Complete database cleanup and setup automated backups

Phase 1: Historical Trades Cleanup ✅
- Deleted 240 historical trades with NULL profit
- Database now 100% clean: 90 valid trades only
- Backup created before deletion
- Result: 0 NULL profits, 0 unknown sessions

Phase 2: Automated Backup Setup ✅
- Created daily_backup.bat script
- Windows Task Scheduler configured
- Daily backups at 00:00 (midnight)
- 7-day backup rotation
- Next backup: 27.12.2025 00:00:00

Final Database Stats:
- Total Trades: 90 (all valid)
- Win Rate: 67.8% (61 wins / 29 losses)
- Total Profit: $8,305.78
- Profit Factor: 4.19
- Avg Win: $153.58
- Avg Loss: $-36.65

Backups created:
1. backups/trading_bot_before_cleanup_20251226_162438.db
2. backups/trading_bot_before_historical_cleanup_20251226_162934.db
3. backups/trading_bot_daily_20251226.db

All data quality issues resolved!

daily_backup.bat

@@ -0,0 +1,4 @@
+@echo off
+REM Daily Database Backup
+cd /d "C:\Users\Administrator\Documents\Place-Order-Trading-Bot"
+python setup_automated_backup.py --run

setup_daily_backup_task.ps1

@@ -0,0 +1,54 @@
+# Setup Daily Backup Task via PowerShell
+$TaskName = "TradingBotDailyBackup"
+$ScriptPath = "$PSScriptRoot\daily_backup.bat"
+$Time = "00:00"
+
+Write-Host "================================================================================"
+Write-Host "  Setting up Daily Backup Task"
+Write-Host "================================================================================"
+Write-Host ""
+Write-Host "Task Name: $TaskName"
+Write-Host "Script: $ScriptPath"
+Write-Host "Time: $Time (midnight)"
+Write-Host ""
+
+# Check if task exists
+$ExistingTask = Get-ScheduledTask -TaskName $TaskName -ErrorAction SilentlyContinue
+
+if ($ExistingTask) {
+    Write-Host "[INFO] Task already exists, will be replaced..."
+    Unregister-ScheduledTask -TaskName $TaskName -Confirm:$false
+}
+
+# Create Action
+$Action = New-ScheduledTaskAction -Execute $ScriptPath -WorkingDirectory $PSScriptRoot
+
+# Create Trigger (Daily at midnight)
+$Trigger = New-ScheduledTaskTrigger -Daily -At $Time
+
+# Create Settings
+$Settings = New-ScheduledTaskSettingsSet -AllowStartIfOnBatteries -DontStopIfGoingOnBatteries -StartWhenAvailable
+
+# Register Task
+Register-ScheduledTask -TaskName $TaskName -Action $Action -Trigger $Trigger -Settings $Settings -Description "Daily backup of trading_bot.db" -User $env:USERNAME
+
+Write-Host ""
+Write-Host "================================================================================"
+Write-Host "  Task created successfully!"
+Write-Host "================================================================================"
+Write-Host ""
+Write-Host "Verification:"
+
+# Verify
+$Task = Get-ScheduledTask -TaskName $TaskName
+$Task | Select-Object TaskName, State | Format-Table
+
+Write-Host ""
+Write-Host "Next Run Time:"
+$Task | Get-ScheduledTaskInfo | Select-Object NextRunTime | Format-Table
+
+Write-Host ""
+Write-Host "[OK] Daily backup will run at midnight (00:00)"
+Write-Host "[OK] Keeps last 7 days of backups"
+Write-Host "[OK] Location: backups/trading_bot_daily_YYYYMMDD.db"
+Write-Host ""