Fix build and code structure improvements. New but essential UI functionality. CI improvements. Documentation improvements. AI module improvements.

src/Findings/StellaOps.Findings.Ledger.Tests/Services/LedgerEventWriteServiceIncidentTests.cs

@@ -23,25 +23,10 @@ public class LedgerEventWriteServiceIncidentTests
             .ReturnsAsync((LedgerEventRecord?)null);
 
         var chainId = Guid.NewGuid();
-        var chainHead = new LedgerEventRecord(
-            "tenant-a",
-            chainId,
-            1,
-            Guid.NewGuid(),
-            LedgerEventConstants.EventFindingCreated,
-            "v1",
-            "finding-1",
-            "artifact-1",
-            null,
-            "actor-1",
-            "operator",
-            DateTimeOffset.UtcNow,
-            DateTimeOffset.UtcNow,
-            new JsonObject(),
-            "hash-prev",
-            LedgerEventConstants.EmptyHash,
-            "leaf-hash",
-            "{}");
+        var chainHead = new LedgerChainHead(
+            SequenceNumber: 1,
+            EventHash: "hash-prev",
+            RecordedAt: DateTimeOffset.UtcNow);
 
         repo.Setup(r => r.GetChainHeadAsync("tenant-a", chainId, It.IsAny<CancellationToken>()))
             .ReturnsAsync(chainHead);