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Evergreen.Health.Application/Health/Sleep/AnomalyExtension.cs

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+namespace Evergreen.Health.Application.Health.Sleep;
+
+/// <summary>本版没有异常判定算法；未来规则只产生事件，不直接操作音箱或家具。</summary>
+public sealed record SleepAnomaly(string Code, string Description, DateTimeOffset ObservedAt);
+public interface ISleepAnomalyRule
+{
+    string Key { get; }
+    SleepAnomaly? Evaluate(IReadOnlyList<SleepObservation> observations);
+}
+
+/// <summary>每个舒睡会话独立持有；只有语音实际播报后才记录提醒时间。</summary>
+public sealed class AnomalyReminderGate
+{
+    private readonly TimeSpan _interval;
+    private readonly Dictionary<string, DateTimeOffset> _delivered = new(StringComparer.OrdinalIgnoreCase);
+    private readonly object _lock = new();
+    public AnomalyReminderGate(SleepWorkflowOptions options) => _interval = options.SameAnomalyReminderInterval;
+    public bool CanRemind(string code, DateTimeOffset now)
+    {
+        lock (_lock) return !_delivered.TryGetValue(code, out var last) || now - last >= _interval;
+    }
+    public void MarkDelivered(string code, DateTimeOffset now)
+    {
+        lock (_lock) _delivered[code] = now;
+    }
+}