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/Infrastructure/DapperModelScheduleRepository.cs

@@ -59,6 +59,16 @@ public sealed class DapperModelScheduleRepository(IDbConnectionFactory connectio
         where schedule_id = @ScheduleId and lease_owner = @LeaseOwner;
         """;
 
+    private const string AdvanceSql = """
+        update evaluation.model_operation_schedule
+        set next_due_at = @NextDueAt,
+            lease_owner = null,
+            lease_until = null,
+            last_error_code = null,
+            updated_at = @AdvancedAt
+        where schedule_id = @ScheduleId and lease_owner = @LeaseOwner;
+        """;
+
     public async Task<IReadOnlyList<DueModelOperation>> AcquireDueAsync(DateTimeOffset now, string leaseOwner, TimeSpan leaseDuration, int limit, CancellationToken cancellationToken)
     {
         await using var connection = await connectionFactory.OpenAsync(cancellationToken);
@@ -73,6 +83,13 @@ public sealed class DapperModelScheduleRepository(IDbConnectionFactory connectio
         if (affected != 1) throw new InvalidOperationException("Schedule lease was lost before dispatch completion.");
     }
 
+    public async Task AdvanceWithoutDispatchAsync(Guid scheduleId, string leaseOwner, DateTimeOffset advancedAt, DateTimeOffset nextDueAt, CancellationToken cancellationToken)
+    {
+        await using var connection = await connectionFactory.OpenAsync(cancellationToken);
+        var affected = await connection.ExecuteAsync(new CommandDefinition(AdvanceSql, new { ScheduleId = scheduleId, LeaseOwner = leaseOwner, AdvancedAt = advancedAt, NextDueAt = nextDueAt }, cancellationToken: cancellationToken));
+        if (affected != 1) throw new InvalidOperationException("Schedule lease was lost before advance completion.");
+    }
+
     public async Task ReleaseAsync(Guid scheduleId, string leaseOwner, string reasonCode, DateTimeOffset releasedAt, CancellationToken cancellationToken)
     {
         await using var connection = await connectionFactory.OpenAsync(cancellationToken);