link demo space and Guard.with_tiny usage

README.md

@@ -99,6 +99,9 @@ Strong on Neuralchemy, BIPIA indirect, notinject, public validation. Known weakn
 
 ```python
 from unplug import Guard
-guard = Guard(mode="local")  # loads Unplug-AI/unplug-tiny-v1
+
+guard = Guard.with_tiny()  # auto-downloads Unplug-AI/unplug-tiny-v1
 result = guard.scan(user_text)
 ```
+
+**Interactive demo:** [Unplug-AI/unplug-tiny-demo](https://huggingface.co/spaces/Unplug-AI/unplug-tiny-demo) (span highlights + redaction).