Update model card

README.md

@@ -1,3 +1,30 @@
 ---
-{}
+library_name: stable-baselines3
+tags:
+  - reinforcement-learning
+  - battleship
+  - ppo
+  - maskable-ppo
+  - sb3-contrib
+  - custom-environment
 ---
+
+# Battleship PPO Agent — Hanks1234/battleship-ppo-phase3
+
+A MaskablePPO agent trained on a 10x20 Battleship board with custom
+T-shaped and Z-shaped ships using [sb3-contrib](https://sb3-contrib.readthedocs.io/).
+
+## Environment
+
+- **Board**: 10 columns x 20 rows
+- **Ships**: 10 ships including T-shaped Battleships and Z-shaped Carriers
+- **Observation**: 5-channel binary image (5, 20, 10)
+- **Action**: Discrete(200) with action masking (no repeat shots)
+
+## Usage
+
+```python
+from training.hub import load_model_from_hub
+
+model = load_model_from_hub("Hanks1234/battleship-ppo-phase3")
+```