This looks really neat, and I really enjoy using search-first interfaces, like blender, spotlight, the windows start menu search and (arguably) emacs. It's definitely a better approach than just dumping everything into (context) menus.
But on some level, going search-first feels a bit like admitting defeat - although I get that with limited resources and a quicky evolving set of commands, having a dedicated UI/UX genius on payroll might be infeasible.
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