add dataset updates with doc updates

README.md

@@ -54,4 +54,51 @@ battlesnake play -W 11 -H 11 --name 'Python Starter Project' --url http://localh
 
 Continue with the [Battlesnake Quickstart Guide](https://docs.battlesnake.com/quickstart) to customize and improve your Battlesnake's behavior.
 
+## Included Competitive Snake
+This repo now includes `snakes/BestBattleSnake.py`, a stronger default snake that combines:
+- collision and head-to-head risk checks
+- flood-fill space evaluation to avoid traps
+- food routing that gets more aggressive as health drops
+- tail access checks for better long-term survival
+
+Run it explicitly with:
+
+```sh
+SNAKE=BestBattleSnake python main.py
+```
+
+Optional duel tuning (when only 2 snakes are alive):
+
+```sh
+BATTLE_SNAKE_DUEL_STYLE=balanced python main.py
+```
+
+Allowed values: `safe`, `balanced`, `aggressive`.
+
+## Export Training Dataset
+Game saves now include a `dataset` section with labeled move samples.
+
+Export all stored samples to JSONL:
+
+```sh
+python -m server.DatasetExporter --input data --output data/dataset/good_moves.jsonl
+```
+
+Or with `just`:
+
+```sh
+just export-dataset
+```
+
+To store compact dataset-only records (JSONL) and skip full per-game JSON files:
+
+```sh
+STORE_DATASET_ONLY=true DATASET_JSONL_PATH=data/dataset/good_moves.jsonl python main.py
+```
+
+Optional compact storage tuning:
+- `DATASET_ROTATE_DAILY=true` creates one JSONL file per day (default: `true`)
+- `DATASET_JSONL_MAX_MB=50` rotates when file reaches max size in MB (default: `50`)
+- `DATASET_COMPRESS_ROTATED=true` gzip-compresses rotated/old JSONL files (default: `true`)
+
 **Note:** To play games on [play.battlesnake.com](https://play.battlesnake.com) you'll need to deploy your Battlesnake to a live web server OR use a port forwarding tool like [ngrok](https://ngrok.com/) to access your server locally.