v1.5.3

Fixed

• The editor no longer forgets to ask before discarding a capture — pressing Enter in an editor opened from a capture marked it as output even when nothing was output (Enter set to "Do nothing") or the save failed, so closing the window discarded the capture without asking.
• Failures you couldn't see now show a message — opening an image that can't be read, and a copy to the clipboard that fails, used to do nothing at all.
• Undoing a crop or Add Capture no longer misplaces annotations — both operations shift every annotation to follow the image, but undo restored the image without moving the annotations back, leaving them offset from what they were drawn on.
• Undoing a paste removes only what was pasted — pasted annotations kept the batch-undo group of the ones they were copied from, so one undo could also remove the originals; pasting several annotations now undoes as one step, like duplicating.
• Recording a shortcut in Settings works even for a chord that's already in use — global hotkeys stayed active while recording, so pressing a chord SimpleShot already had (to move it to another action, or to re-record it) started a capture instead of being recorded. They are now paused while recording.
• Two SimpleShot actions can no longer share a hotkey — the second one showed the shortcut but never fired. Assigning a chord that another SimpleShot action already has now moves it, and the other action is cleared. (Conflicts with other apps' shortcuts are not detected.)