v3.0.0: DungeonTools redesign

Changed

• Redesigned in the DungeonTools style: bone paper and ink, Oswald and Crimson Pro, ruled numbered panels, light and dark mode (Auto/Light/Dark)
• Preview and Download stay in view on desktop; on phones the Download button sticks to the bottom
• Portraits can be dropped or chosen straight on the preview
• Exports are named after the portrait (goblin-token.png)
• Removed Tailwind and daisyUI; the CSS is plain and there is no build step
• New border art for all 10 borders, redrawn from the originals with a solid, fully opaque band (the old art was 15–35% semi-transparent, so the page showed through the metal); WebP, 0.9 MB in total

Added

• Paste a portrait with Ctrl+V / Cmd+V
• Export size: 256, 512 or 1024 px; larger sizes redraw the portrait from its source pixels
• Pinch to zoom on touch screens
• Custom borders get their cut radius detected from the image instead of a fixed 180
• Settings are remembered between visits (border, cut radius, adjustments, rotation, size, ring)
• Free rotation slider (−180° to 180°) next to Rotate 90°; double-click the preview to recentre
• Keyboard control: border tiles and the upload area are buttons; arrow keys nudge the portrait, + and − zoom
• An error message when a dropped file is not a PNG, JPG or WEBP

Fixed

• The safe-area ring now marks exactly where the portrait is cut (it sat 20px inside before); built-in radii updated to match
• File names with < or & broke the upload label

Removed

• Torch emoji, flicker animation and the random background canvas