test(evals): add experiment 001 HTML dashboard ecommerce

Add initial output for HTML dashboard ecommerce
experiment. This captures the base turn-1 output
for the new ecommerce dashboard evaluation case.

Author: urmzd

evals/data/experiments/001-html-dashboard-ecommerce/outputs/base/turn-1.html

@@ -0,0 +1,5 @@
+<div class="stat-card">
+    <h3>Total Revenue</h3>
+    <p class="stat-value">$215,430</p>
+    <p class="trend-indicator positive">+12.3%</p>
+</div>