feat(kitty): graphical railroad diagrams

[bennypowers]

railroads.webm

[Copilot]

Pull Request Overview

This PR introduces graphical railroad diagram support for nvim-regexplainer, allowing users to visualize regular expressions as graphical diagrams instead of just text narratives. The implementation leverages hologram.nvim for image display in supported terminals (primarily Kitty) and includes automatic Python dependency management.

Key changes include:

• Added graphical renderer with Python-based railroad diagram generation
• Implemented hologram.nvim integration for image display in Neovim
• Created automatic dependency management system for Python packages
• Added comprehensive testing for graphical functionality

Reviewed Changes

Copilot reviewed 17 out of 18 changed files in this pull request and generated 5 comments.

Show a summary per file

File	Description
lua/regexplainer/renderers/graphical/init.lua	Main graphical renderer implementing railroad diagram generation and image display
lua/regexplainer/python/railroad_generator.py	Python script for converting regex components to railroad diagrams
lua/regexplainer/graphics/hologram.lua	Hologram.nvim integration for image display
lua/regexplainer/deps/init.lua	Automatic Python dependency management system
lua/regexplainer/health.lua	Health check integration for graphical dependencies
tests/regexplainer/graphical_spec.lua	Test suite for graphical rendering functionality
tests/regexplainer/deps_spec.lua	Test suite for dependency management
plugin/nvim-regexplainer.lua	Added cache clearing command
README.md	Documentation for new graphical mode features

Comments suppressed due to low confidence (1)

lua/regexplainer/buffers/split.lua:1

• This comment indicates that debug code was removed, but the comment itself should also be removed for cleaner code.

local Shared = require 'regexplainer.buffers.shared'

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