Revise README for Qwen3 ASR project

Updated project description and clarified functionality.

Author: juntao

README.md

@@ -1,6 +1,10 @@
-# Qwen3 ASR Rust
+# Qwen3 ASR -- Rust CLI tools
 
-Pure Rust implementation of [Qwen3-ASR](https://github.com/QwenLM/Qwen3-ASR) automatic speech recognition. Supports two backends: **libtorch** (via the `tch` crate, cross-platform with optional CUDA) and **MLX** (Apple Silicon native via Metal GPU). Loads model weights directly from safetensors files and re-implements the complete neural network forward pass in Rust.
+Pure Rust implementation of [Qwen3-ASR](https://github.com/QwenLM/Qwen3-ASR) automatic speech recognition. The project builds a cross-platform CLI tool suitable for agentic skills for AI agents and bots.
+
+- **asr** generates text from an input audio file (supports most codex and file formats)
+
+Supports two backends: **libtorch** (via the `tch` crate, cross-platform with optional CUDA) and **MLX** (Apple Silicon native via Metal GPU). Loads model weights directly from safetensors files and re-implements the complete neural network forward pass in Rust.
 
 ## Architecture