refactor(preset): return ffargs via nameref instead of global variable

load_preset now accepts the name of the caller's array as a second
argument and populates it via a nameref (local -n), replacing the
previous implicit global ffargs. The preset is sourced into a local
ffargs contained within load_preset's scope and copied to the caller
on return.

encode_one declares its own local ffargs=() and passes its name to
load_preset, making the data flow explicit and eliminating the implicit
coupling through the global. The nameref variable is prefixed with an
underscore to avoid accidental aliasing of any same-named local in the
calling scope.

0 files changed, 0 insertions, 0 deletions