Add automated LSTM retraining

tools/install_windows_lstm_retrainer.ps1

@@ -0,0 +1,49 @@
+[CmdletBinding()]
+param(
+    [string]$TaskName = "TradeBot LSTM Retrainer",
+    [int]$EveryHours = 6,
+    [string]$Symbols = "BTCUSDT,ETHUSDT,SOLUSDT,XRPUSDT,LTCUSDT",
+    [int]$Limit = 1000
+)
+
+$ErrorActionPreference = "Stop"
+
+$RepoRoot = (Resolve-Path (Join-Path $PSScriptRoot "..")).Path
+$Runner = Join-Path $RepoRoot "tools\run_lstm_retrain.ps1"
+if (-not (Test-Path $Runner)) {
+    throw "Runner not found: $Runner"
+}
+
+$actionArgs = "-NoProfile -ExecutionPolicy Bypass -File `"$Runner`""
+if ($Symbols) {
+    $actionArgs += " -Symbols `"$Symbols`""
+}
+if ($Limit -gt 0) {
+    $actionArgs += " -Limit $Limit"
+}
+$action = New-ScheduledTaskAction -Execute "powershell.exe" -Argument $actionArgs -WorkingDirectory $RepoRoot
+$trigger = New-ScheduledTaskTrigger `
+    -Once `
+    -At (Get-Date).AddMinutes(5) `
+    -RepetitionInterval (New-TimeSpan -Hours $EveryHours) `
+    -RepetitionDuration (New-TimeSpan -Days 3650)
+$principal = New-ScheduledTaskPrincipal `
+    -UserId ([System.Security.Principal.WindowsIdentity]::GetCurrent().Name) `
+    -LogonType Interactive `
+    -RunLevel Limited
+$settings = New-ScheduledTaskSettingsSet `
+    -StartWhenAvailable `
+    -MultipleInstances IgnoreNew `
+    -AllowStartIfOnBatteries `
+    -DontStopIfGoingOnBatteries
+
+Register-ScheduledTask `
+    -TaskName $TaskName `
+    -Action $action `
+    -Trigger $trigger `
+    -Principal $principal `
+    -Settings $settings `
+    -Description "Retrains TradeBot LSTM forecast parameters every $EveryHours hours." `
+    -Force | Out-Null
+
+Write-Host "Registered scheduled task '$TaskName' every $EveryHours hours."