Previously, clicking 'Ausgewählte starten' on 'Wartet' jobs during an
active upload just showed a toast. But the jobs might NOT actually be
in the batch (skipped during task building).
Now: ALL selected queued/error/aborted jobs are sent to addJobsToBatch.
The upload-manager has duplicate protection (checks jobAbortControllers)
so jobs already in the batch are skipped. Jobs NOT in the batch get
added and start uploading immediately.
Toast now shows exact counts: "X hinzugefügt, Y waren schon im Batch"
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>