implement more models and rhai examples

heromodels/src/db.rs

@@ -71,3 +71,13 @@ impl<E> From<bincode::error::EncodeError> for Error<E> {
         Error::Encode(value)
     }
 }
+
+impl<E: std::fmt::Debug + std::fmt::Display> std::fmt::Display for Error<E> {
+    fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
+        match self {
+            Error::DB(e) => write!(f, "Database error: {}", e),
+            Error::Decode(e) => write!(f, "Failed to decode model: {}", e),
+            Error::Encode(e) => write!(f, "Failed to encode model: {}", e),
+        }
+    }
+}