Add: mmsg dispatch <Tab>|<Enter> # to spit out compositor's command set

[tjavdar]

Hi,

Would it be possible to add a command to mmsg to dump/list all available dispatch actions at runtime?

Currently, tools like Niri support querying the compositor's command set via IPC (e.g., niri msg action), which makes discovering, searching, and fuzzy-matching keybindings directly from the CLI extremely fast:

mmsg dispatch | grep <keyword>

Having a subcommand like mmsg dispatch (or mmsg help dispatch / mmsg list-actions) print the supported dispatchers to stdout would be a great addition to the ecosystem. It would enable:

Quick command discovery without context-switching to documentation.

Dynamic shell completion (Bash/Zsh/Fish) for mmsg.

Easier scripting and IPC integration.

Thanks for the great work on mangowm!