refactor(hosts): never load example.lua; make it a pure template

hyprland.lua now just uses its defaults when no hosts/<hostname>.lua
matches, instead of requiring hosts/example.lua. example.lua is kept only
as a documented template for contributors.

hypr/hosts/example.lua

@@ -1,7 +1,10 @@
--- example.lua - no-op host fallback (mirrors example.conf)
+-- example.lua — TEMPLATE for a per-host config file (NOT loaded at runtime).
 --
--- Used by hyprland.lua when the machine's hostname does not match any
+-- Hyprland's Lua config only loads hosts/<hostname>.lua matching the current
--- hosts/<hostname>.lua file. Keep this file empty (or add shared defaults).
+-- machine's hostname. If none matches, hyprland.lua simply uses its defaults.
--- Create a file named after your host, e.g. hosts/MyHost.lua, to override
+-- This file is never required; it exists purely as a documented template.
--- host-specific settings.
+--
+-- To add your own machine, copy this to hosts/<your-hostname>.lua and fill it
+-- in. The hostname lookup strips any domain suffix (e.g. "laptop.home" -> "laptop").
+
 return {}

hypr/hyprland.lua

@@ -280,5 +280,6 @@ local hostname = (io.popen("hostname") or {}):read("*l") or ""
 hostname = hostname:gsub("%..*$", "") -- strip domain suffix
 local ok, err = pcall(require, "hosts." .. hostname)
 if not ok then
-    require("hosts.example")
+    -- No host file matches this machine; use the defaults already set above.
+    -- See hosts/example.lua for a template on adding your own host.
 end