Writes mob.exs (build-environment config: mob_dir, elixir_lib)
and ensures .gitignore ignores it.
Options
--local— pre-fillmob_dirandelixir_libfromMOB_DIR/MOB_DEV_DIRenv vars (or sibling-directory fallbacks). Without--localthe file usesPath.join(File.cwd!(), "deps/mob")and readsMOB_ELIXIR_LIB/:code.lib_dir(:elixir)at runtime.
Other orchestrator flags accepted but inert.
Idempotency
mob.exsis created withon_exists: :skip— re-running won't overwrite an edited mob.exs..gitignorepatch checks formob.exsbefore appending.
Typically called by mix mob.adopt, not directly.