Support DeepSeek V4 Flash Vision Experimental

native/metal/README.md

@@ -12,3 +12,10 @@ interfaces and are not copies of DS4 application code.
 DS4Server builds and bundles this local snapshot; it does not read a sibling
 DS4 checkout. Rust owns the model, graph, session, sampling, and lifecycle.
 Objective-C remains only at the platform Metal boundary.
+
+
+The Vision Experimental primitives added for issue #100 were reviewed against
+DS4 `0aaea5a238fb41a35106a551e73c8409dfb751ac`. The new Metal file and visual
+routing kernel follow that reference; image preprocessing, encoder graph,
+visual prompt masks and session identities remain in Rust. See
+`docs/issue100-vision/README.md` for the source and validation receipts.