stabilizaiton work - projects rework for maintenanceability and ui livening

src/__Libraries/StellaOps.Provcache/DecisionDigestBuilder.Verdict.cs

@@ -0,0 +1,50 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+
+namespace StellaOps.Provcache;
+
+public sealed partial class DecisionDigestBuilder
+{
+    /// <summary>
+    /// Sets the verdict hash directly.
+    /// </summary>
+    public DecisionDigestBuilder WithVerdictHash(string verdictHash)
+    {
+        _verdictHash = verdictHash ?? throw new ArgumentNullException(nameof(verdictHash));
+        return this;
+    }
+
+    /// <summary>
+    /// Computes verdict hash from sorted dispositions.
+    /// Dispositions are sorted by key for deterministic hashing.
+    /// </summary>
+    /// <param name="dispositions">Dictionary of finding ID to disposition.</param>
+    public DecisionDigestBuilder WithDispositions(IReadOnlyDictionary<string, string> dispositions)
+    {
+        ArgumentNullException.ThrowIfNull(dispositions);
+
+        var sorted = dispositions
+            .OrderBy(kvp => kvp.Key, StringComparer.Ordinal)
+            .ToList();
+
+        if (sorted.Count == 0)
+        {
+            _verdictHash = ComputeHash(Encoding.UTF8.GetBytes("empty-verdict"));
+            return this;
+        }
+
+        var sb = new StringBuilder();
+        foreach (var (key, value) in sorted)
+        {
+            if (sb.Length > 0) sb.Append('|');
+            sb.Append(key);
+            sb.Append('=');
+            sb.Append(value);
+        }
+
+        _verdictHash = ComputeHash(Encoding.UTF8.GetBytes(sb.ToString()));
+        return this;
+    }
+}