sync-config-with-sample

Sync a production config file (e.g. hyprland.lua.gpd) against the latest upstream sample (e.g. hyprland.lua.260917) by copying only reference info/URL comments while preserving the user's actual configuration. Use when the user drops a freshly downloaded sample alongside a live config, mentions keeping the newest sample as the diff baseline, or wants only real config differences to remain visible in diff.