Before/after/around/override advice for editor commands.

Advice functions wrap existing command execution, similar to Emacs's advice-add system. Four phases are supported:

Uses ETS with read_concurrency: true for zero-contention reads in the hot dispatch_command path. Writes only happen at config load/reload.

Composition

Multiple advice functions for the same phase and command run in registration order. For :around, they nest: the outermost advice wraps the next one, which wraps the next, with the original command at the center.

If an :override is registered, it replaces the command entirely. Multiple overrides chain (last registered wins as the innermost). :before and :after still run around an overridden command.

Examples

# Transform state before save
Minga.Config.Advice.register(:before, :save, fn state ->
  state
end)

# Full control: conditionally skip formatting
Minga.Config.Advice.register(:around, :format_buffer, fn execute, state ->
  if some_condition?(state) do
    execute.(state)
  else
    # Return state unchanged to skip the command
    state
  end
end)

# Completely replace a command
Minga.Config.Advice.register(:override, :save, fn state ->
  my_custom_save(state)
end)