Fixes from subagent review:
- render-tests.lisp: added (in-suite box-suite) — tests were registered
to default suite, never executed by runner
- dirty-tests.lisp: same fix
- cl-tui.asd: version 0.2.0 → 0.3.0
- render.lisp: component-children default method (c t) nil for
protocol completeness (component-parent already had this)