Goal: ::punk::config loads stored configuration from toml files in the XDG-located config dir - parsed via the vendored tomlish module, never an ad-hoc parser - and consumers resolve settings with per-named-subshell overrides, so features like the G-013 debug-view startup defaults read declared user configuration instead of hardcoded fallbacks.
Acceptance: a setting declared in a toml file under the XDG-located config dir is visible through the punk::config API at repl startup, and with no config files present built-in defaults apply with no errors beyond the existing missing-dir notice; a named subshell resolves its own overriding value for a key also defined at the parent/default scope, and a subshell with no override inherits the outer value (proven with at least one real key); at least one shipped feature (the G-013 editbuf-view startup default is the natural first) reads its default through this path rather than a hardcoded value; all toml reading/writing in punk::config goes through the tomlish module, and the tomlish API procs punk::config consumes carry punk::args (PUNKARGS) documentation - added upstream in the tomlish project and re-vendored here before punk::config implementation proceeds.
Goal: `<punkexe> script [<scriptname>] [<args>...]` executes a script file or piped stdin content (scriptname optional when input is piped) in an interp preloaded with the basic punk modules and aliases a punk shell provides by default, and always terminates with the script's success/failure as its exit code - without the `shell` subcommand's shellfilter channel transforms/logging stacks and without ever dropping into an interactive shell - so agents can reliably make piped script calls to punk executables.
