Mail Box Plus v1.6.3 — Open All Hotfix (follow-up to 1.6.2)

Quick follow-up release cleaning up an issue that slipped through in 1.6.2.

Bug Fix

• Open All terminating early on plenty of bag space — Some users on 1.6.2 were still seeing Open All stop mid-run with a "only N free bag slots remaining" message even when they had plenty of room. The underlying wait logic was giving up a touch too early on slow realms and misreading the cause as a bag-full. Open All now waits longer for server acknowledgment before deciding, and only flags the whole run as bag-full when your free slots are actually close to your "Free Bag Slots to Keep" setting. If a single mail hiccups, it gets skipped and the run keeps going. Huge thanks to NicoSlothEmoji and pjaywow for the detailed repros — that's exactly the kind of report that makes fixes possible.