Velo v1.7

Two big ones this update 🎨

🖼️ Custom backgrounds — Settings → Appearance → Background. Your own photo (darken/blur/fit) or a gradient preset (Aurora, Mesh, Sunset, Rosé…), plus gradient glow, vignette, film grain and a slow animated drift. Lower Panel opacity to turn the cards to glass.

🔄 One-click auto-update — when a new version drops, just hit Update & restart in the banner. Velo downloads it, swaps itself out and reopens on the new version — no more manual download-and-extract. (First automatic update kicks in from v1.7 onward.)