Supervises foundational infrastructure that the rest of the application depends on.

Uses rest_for_one because Events (an Elixir Registry) is the pub/sub bus for the entire application. If Events crashes under one_for_one, every subscriber silently loses its registration with no error and no crash. rest_for_one ensures all children after Events re-initialize and re-subscribe.

Children

Foundation.Supervisor (rest_for_one)
├── Minga.Language.Registry      ETS, language definitions
├── Minga.Events                 Registry(:duplicate), pub/sub bus
├── Minga.Config.Options         GenServer, typed options
├── Minga.Keymap.Active          Active keymap state
├── Minga.Config.Hooks           Lifecycle hooks
├── Minga.Config.Advice          Before/after command advice (ETS)
├── MingaAgent.Tool.Registry     Agent tool specs (ETS)
└── Minga.Language.Filetype.Registry      Filetype detection

Language.Registry is first because it has no dependencies and nothing depends on it within this group. Events is second so that everything after it re-subscribes on Events restart.