Update root README — checkpoint-6000 logged

README.md

@@ -166,3 +166,14 @@ https://creativecommons.org/licenses/by-nc/4.0/
 **Epoch:** 0.146
 **Zone:** 📈 Good
 **Status:** Training ongoing — auto-uploaded via train_v12.py
+
+---
+
+### 🔵 Checkpoint — Step 6,000
+**Date:** June 24, 2026 at 14:22 IST
+**Checkpoint:** checkpoint-6000
+**Step:** 6,000 / 40,000 (15.0% complete)
+**Loss:** 0.2319
+**Epoch:** 0.175
+**Zone:** 🎯 Sweet Spot
+**Status:** Training ongoing — auto-uploaded via train_v12.py