feat(cli): add 'list' subcommand to display supported models with optional JSON output

docs/cli.md

@@ -254,6 +254,63 @@ aha delete --model qwen3vl-2b
 - Shows "Model not found" message if the model directory doesn't exist
 - Shows "Model deleted successfully" message after completion
 
+### list - List all supported models
+
+List all supported models with their ModelScope IDs.
+
+**Syntax:**
+```bash
+aha list [OPTIONS]
+```
+
+**Options:**
+
+| Option | Description | Default |
+|--------|-------------|---------|
+| `-j, --json` | Output in JSON format (includes name, model_id, and type fields) | false |
+
+**Examples:**
+
+```bash
+# List models in table format (default)
+aha list
+
+# List models in JSON format
+aha list --json
+
+# Short form
+aha list -j
+```
+
+**JSON Output Format:**
+
+When using `--json`, the output includes:
+- `name`: Model identifier used with `-m` flag
+- `model_id`: Full ModelScope model ID
+- `type`: Model category (`llm`, `ocr`, `asr`, or `image`)
+
+Example:
+```json
+[
+  {
+    "name": "qwen3vl-2b",
+    "model_id": "Qwen/Qwen3-VL-2B-Instruct",
+    "type": "llm"
+  },
+  {
+    "name": "deepseek-ocr",
+    "model_id": "deepseek-ai/DeepSeek-OCR",
+    "type": "ocr"
+  }
+]
+```
+
+**Model Types:**
+- `llm`: Language models (text generation, chat, etc.)
+- `ocr`: Optical Character Recognition models
+- `asr`: Automatic Speech Recognition models
+- `image`: Image processing models
+
 ## Supported Models
 
 | Model ID | Model Name | Description |

docs/cli.zh-CN.md

@@ -254,6 +254,63 @@ aha delete --model qwen3vl-2b
 - 如果模型目录不存在，显示"模型未找到"消息
 - 删除完成后显示"删除成功"消息
 
+### list - 列出所有支持的模型
+
+列出所有支持的模型及其 ModelScope ID。
+
+**语法：**
+```bash
+aha list [OPTIONS]
+```
+
+**选项：**
+
+| 选项 | 说明 | 默认值 |
+|------|------|--------|
+| `-j, --json` | 以 JSON 格式输出（包含 name、model_id 和 type 字段） | false |
+
+**示例：**
+
+```bash
+# 以表格格式列出模型（默认）
+aha list
+
+# 以 JSON 格式列出模型
+aha list --json
+
+# 简写形式
+aha list -j
+```
+
+**JSON 输出格式：**
+
+使用 `--json` 时，输出包含：
+- `name`：与 `-m` 参数一起使用的模型标识符
+- `model_id`：完整的 ModelScope 模型 ID
+- `type`：模型类别（`llm`、`ocr`、`asr` 或 `image`）
+
+示例：
+```json
+[
+  {
+    "name": "qwen3vl-2b",
+    "model_id": "Qwen/Qwen3-VL-2B-Instruct",
+    "type": "llm"
+  },
+  {
+    "name": "deepseek-ocr",
+    "model_id": "deepseek-ai/DeepSeek-OCR",
+    "type": "ocr"
+  }
+]
+```
+
+**模型类型：**
+- `llm`：语言模型（文本生成、对话等）
+- `ocr`：光学字符识别模型
+- `asr`：自动语音识别模型
+- `image`：图像处理模型
+
 ## 支持的模型
 
 | 模型标识 | 模型名称 | 说明 |

src/main.rs

@@ -6,6 +6,8 @@ use aha::{
     utils::{download_model, get_default_save_dir},
 };
 use clap::{Args, Parser, Subcommand, ValueEnum};
+use serde::Serialize;
+use serde_json;
 use rocket::{
     Config,
     data::{ByteUnit, Limits},
@@ -63,7 +65,7 @@ enum Commands {
     /// Run model inference directly
     Run(RunArgs),
     /// List all supported models
-    List,
+    List(ListArgs),
 }
 
 /// Common/shared arguments for server operations
@@ -168,6 +170,14 @@ struct DeleteArgs {
     model: WhichModel,
 }
 
+/// Arguments for the 'list' subcommand (list all supported models)
+#[derive(Args, Debug)]
+struct ListArgs {
+    /// Output models in JSON format (includes name, model_id, and type fields)
+    #[arg(short, long)]
+    json: bool,
+}
+
 /// Get the default weight path for a given model
 /// Returns ~/.aha/{model_id} e.g., ~/.aha/OpenBMB/VoxCPM1.5
 fn get_default_weight_path(model: WhichModel) -> String {
@@ -176,8 +186,17 @@ fn get_default_weight_path(model: WhichModel) -> String {
     format!("{}/{}", save_dir, model_id)
 }
 
+/// Model information for JSON output
+#[derive(Serialize)]
+struct ModelInfo {
+    name: String,
+    model_id: String,
+    #[serde(rename = "type")]
+    model_type: String,
+}
+
 /// List all supported models
-fn run_list() -> anyhow::Result<()> {
+fn run_list(args: ListArgs) -> anyhow::Result<()> {
     let models = [
         WhichModel::MiniCPM4_0_5B,
         WhichModel::Qwen2_5vl3B,
@@ -199,15 +218,29 @@ fn run_list() -> anyhow::Result<()> {
         WhichModel::FunASRNano2512,
     ];
 
-    println!("Available models:");
+    if args.json {
-    println!();
+        // JSON output
-    println!("{:<30} ModelScope ID", "Model Name");
+        let model_infos: Vec<ModelInfo> = models.iter().map(|model| {
-    println!("{}", "-".repeat(80));
+            let possible_value = model.to_possible_value().unwrap();
-    for model in models {
+            ModelInfo {
-        let possible_value = model.to_possible_value().unwrap();
+                name: possible_value.get_name().to_string(),
-        let name = possible_value.get_name();
+                model_id: model.model_id().to_string(),
-        let id = model.model_id();
+                model_type: model.model_type().to_string(),
-        println!("{:<30} {}", name, id);
+            }
+        }).collect();
+        println!("{}", serde_json::to_string_pretty(&model_infos)?);
+    } else {
+        // Table output (default)
+        println!("Available models:");
+        println!();
+        println!("{:<30} ModelScope ID", "Model Name");
+        println!("{}", "-".repeat(80));
+        for model in models {
+            let possible_value = model.to_possible_value().unwrap();
+            let name = possible_value.get_name();
+            let id = model.model_id();
+            println!("{:<30} {}", name, id);
+        }
     }
 
     Ok(())
@@ -517,7 +550,7 @@ async fn main() -> anyhow::Result<()> {
         Some(Commands::Delete(args)) => run_delete(args),
         Some(Commands::Download(args)) => run_download(args).await,
         Some(Commands::Run(args)) => run_run(args),
-        Some(Commands::List) => run_list(),
+        Some(Commands::List(args)) => run_list(args),
         None => {
             // Backward compatibility: when no subcommand is provided, use 'cli' behavior
             let model = cli.model.expect("Model is required (use -m or --model)");