v1.3 — UI Scale, Texture Themes, Multi-Monitor Improvements

🔧 New Features
• UI Scale — Adjust bar size from 60% to 115%. Too big on a laptop or too small on a large monitor? Now you can set it just right.
• Bar Textures — 6 built-in themes (Galaxy, Sakura, Noise, Ocean, Avatar World, Good Bad Souls) or load your own image to create a custom theme. Supports JPEG, PNG, WebP, BMP.
• Texture Opacity — Control the intensity of your selected texture.

🖥️ Multi-Monitor
• Per-monitor fullscreen detection — Playing a game fullscreen on Monitor 1? The bar on Monitor 2 stays visible.
• Fixed positioning when switching displays — bar now centers correctly on the selected monitor.

🎵 Equalizer
• Better support for external audio devices (sound bars, Bluetooth speakers, etc.).
• Expanded sensitivity range — stronger visualization for low-signal devices.

🐛 Fixes
• Fixed visual flash when opening settings.
• Improved window size and clickable region calculations.