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).

breadhelp/content/getting-started/01-what-is-bos/content.beginner.md

@@ -0,0 +1,10 @@
+# Welcome!
+
+This computer runs BOS — a friendly desktop built for you.
+
+- Hold down the SUPER key (it looks like a little window logo) and press other keys to do things.
+- [Show Keybind]super + /[/Show Keybind] always shows you every shortcut, so you never have to memorize anything.
+- [Show Keybind]super + ,[/Show Keybind] opens Settings.
+- If anything ever looks wrong, your computer saves a safety copy every time something changes — nothing is ever truly lost.
+
+- [Run]bos-settings|Open Settings[/Run]

breadhelp/content/getting-started/01-what-is-bos/content.md

@@ -0,0 +1,21 @@
+# Welcome to BOS
+
+BOS (the Bread Operating System) is a complete Hyprland desktop with the
+bread ecosystem preinstalled: a bar, a launcher, notes, Wi-Fi profiles, and a
+settings app that needs no config files.
+
+## The basics
+
+- SUPER is the Windows/Cmd key — almost everything starts with it.
+- [Show Keybind]super + /[/Show Keybind] shows the full keybind cheatsheet any time.
+- [Show Keybind]super + ,[/Show Keybind] opens BOS Settings — configure the bar, launcher, Wi-Fi, notes, snapshots, and package updates all in one place.
+- [Show Keybind]super + space[/Show Keybind] opens the app launcher (breadbox).
+- [Show Keybind]super + return[/Show Keybind] opens a terminal.
+
+## Safety net
+
+Your system snapshots itself on every package change. If an update breaks
+something, roll it back from BOS Settings or pick a snapshot right from the
+GRUB menu at boot.
+
+- [Run]bos-settings|Open BOS Settings[/Run]

breadhelp/content/getting-started/01-what-is-bos/meta.toml

@@ -0,0 +1,5 @@
+title = "What is BOS?"
+difficulty = "beginner"
+tags = ["overview", "welcome"]
+related = ["02-essential-keybinds"]
+estimated_minutes = 2