Introduced a new cleanup_lxc function in core.func to standardize and enhance system cleanup across scripts. Updated debian.sh and debian-install.sh to use this function instead of inline cleanup commands, improving maintainability and consistency. Also updated author and copyright information.
The ssh_check function was moved from build.func to core.func and enhanced to allow an override and to skip warnings for localhost connections. The shell_check function was simplified to directly check for Bash and provide clearer messaging. These changes centralize environment checks and improve user experience.
Enhanced the shell_check function to handle both 'bash' and '-bash' as valid shells, added a debug message to display the detected shell, and changed the exit code to 1 for clearer error signaling.
Reworks the app defaults save/update logic in misc/build.func to support updating existing defaults with a diff and interactive menu, and adds robust var_* parsing and whitelisting. Removes legacy error and curl handler functions from misc/core.func, streamlining error handling and reducing code duplication.
Expanded explain_exit_code with more exit codes for various tools (APT, Node.js, Python, databases) for better diagnostics. Updated silent() to set BASH_COMMAND on failure for improved error context.
