Scrollie: Long Screenshot

- [New]Subtitle Collage: automatically grabs one frame per subtitle line from film or short-drama clips and stitches them into one long image; add or remove frames, reorder them, and split long results into pages - [New]Multi-row & multi-column Stitch: images of different sizes keep their original proportions in rows or columns, with nothing cropped; a slider changes the row count live, and you can drag to swap positions - [Improved]Redact: auto-detects avatars, names, phone numbers, QR codes, faces and more, redacts them in one tap, and tap any one to undo it; tap a line, long-press to pick words, or drag a box, even on long screenshots; new Blur, Pixelate and Block styles, plus Erase to wipe text - [Improved]Delete originals after export: separate switches for long screenshots, collages and Subtitle Collage (new ones are off by default), so no more cleaning up Photos by hand; a Subtitle Collage made from a video deletes the video too - [Fixed]Annotations could not be selected, moved or resized after being added; Undo now reverts the last step, so wrong moves and deletions can be undone - [Fixed]Crash when dragging the watermark spacing - [Fixed]Seam fine-tuning in Stitch did not apply to the export