up

src/Signals/StellaOps.Signals/Options/UnknownsDecayOptions.cs

@@ -0,0 +1,19 @@
+namespace StellaOps.Signals.Options;
+
+/// <summary>
+/// Configuration for unknowns decay batch processing.
+/// </summary>
+public sealed class UnknownsDecayOptions
+{
+    public const string SectionName = "Signals:UnknownsDecay";
+
+    /// <summary>
+    /// Time of day (UTC hour) for nightly decay batch. Default: 2 (2 AM UTC).
+    /// </summary>
+    public int NightlyBatchHourUtc { get; set; } = 2;
+
+    /// <summary>
+    /// Maximum subjects per batch run. Default: 10000.
+    /// </summary>
+    public int MaxSubjectsPerBatch { get; set; } = 10_000;
+}

src/Signals/StellaOps.Signals/Options/UnknownsScoringOptions.cs

@@ -66,6 +66,11 @@ public sealed class UnknownsScoringOptions
     /// </summary>
     public int StalenessMaxDays { get; set; } = 14;
 
+    /// <summary>
+    /// Staleness time constant (tau) in days for exponential decay. Default: 14
+    /// </summary>
+    public double StalenessTauDays { get; set; } = 14.0;
+
     // ===== BAND THRESHOLDS =====
 
     /// <summary>
@@ -80,6 +85,11 @@ public sealed class UnknownsScoringOptions
 
     // ===== RESCAN SCHEDULING =====
 
+    /// <summary>
+    /// Minutes until HOT items are rescanned. Default: 15
+    /// </summary>
+    public int HotRescanMinutes { get; set; } = 15;
+
     /// <summary>
     /// Hours until WARM items are rescanned. Default: 24
     /// </summary>