feat: bound scheduler catch-up dispatch (AEG-V15-034)

Implements LATEST_ONLY, SKIP_MISSED, and ALL_WITH_LIMIT dispatch plans anchored to scheduledFor. Evidence: targeted Release tests 4/4 passed; TRX SHA256 DC28BE4F2FCF511D5859B9FC3A0ADDF8CE3A566262C9848F05B06D825EA944AD. Schedules remain disabled; DEC-083 is not resolved.

src/KArtSell.Modules.ModelOperations/Scheduling/ModelOperationsDispatcherJob.cs

@@ -33,21 +33,32 @@ public sealed class ModelOperationsDispatcherJob(
         {
             try
             {
-                var job = Job.FromExpression<ScheduledModelOperationJob>(handler => handler.ExecuteAsync(
-                    item.ScheduleId,
-                    item.OperationCode,
-                    item.ScopeKey,
-                    item.AutomationMode,
-                    item.IdempotencyKey));
-                var backgroundJobId = jobs.Create(job, new EnqueuedState(item.Queue));
+                var plan = ScheduleOccurrencePlanner.Plan(item.ScheduledFor, item.Cadence, item.CatchUpPolicy, item.MaxCatchUp, now);
+                if (plan.OccurrencesToDispatch.Count == 0)
+                {
+                    await schedules.AdvanceWithoutDispatchAsync(item.ScheduleId, leaseOwner, now, plan.NextDueAt, CancellationToken.None);
+                    continue;
+                }
+
+                var backgroundJobId = string.Empty;
+                foreach (var occurrence in plan.OccurrencesToDispatch)
+                {
+                    var idempotencyKey = $"{item.OperationCode}:{item.ScopeKey}:{item.ScheduleVersion}:{occurrence.UtcDateTime:yyyyMMddHHmmss}Z";
+                    var job = Job.FromExpression<ScheduledModelOperationJob>(handler => handler.ExecuteAsync(
+                        item.ScheduleId,
+                        item.OperationCode,
+                        item.ScopeKey,
+                        item.AutomationMode,
+                        idempotencyKey));
+                    backgroundJobId = jobs.Create(job, new EnqueuedState(item.Queue));
+                }
 
-                var nextDueAt = ScheduleOccurrencePlanner.GetNextDueAt(item.ScheduledFor, item.Cadence, item.CatchUpPolicy, item.MaxCatchUp, now);
                 await schedules.MarkDispatchedAsync(
                     item.ScheduleId,
                     leaseOwner,
                     backgroundJobId,
                     now,
-                    nextDueAt,
+                    plan.NextDueAt,
                     CancellationToken.None);
             }
             catch (Exception exception)