Bump MRuby to 3.4

[pusewicz]

No description provided.

[Copilot]

Pull Request Overview

This pull request bumps the MRuby version to 3.4.0 and updates the naming conventions for color and pixel factory methods throughout the codebase. Key changes include:

• Renaming of color factory functions (e.g., from rgb_f to cf_make_color_rgb_f) in both Ruby tests and C source files.
• Removal of tests and implementations for color operations and color–pixel conversions.
• Updating the Rakefile to reflect the new MRuby version and its extraction directory.

Reviewed Changes

Copilot reviewed 4 out of 4 changed files in this pull request and generated no comments.

File	Description
test/color_test.rb	Updated factory method names and removed tests for color operations.
src/color.c	Renamed factory functions and removed color operation and conversion functions.
example/example.rb	Introduced a new Circle class and updated app creation to use constants.
Rakefile	Bumped MRuby version to 3.4.0 and adjusted dependency directory handling.

Comments suppressed due to low confidence (3)

test/color_test.rb:55

• The removal of 'Cute::Color operations' tests may lead to missing coverage for color operations. Verify that these functionalities are intentionally deprecated or update the tests if the features are still supported.

end

Rakefile:36

• Verify that MRuby 3.4.0 extracts to the correct directory without needing the mv command. If the archive extraction does not produce the expected directory structure, update the extraction steps accordingly.

sh "unzip -q #{MRUBY_ARCHIVE} -d #{DEPS_DIR}"

src/color.c:424

• [nitpick] Since the factory methods have been renamed to use the 'cf_make_' prefix, consider removing or updating this TODO comment to reflect the completed change.

// TODO: Rename these to match CF