Add completed experiment results from dash0 runs after 2026-05-13: - qwen27b chat 0-8k: harness +118.6% over no-harness (0.2696 vs 0.1233 req/s/GPU) - qwen235b prefill TTFT 3s/6s/9s: harness +76.8% (0.3921 vs 0.2217 req/s/GPU) Mark old 7-GPU and pre-5/13 docs as superseded. Update implementation log with completed run status.