Separate linting and test running tasks in Actions workflow

🎯 Goal / Objective

A clear and concise description of what this task aims to achieve. Why is this task important?

The Actions workflow at .github/workflows/lint.yml does both lint checking and test running. These are separate tasks that should be run individually in their own workflows. This way, if linting fails, it does not prevent the tests from being run or vice versa.

✅ Tasks to be Completed

A checklist of the specific, actionable steps required to complete this issue. This helps track progress.

• Since the file is called lint.yml, remove the test running step from the file.
• Add the test running step to a new file. Give it the same triggers as the lint job (push to main or PR to main).

Acceptance Criteria

A checklist of conditions that must be met for this task to be considered complete. How will we verify that it's done correctly?

• Linting and testing are not done in the same job.
• Both linting and testing run on the same triggers.

Additional Context

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• GitHub Actions documentation

Start by inspecting .github/workflows/lint.yml and identify its current triggers and test-running step. Remove the test step from lint.yml, place it in a separate workflow with matching push-to-main and pull-request-to-main triggers, and verify the two tasks are no longer in the same job.