feature: Sepsis Early Warning Engine

VigilCareClinicalAPI/Models/Records/Sepsis/SepsisObservationEvent.cs

@@ -0,0 +1,6 @@
+// Subset of the observation.recorded payload — only the fields the sepsis engine needs.
+public record SepsisObservationEvent(
+    Guid EncounterId,
+    Guid PatientId,
+    string ObservationCode,
+    decimal Value);

VigilCareClinicalAPI/Models/Records/Sepsis/SirsOutcome.cs

@@ -0,0 +1,7 @@
+public enum SirsOutcome
+{
+    NotSirsCode,
+    InsufficientCriteria,
+    AlertCreated,
+    AlertAlreadyOpen
+}

VigilCareClinicalAPI/Models/Records/Sepsis/SirsResult.cs

@@ -0,0 +1,11 @@
+// Discriminated result — allows tests and callers to assert the exact outcome
+// without inspecting PostgreSQL or Redis directly.
+public record SirsResult(SirsOutcome Outcome, int ActiveCount = 0)
+{
+    public static readonly SirsResult NotSirsCode           = new(SirsOutcome.NotSirsCode);
+    public static readonly SirsResult AlertCreated          = new(SirsOutcome.AlertCreated);
+    public static readonly SirsResult AlertAlreadyOpen      = new(SirsOutcome.AlertAlreadyOpen);
+
+    public static SirsResult InsufficientCriteria(int count) =>
+        new(SirsOutcome.InsufficientCriteria, count);
+}