Add note on handles/streams order

crates/burn-fusion/src/client/mutex.rs

@@ -211,7 +211,7 @@ where
         core::mem::drop(server_other);
         core::mem::drop(server_current);
 
-        // Expected order [qtensor, scale, <offset>]
+        // NOTE: the expected order is known [qtensor, scale, <offset>]
         let offset = tensor.qparams.offset.map(|desc| {
             FusionTensor::new(
                 ids.pop().unwrap(),

crates/burn-jit/src/fusion/base.rs

@@ -82,6 +82,7 @@ impl<R: JitRuntime, F: FloatElement, I: IntElement> ReprBackend for JitBackend<R
         scheme: QuantizationScheme,
     ) -> burn_tensor::ops::QuantizedTensor<Self> {
         match handles.len() {
+            // NOTE: the order of the handles is known [qtensor, scale, <offset>]
             3 => {
                 let mut handles = handles;
                 let offset = handles.pop().unwrap();