tests/use_cases/ holds scenario-driven tests run by the Claude Code agent,
which acts as both the test runner and mock user. Each test prints a
structured transcript; Claude evaluates correctness.
First test: test_cli_startup.py — spawns cli.py with a subprocess, reads
the welcome banner, sends EOF, and verifies exit code 0.
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
