Update dataset card with column docs and cross-links

README.md

@@ -18,7 +18,13 @@ size_categories:
 
 Whisky bottle catalog, price history, and auction market statistics exported from [dramvalue.com](https://dramvalue.com).
 
-**Last export:** 2026-08-20 17:38 UTC
+**Last export:** 2026-08-20 17:43 UTC
+
+| | |
+|---|---|
+| Bottles | 30,324 |
+| Price records | 1,351,454 |
+| Market stat rows | 1,719 |
 
 ## Files
 
@@ -28,19 +34,40 @@ Whisky bottle catalog, price history, and auction market statistics exported fro
 | `dramvalue_prices.csv` | 1,351,454 | Individual price records (auction, retail, import) |
 | `dramvalue_market_stats.csv` | 1,719 | Monthly auction house aggregates |
 
-## Install
+### `dramvalue_bottles.csv`
 
-```bash
-curl -fsSL https://raw.githubusercontent.com/tedrubin80/dramvalue/main/scripts/install_huggingface_dataset.sh | bash
-```
+Key columns: `id`, `name`, `distillery`, `brand`, `category`, `age_statement`, `proof`, `size_ml`, `price_count`, `avg_price`, `min_price`, `max_price`, `last_price`, `last_price_date`.
+
+### `dramvalue_prices.csv`
+
+Key columns: `price_id`, `bottle_id`, `bottle_name`, `price`, `currency`, `price_usd`, `source`, `source_name`, `auction_house`, `source_url`, `transaction_date`.
+
+### `dramvalue_market_stats.csv`
+
+Key columns: `auction_name`, `auction_slug`, `period_date`, `winning_bid_mean`, `trading_volume`, `lots_count`.
+
+## Download
 
-Or manually:
+**Hugging Face:** [datamatters24/dramvalue-whisky-prices](https://huggingface.co/datasets/datamatters24/dramvalue-whisky-prices)
 
 ```bash
 pip install huggingface_hub
 huggingface-cli download datamatters24/dramvalue-whisky-prices --repo-type dataset --local-dir ./data/huggingface
 ```
 
+**Kaggle:** [theodorerubin/dramvalue-whisky-prices](https://www.kaggle.com/datasets/theodorerubin/dramvalue-whisky-prices)
+
+```bash
+pip install kaggle
+kaggle datasets download -d theodorerubin/dramvalue-whisky-prices -p ./data/kaggle --unzip
+```
+
+One-liner (Hugging Face):
+
+```bash
+curl -fsSL https://raw.githubusercontent.com/tedrubin80/dramvalue/main/scripts/install_huggingface_dataset.sh | bash
+```
+
 ## License
 
 CC0 1.0 Universal (public domain dedication).