Build a 9-slide Slidev deck for an internal mid-year engineering review for Team Atlas. The audience is our CTO and engineering managers, so keep it objective, precise, and executive-ready rather than motivational. Focus on H1 engineering velocity, sprint health, and the state of our tech debt, using concrete metrics and a couple of data-dense comparison slides where they genuinely help. Use the default theme and close with a clear H2 recommendation instead of a generic recap.