chris.gitea
1a0fdfc037
ThumbnailImageCache.request never calls back when the decode returns null, which is the right contract for a file with no thumbnail at all but left the placeholder stuck forever for a file whose generation simply hadn't finished writing to disk yet - confirmed via the [DIAG] logs, no ASYNC delivery line ever appeared for the stuck file. GalleryRowCell now retries the request every 500ms (up to 8 times) until it lands, relying on Caffeine evicting a null-completed entry so each retry is a genuine new decode attempt. Also reverts an unrelated regression from the same investigation: deliverThumbnail used to defer/drop the paint while card.getScene() was null, on the theory the card was mid-reattachment by VirtualFlow. That check proved unreliable even for genuinely visible cards, so it started silently dropping real deliveries - worse than the original bug, since nothing could make a card show content that was never painted into it. The paint is unconditional again.
