Support DeepSeek V4 Flash Vision Experimental

README.md

@@ -40,6 +40,10 @@ the Metal kernels and small native integration layers are adapted from
   sampling, cancellation, idle unload, and a bounded resident session pool.
   Supported acceleration includes SSD expert streaming, DeepSeek legacy MTP,
   DSpark, GLM MTP, directional steering, and model-specific memory admission.
+- **DeepSeek V4 Flash Vision Experimental.** Model Manager offers the
+  Vision Experimental main model, required image encoder, and matching DSpark
+  drafter. Image input works in chat, tool results, and the HTTP APIs, with
+  image-aware KV reuse. The 0731 drafter is not interchangeable with this model.
 - **Local HTTP APIs.** A configurable listener on `127.0.0.1:4000` exposes
   Models, Chat Completions, Completions, Anthropic Messages, and Responses APIs
   with streaming, tool calls, usage accounting, cancellation, and prefix-aware