Extract bos-settings to its own repo; add breadhelp; JSON-driven Hyprland config

bos-settings moves to git.breadway.dev/Breadway/bos-settings (full history
preserved via git-filter-repo) so its release cadence is decoupled from
BOS's own. breadhelp takes its place as this repo's workspace member: a
GTK4 onboarding/help center replacing the old bos-welcome/bos-keybinds
bash scripts with searchable guides, an interactive keybind viewer
(sourced from the new keybinds.toml, not parsed out of hyprland.lua or
hardcoded), a troubleshooting wizard with one-click fixes, and a proper
first-run tour. bos-netcheck extracts bos-welcome's network-check half,
which still needs to run every login independent of breadhelp's own
first-run gating.

hyprland.lua's keybinds/settings/monitors/autostart are now JSON-driven
(binds.json/settings.json/monitors.json/autostart.json) with every
loader pcall-wrapped and falling back to hardcoded defaults per field on
bad or missing config, so bread* apps (bos-settings' new editors, and
breadhelp's keybind viewer) can read/write this config without ever
being able to leave the compositor unable to start.

CI's package.yml now builds breadhelp instead of bos-settings on tag
push; bos-settings needs its own equivalent workflow in its new repo
(not yet set up).

packaging/arch/PKGBUILD

@@ -1,38 +0,0 @@
-# Maintainer: Breadway <rileyhorsham@gmail.com>
-
-pkgname=bos-settings
-pkgver=0.1.0
-pkgrel=1
-pkgdesc="System settings app for Bread OS"
-arch=('x86_64')
-url="https://github.com/Breadway/bos"
-license=('MIT')
-# Some Rust deps (ring/mlua) build vendored C/asm into static archives; makepkg's
-# default -flto=auto emits GCC LTO bitcode the Rust (lld) link cannot read,
-# causing undefined-symbol errors. Disable LTO.
-options=(!lto !debug)
-depends=('gtk4' 'glib2' 'hicolor-icon-theme')
-optdepends=(
-  'snapper: snapshot management view'
-)
-makedepends=('rust' 'cargo')
-source=("${pkgname}-${pkgver}.tar.gz")
-sha256sums=('SKIP')
-
-build() {
-  cd "${srcdir}/${pkgname}-${pkgver}"
-  cargo build --release --locked -p bos-settings
-}
-
-check() {
-  cd "${srcdir}/${pkgname}-${pkgver}"
-  cargo test --release --locked -p bos-settings
-}
-
-package() {
-  cd "${srcdir}/${pkgname}-${pkgver}"
-  install -Dm755 target/release/bos-settings "${pkgdir}/usr/bin/bos-settings"
-  install -Dm644 packaging/arch/bos-settings.desktop \
-    "${pkgdir}/usr/share/applications/bos-settings.desktop"
-  install -Dm644 LICENSE "${pkgdir}/usr/share/licenses/${pkgname}/LICENSE"
-}