Regenerates priv/generated/mob_plugins.exs — the host's runtime plugin
manifest — from the activated plugins' tier-3/4 manifest sections.
mix mob.regen_plugin_manifest # regenerate the file
mix mob.regen_plugin_manifest --check # verify on-disk matches, non-zero on driftTiers 3 (multi-screen) and 4 (sub-app) are pure-Elixir and runtime-wired: the
on-device Mob.Plugins module reads this file at boot to learn which screens,
lifecycle hooks, settings, and notification handlers the activated plugins
declared (MobDev.Plugin.activated/0 is compile-time only). Spec-v2
:screens_generators run here, under the host-config audit.
Like mix mob.regen_driver_tab, the output is committed so reviewers see the
runtime surface, and the file is regenerated whenever config :mob, :plugins
changes. mob.doctor runs --check to report drift.