All tunable values (sizes, timings, text sizes, colours, polls, equalizer
presets and bands, hotspot, extra output) are settings declared once in
config.rs, read from ~/.config/amane/config.toml, applied live on save.
shell.conf's four values move over on first start.
settings.rs: a normal window (control centre gear, or ipc config) with a
page per part, a page per Hyprland category, search and reset per row.
hypr.rs: Hyprland's options from hyprctl descriptions/getoption, applied
with hl.config and kept in ~/.config/hypr/amane.lua.
server2