diff --git a/docs/harness-ablation/profile-driven-harness-implementation-20260512.md b/docs/harness-ablation/profile-driven-harness-implementation-20260512.md
index f85b9e4..12b886b 100644
--- a/docs/harness-ablation/profile-driven-harness-implementation-20260512.md
+++ b/docs/harness-ablation/profile-driven-harness-implementation-20260512.md
@@ -71,3 +71,13 @@ Run the same qwen3.5-27b chat 0-8k setup as the current ablation baseline:
 
 The no-harness min-prompt baseline is already available and only needs to be reused for comparison unless the setup changes.
 
+## Experiment Started
+
+Started on `dash0` (`11.73.2.172`) at commit `17e9681`.
+
+- tmux session: `qwen27b-profileplanner-harness-20260512`
+- spec: `.aituner-tight/specs/dash0-qwen27b-chat-0-8k-ttft4s-tpot25-gpu3skip-12iter-harness-profileplanner-20260512.json`
+- study id: `dash0-qwen27b-chat-0-8k-ttft4s-tpot25-gpu3skip-12iter-harness-profileplanner-20260512`
+- log: `.aituner-tight/logs/qwen27b-profileplanner-harness-20260512.log`
+- status at launch check: `trial-0001` baseline is running under AITuner; no manual intervention in the tuning loop.
+