Quadra 0.1.0

First public release.

• Tiling on the stock Accessibility API, never a private one: split
  (dwindle), columns (scrolling) and main + stack (master) layouts, gaps,
  a border on the focused window, floating, pseudo-tiling for windows that
  refuse a size, groups with a tab strip.
• Five workspaces per display plus a special (scratchpad) workspace,
  emulated by parking windows off-screen, with windows spread across
  workspaces at launch when a display is crowded.
• One F-key (F1 by default) as a virtual modifier or leader, Hyprland-style
  bindings in ~/.config/quadra/quadra.conf with live reload, the Omarchy
  binding set out of the box, and MOD+? for an overlay of every binding.
• A three-finger workspace swipe from the trackpad.
• A bar on every display: workspace pills with layout miniatures, layout,
  title, clock. Menu-bar item with start at login and a switch that
  auto-hides the macOS menu bar.
• quadra CLI over a Unix socket; a frame journal for crash recovery; every
  window restored to its original frame on quit.
• Xcode project generated from project.yml, Developer ID signing,
  notarisation and Homebrew release scripts.