docs: backfill XML documentation across 756 files

Adds <summary>, <param>, <typeparam>, and <inheritdoc/> tags to public
members surfaced by commentchecker — resolves 5,847 of 5,869 issues
(99.6%) across three /fixdocs passes.

src/Server/ZB.MOM.WW.OtOpcUa.Runtime/ScriptedAlarms/EfAlarmActorStateStore.cs

@@ -19,6 +19,9 @@ public sealed class EfAlarmActorStateStore : IAlarmActorStateStore
     private readonly IDbContextFactory<OtOpcUaConfigDbContext> _dbFactory;
     private readonly ILogger<EfAlarmActorStateStore> _logger;
 
+    /// <summary>Initializes a new instance of the EfAlarmActorStateStore.</summary>
+    /// <param name="dbFactory">The factory for creating database contexts.</param>
+    /// <param name="logger">The logger instance.</param>
     public EfAlarmActorStateStore(
         IDbContextFactory<OtOpcUaConfigDbContext> dbFactory,
         ILogger<EfAlarmActorStateStore> logger)
@@ -27,6 +30,10 @@ public sealed class EfAlarmActorStateStore : IAlarmActorStateStore
         _logger = logger;
     }
 
+    /// <summary>Loads the alarm state snapshot from the database.</summary>
+    /// <param name="alarmId">The identifier of the alarm.</param>
+    /// <param name="ct">The cancellation token.</param>
+    /// <returns>The alarm state snapshot, or null if not found.</returns>
     public async Task<AlarmActorStateSnapshot?> LoadAsync(string alarmId, CancellationToken ct)
     {
         using var db = await _dbFactory.CreateDbContextAsync(ct).ConfigureAwait(false);
@@ -43,6 +50,9 @@ public sealed class EfAlarmActorStateStore : IAlarmActorStateStore
             LastAckUser: row.LastAckUser);
     }
 
+    /// <summary>Saves the alarm state snapshot to the database.</summary>
+    /// <param name="snapshot">The alarm state snapshot to save.</param>
+    /// <param name="ct">The cancellation token.</param>
     public async Task SaveAsync(AlarmActorStateSnapshot snapshot, CancellationToken ct)
     {
         using var db = await _dbFactory.CreateDbContextAsync(ct).ConfigureAwait(false);