Helix Modal text editor with selection-first editing and tree-sitter integration. The model is simple: select text first, then act on it (delete, yank, change). Supports multiple simultaneous selections. Modes & Navigation - Normal : navigation and editing — inserts before selection, enters select mode - Insert : typing mode — or returns to Normal - Select/extend : making multi-cursor selections Key commands in Normal mode: - search forward, / next/previous match - go to definition, / next/previous diagnostic - opens Space mode (pickers, LSP actions) - / select around/inside textobjects (tree…