v4.2.1-beta.1

Added

• Stamp size control — a Size slider in the stamp options row sets the default stamp/emoji size (16–256px, remembered across captures). Stamps keep their aspect ratio when resized from any handle, and resizing an emoji stamp carries that size forward to the next one. (#289)
• Measure: "Limit to selection" — the ruler clamps to the capture area across drag-drawing, auto-measure (hold 1/2), and endpoint handle resizing. On by default; uncheck the new toggle in the measure options row to restore whole-screen measuring. (#212)
• Option = draw-through — with a drawing tool active, hold Option to draw or place right over existing annotations instead of selecting them.

Fixed

• Shortcut names on non-QWERTY layouts — hotkey display now resolves character keys through the active keyboard layout, so Dvorak/Colemak/AZERTY users see the keys they actually press. (#214)
• Video editor Copy includes pending edits — trim, cuts, speed, zoom/censor/text, and mute are exported before copying to the clipboard instead of copying the untouched source file. (#193)
• Multi-monitor: restored selection gets keyboard focus — Cmd+C, F, and Enter act on the display that actually shows the restored selection. (#281)
• Stamp hover preview no longer leaves trails at larger stamp sizes.