Fix pending task count to exclude completed tasks

The PendingTaskCount subquery was only checking ClaimedByUserID = 0
but not CompletedOn IS NULL, causing completed-but-unclaimed tasks
to show up in the business selection screen count.

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

api/workers/myBusinesses.cfm

@@ -41,7 +41,7 @@
       MIN(e.StatusID) AS StatusID,
       MAX(e.IsActive) AS IsActive,
       b.Name AS Name,
-      (SELECT COUNT(*) FROM Tasks t WHERE t.BusinessID = e.BusinessID AND t.ClaimedByUserID = 0) AS PendingTaskCount
+      (SELECT COUNT(*) FROM Tasks t WHERE t.BusinessID = e.BusinessID AND t.ClaimedByUserID = 0 AND t.CompletedOn IS NULL) AS PendingTaskCount
     FROM Employees e
     INNER JOIN Businesses b ON b.ID = e.BusinessID
     WHERE e.UserID = ? AND e.IsActive = b'1'