Daily Test Coverage Improver - Updates to complete configuration

[github-actions]

Purpose

This PR adds the coverage collection action required by the Daily Test Coverage Improver workflow. This action automates the test coverage generation process for the AIKit repository.

What's included

.github/actions/daily-test-improver/coverage-steps/action.yml

A composite GitHub Action that:

1. Installs Go dependencies - Downloads all required Go modules
2. Runs tests with coverage - Executes make test which runs the full test suite with race detection and coverage profiling
3. Generates coverage summary - Produces both textual and HTML coverage reports
4. Uploads coverage artifacts - Makes coverage data available for analysis

How it works

The action follows the existing test infrastructure documented in the repository's Makefile:

make test  # Runs: go test -v ./... -race -coverprofile=coverage.txt -covermode=atomic

All step outputs are logged to coverage-steps.log for debugging.

Coverage artifacts

After running, the action uploads three files as the "coverage" artifact:

• coverage.txt - Go coverage profile (used for programmatic analysis)
• coverage.html - Human-readable HTML coverage report
• coverage-steps.log - Complete log of all steps executed

Next steps

After this PR is merged, the Daily Test Coverage Improver will be able to:

1. Run these steps to generate fresh coverage data
2. Analyze the coverage report to identify gaps
3. Create focused PRs that add tests to improve coverage

Maintainer review needed

Please review this action to ensure:

• ✅ The steps are appropriate for this project
• ✅ The coverage artifacts are useful for analysis
• ✅ The logging is adequate for debugging
• ✅ The artifact retention (30 days) is reasonable

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This PR was created by the Daily Test Coverage Improver workflow.

AI generated by Daily Test Coverage Improver

[Copilot]

Pull Request Overview

This PR adds a composite GitHub Action to automate test coverage generation for the Daily Test Coverage Improver workflow. The action orchestrates the complete coverage collection process by executing the existing make test command and generating both machine-readable and human-readable coverage reports.

Key changes:

• Creates a new composite action that runs tests with coverage and uploads artifacts
• Integrates with existing Makefile test infrastructure
• Provides comprehensive logging for debugging