test: first working test run

[bougyman]

No description provided.

[Copilot]

Pull request overview

This PR establishes the initial test infrastructure by replacing the basic test setup with a more comprehensive test helper configuration and fixing a critical path reference error.

• Replaces test/test_helper.rb with test/helper.rb that includes coverage tools, WebMock configuration, and test setup
• Fixes incorrect require path from domeapi/version to kalshi/version in lib/kalshi.rb
• Updates Rake test task configuration to use Rake::TestTask instead of Minitest::TestTask

Reviewed changes

Copilot reviewed 5 out of 5 changed files in this pull request and generated 2 comments.

Show a summary per file

File	Description
test/test_helper.rb	Removed legacy test helper
test/kalshi/test_rb.rb	Updated to require new 'helper' and removed placeholder test
test/helper.rb	Added comprehensive test helper with SimpleCov, WebMock, and Minitest configuration
lib/kalshi.rb	Fixed require path from 'domeapi/version' to 'kalshi/version'
Rakefile	Switched from Minitest::TestTask to Rake::TestTask with custom configuration