This Neovim plugin provides a polished interface for invoking LSP code actions (refactorings, quickfixes, etc.) with real-time diff previews. It supports multiple picker frameworks (telescope, fzf-lua, snacks, vim.ui.select, and a custom buffer picker) and diff backends (vim, delta, difftastic, diff-so-fancy). The architecture is modular: a finder module collects actions from all LSP clients, filters and sorts them, then passes them to a configurable picker. The plugin handles action resolution (LSP resolveProvider), preview generation, and application of workspace edits. It is well-structured with base classes for pickers, previewers, and diff backends, making it easy to extend. The buffer picker is particularly sophisticated, offering hotkeys, category grouping, nested group support, and auto-preview.