feat(audit): GetTraceEventsAsync returns the ScriptTrace chain for Replay

Flow Debugger (design 2026-09-05 §7.1): IAuditLogRepository.GetTraceEventsAsync walks any
entry id to its root and down the Edges/Chain CTE exactly as GetExecutionTreeAsync, then
returns the chain's ScriptTrace rows plus the ApiInbound.InboundRequest row via the canonical
row mapper, ordered (OccurredAtUtc, EventId). Test doubles implement the new member with a
NotSupported stub.

Claude-Session: https://claude.ai/code/session_01GSLkkHKz9JrAtmJjmQK3cP

tests/ZB.MOM.WW.ScadaBridge.AuditLog.Tests/Central/AuditLogIngestActorTests.cs

@@ -382,6 +382,9 @@ public class AuditLogIngestActorTests : TestKit, IClassFixture<MsSqlMigrationFix
     /// </summary>
     private sealed class TokenRecordingRepository : IAuditLogRepository
     {
+        public Task<IReadOnlyList<AuditEvent>> GetTraceEventsAsync(Guid executionId, CancellationToken ct = default)
+            => throw new NotSupportedException("GetTraceEventsAsync is not exercised by this test double.");
+
         public CancellationToken? BatchToken { get; private set; }
 
         public List<CancellationToken> RowTokens { get; } = new();
@@ -438,6 +441,9 @@ public class AuditLogIngestActorTests : TestKit, IClassFixture<MsSqlMigrationFix
     /// </summary>
     private sealed class ThrowingRepository : IAuditLogRepository
     {
+        public Task<IReadOnlyList<AuditEvent>> GetTraceEventsAsync(Guid executionId, CancellationToken ct = default)
+            => throw new NotSupportedException("GetTraceEventsAsync is not exercised by this test double.");
+
         private readonly IAuditLogRepository _inner;
         private readonly Guid _poisonId;