HelloDetector fix and Changelog/Known-Issues Updates

src/Agent/AutopilotMonitor.Agent.Core/Monitoring/Collectors/HelloDetector.cs

@@ -376,12 +376,10 @@ namespace AutopilotMonitor.Agent.Core.Monitoring.Collectors
                 if (!TrackedEventIds.Contains(eventId))
                     return;
 
-                var description = record.FormatDescription() ?? $"Event ID {eventId}";
                 ProcessHelloEvent(
                     eventId,
                     record.TimeCreated ?? DateTime.UtcNow,
                     record.ProviderName ?? "",
-                    description,
                     isBackfill: false);
             }
             catch (Exception ex)
@@ -390,7 +388,7 @@ namespace AutopilotMonitor.Agent.Core.Monitoring.Collectors
             }
         }
 
-        private void ProcessHelloEvent(int eventId, DateTime timestamp, string providerName, string description, bool isBackfill)
+        private void ProcessHelloEvent(int eventId, DateTime timestamp, string providerName, bool isBackfill)
         {
             string eventType;
             EventSeverity severity;
@@ -448,11 +446,13 @@ namespace AutopilotMonitor.Agent.Core.Monitoring.Collectors
                     return;
             }
 
+            // We only need the event ID and provider for tracking purposes.
+            // The full description can contain sensitive data (e.g. server responses with key IDs, UPNs, tokens).
             var data = new Dictionary<string, object>
             {
                 { "windowsEventId", eventId },
                 { "providerName", providerName ?? "" },
-                { "description", description ?? "" }
+                { "description", "truncated" }
             };
 
             if (isBackfill)
@@ -851,7 +851,6 @@ namespace AutopilotMonitor.Agent.Core.Monitoring.Collectors
                     DateTime latestTimestamp = DateTime.MinValue;
                     int? latestEventId = null;
                     string latestProvider = string.Empty;
-                    string latestDescription = null;
 
                     for (EventRecord record = reader.ReadEvent(); record != null; record = reader.ReadEvent())
                     {
@@ -868,14 +867,13 @@ namespace AutopilotMonitor.Agent.Core.Monitoring.Collectors
                             latestTimestamp = timestamp;
                             latestEventId = eventId;
                             latestProvider = record.ProviderName ?? "";
-                            latestDescription = record.FormatDescription() ?? $"Event ID {eventId}";
                         }
                     }
 
                     if (latestEventId.HasValue)
                     {
                         _logger.Info($"Backfill found recent Hello terminal event: EventID {latestEventId.Value} at {latestTimestamp:O}");
-                        ProcessHelloEvent(latestEventId.Value, latestTimestamp == DateTime.MinValue ? DateTime.UtcNow : latestTimestamp, latestProvider, latestDescription, isBackfill: true);
+                        ProcessHelloEvent(latestEventId.Value, latestTimestamp == DateTime.MinValue ? DateTime.UtcNow : latestTimestamp, latestProvider, isBackfill: true);
                     }
                     else
                     {

src/Web/autopilot-monitor-web/app/changelog/page.tsx

@@ -34,13 +34,26 @@ export default function ChangelogPage() {
             </p>
           </div>
 
+          {/* Known Issues */}
+          <div className="mb-10 pb-8 border-b border-gray-100">
+            <h2 className="text-sm font-semibold text-gray-900 mb-3 uppercase tracking-wider">Known Issues</h2>
+            <ul className="space-y-2">
+              <li className="flex gap-2 text-sm text-gray-600 leading-relaxed">
+                <span className="mt-0.5 text-yellow-500 flex-shrink-0">⚠</span>
+                <span>
+                  <span className="font-medium text-gray-800">Event Timeline</span> — only tested with Entra-only, user-driven Autopilot (no WhiteGlove, ESP with &ldquo;wait for all apps&rdquo; only, no Device Preparation, no hybrid scenario). There is code to handle some of these scenarios but they are untested. If you&apos;d like to share logs for any of these scenarios, that would be greatly appreciated.
+                </span>
+              </li>
+            </ul>
+          </div>
+
           {/* Entries — newest first */}
           <div className="space-y-10">
 
             <div>
               <div className="flex items-center gap-3 mb-3">
                 <span className="text-xs font-mono font-semibold text-gray-400 uppercase tracking-wider">
-                  2026-02-26
+                  2026-02-26 - 10:15 CET
                 </span>
                 <span className="inline-flex items-center px-2 py-0.5 rounded-full text-xs font-medium bg-blue-100 text-blue-800">
                   Architecture
@@ -51,15 +64,7 @@ export default function ChangelogPage() {
               </h2>
               <p className="text-sm text-gray-600 leading-relaxed">
                 The way live session events reach the dashboard timeline was fundamentally
-                reworked. Previously, SignalR pushed full event payloads directly into the
-                UI — which could cause silent gaps if a message was dropped or arrived
-                out of order. Events are now fetched directly from storage on each signal,
-                making Table Storage the single source of truth. The timeline always reflects
-                what is actually stored, ordering and completeness are guaranteed, and
-                phase grouping is computed at render time rather than at receipt time
-                (eliminating a race condition when session metadata wasn&apos;t yet available).
-                A 30-second catch-up fetch was also added as a safety net for sessions
-                with degraded SignalR connectivity.
+                reworked. This should make the timeline more reliable and accurate.
               </p>
             </div>
 

src/Web/autopilot-monitor-web/app/dashboard/page.tsx

@@ -509,7 +509,7 @@ export default function Home() {
                 href="/changelog"
                 className="underline font-medium hover:text-blue-600 dark:hover:text-blue-200"
               >
-                Private Preview Changelog
+                Private Preview Changelog/Known Issues
               </Link>
               .{" "}
               Feedback or bug report?{" "}