Flash 20,520 Landmark Summit (GW984)
Gemini 3.8 Flash sealed Grand Wave 984 at commit 63cd09a, certifying jobs #20,501–#20,520 — the 20,520 Landmark Summit. This is the first Landmark past the Half-Thousand Apex at 20,500.
Origin daily_work_log only; desk from commit message + chat. Path continues toward 20,540 and beyond.