docs: Add YAML metadata to dataset card

- Add proper Hugging Face dataset metadata
- Include task categories, tags, and schema information
- Improve discoverability and documentation standards

README.md

@@ -1,7 +1,43 @@
+---
+license: cc-by-4.0
+task_categories:
+  - tabular-classification
+  - tabular-regression
+language:
+  - en
+tags:
+  - healthcare
+  - demographics
+  - geography
+  - australia
+  - census
+  - health-data
+  - socioeconomic
+  - geospatial
+size_categories:
+  - 1K<n<10K
+dataset_info:
+  features:
+    - name: sa2_code_2021
+      dtype: string
+    - name: sa2_name_2021
+      dtype: string
+    - name: total_population_2021
+      dtype: int64
+    - name: median_age_2021
+      dtype: float64
+  config_name: default
+  data_files:
+    - split: train
+      path: "ahgd_master_dataset_real.parquet"
+  download_size: 133642
+  dataset_size: 2472
+---
+
 # Australian Healthcare Geographic Database (AHGD) 
 
 [![License: CC BY 4.0](https://img.shields.io/badge/License-CC%20BY%204.0-lightgrey.svg)](https://creativecommons.org/licenses/by/4.0/)
-[![Dataset Size](https://img.shields.io/badge/Dataset-2,472%20records-blue.svg)](https://huggingface.co/datasets/ahgd)
+[![Dataset Size](https://img.shields.io/badge/Dataset-2,472%20records-blue.svg)](https://huggingface.co/datasets/massomo/ahgd)
 
 ## Overview