v2.0.1 — Font Picker UI update

Added

• Installed-font dropdown for Font Family setting (Obsidian-style suggestions).
• Single-click behavior: focusing/clicking the field opens the font list immediately.
• Keyboard support in the dropdown: ↑/↓ to navigate, Enter to select, Esc to close.
• Viewport-aware dropdown positioning (opens above when near the bottom of the screen).

Changed

• Replaced the native datalist font picker with a custom, themed suggestion menu.
• The font list is now installed fonts only (no generic/hard-coded entries).