CI: Test executable

[stevepolitodesign]

Adds end-to-end coverage ensuring the executable successfully generates
a passing Rails build.

[Copilot]

Pull request overview

This PR adds end-to-end testing for the Staples executable by creating a new CI job that generates a Rails application, runs its tests, and verifies it can start successfully.

Key changes:

• Adds a new test-template job to the GitHub Actions workflow with PostgreSQL service
• Implements complete lifecycle testing: app generation, database setup, test execution, and server startup verification

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[Copilot]

The DATABASE_URL is missing the database name. PostgreSQL connection URLs should include the database name: postgres://postgres:postgres@localhost:5432/test_app_development (or appropriate database name).

[Copilot]

The DATABASE_URL is missing the database name. For the test environment, this should be postgres://postgres:postgres@localhost:5432/test_app_test (or appropriate test database name).

[Copilot]

The DATABASE_URL is missing the database name. PostgreSQL connection URLs should include the database name: postgres://postgres:postgres@localhost:5432/test_app_development (or appropriate database name).

[Copilot]

The checkout action is missing persist-credentials: false which is a security best practice used in the build job (line 23). This prevents the GITHUB_TOKEN from persisting in the git config, reducing the risk of credential exposure.

Suggested change

	uses: actions/checkout@v4
	uses: actions/checkout@v4
	with:
	persist-credentials: false

[Copilot]

The timeout command will terminate the server after 10 seconds, but the subsequent curl request happens after only 5 seconds. The timeout approach is fragile. Consider using a more robust verification that waits for the server to be ready, such as a retry loop with curl until the port responds or the server logs indicate readiness.

Suggested change

	sleep 5
	curl -f http://localhost:3000 || exit 1
	for i in {1..30}; do
	if curl -fs http://localhost:3000 > /dev/null; then
	echo "Server is up!"
	break
	fi
	sleep 1
	done
	# Final check, fail if not up
	curl -f http://localhost:3000 || (echo "Server did not start in time" && exit 1)