Update root README — checkpoint-5000 logged

README.md

@@ -155,3 +155,14 @@ https://creativecommons.org/licenses/by-nc/4.0/
 **Epoch:** 0.117
 **Zone:** 📈 Good
 **Status:** Training ongoing — auto-uploaded via train_v12.py
+
+---
+
+### 🔵 Checkpoint — Step 5,000
+**Date:** June 24, 2026 at 07:38 IST
+**Checkpoint:** checkpoint-5000
+**Step:** 5,000 / 40,000 (12.5% complete)
+**Loss:** 0.2748
+**Epoch:** 0.146
+**Zone:** 📈 Good
+**Status:** Training ongoing — auto-uploaded via train_v12.py