Applies immediate rendering to all windows to eliminate the garbage
frame flash that appears before first render.
Also documents JetBrains phantom window suppression limitation (RE2
doesn't support lookaheads, so can't exclude toolbox).
Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>
Enables programs.hyprland at the system level, adds xdg-desktop-portal-hyprland
with per-compositor portal routing, and wires up a home-manager config for
endurance mirroring the Niri layout (same keybinds, monitors, window rules).
Niri remains the default SDDM session.
Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>
