first commit

Config/CleanerConfig.cs

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+namespace HanaToolbox.Config;
+
+public sealed class CleanerConfig
+{
+    public bool Enabled { get; set; } = false;
+    public int ScheduleHour { get; set; } = 3;
+    public int ScheduleMinute { get; set; } = 0;
+
+    public string TenantBackupPath { get; set; } = "/hana/backup/tenant";
+    public int TenantRetentionDays { get; set; } = 7;
+
+    /// <summary>One or more log backup directories. Each is cleaned with LogRetentionDays.</summary>
+    public List<string> LogBackupPaths { get; set; } = [];
+    public int LogRetentionDays { get; set; } = 1;
+}