Sources core.func, tools.func, error_handler.func, and api.func
instead of inline color vars and msg functions. Adds structured
sections (CONFIGURATION, OS DETECTION, UNINSTALL, INSTALL, MAIN)
matching the qbittorrent-exporter/pihole-exporter pattern.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
Addon script that installs Homebrew into an existing LXC container.
Dynamically detects the first non-root user, sets up multi-user access
via linuxbrew group with setgid directories, and configures shell
integration for both login and non-login shells.
Tested on Debian 13 (trixie) — brew doctor reports "ready to brew".
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
