Update root README — checkpoint-3000 logged

README.md

@@ -122,3 +122,14 @@ https://creativecommons.org/licenses/by-nc/4.0/
 **Epoch:** 0.058
 **Zone:** 📈 Good
 **Status:** Training ongoing — auto-uploaded via train_v12.py
+
+---
+
+### 🔵 Checkpoint — Step 3,000
+**Date:** June 23, 2026 at 17:35 IST
+**Checkpoint:** checkpoint-3000
+**Step:** 3,000 / 40,000 (7.5% complete)
+**Loss:** 0.4153
+**Epoch:** 0.088
+**Zone:** 📈 Good
+**Status:** Training ongoing — auto-uploaded via train_v12.py