "MaximumTimeToBuy": "23:59:59",
     "EarlySellOwnedLotsDelta": 300000,
-    "EarlySellOwnedLotsMultiplier": 0,
-    "LoadOperationsFrom": "2025-03-01T00:00:01.3389860Z"
+    "EarlySellOwnedLotsMultiplier": 0
   }
 }

csharp/TraderBot/appsettings.TRUR.json

@@ -23,7 +23,6 @@
     "MinimumTimeToBuy": "09:00:00",
     "MaximumTimeToBuy": "14:45:00",
     "EarlySellOwnedLotsDelta": 300000,
-    "EarlySellOwnedLotsMultiplier": 0,
-    "LoadOperationsFrom": "2025-03-01T00:00:01.3389860Z"
+    "EarlySellOwnedLotsMultiplier": 0
   }
 }