feat: mock配置迁移至JSON格式并修复body匹配

- 将mock配置从YAML格式迁移到JSON格式
- 修复JSON字符串格式body匹配失败问题
- 添加MCP功能模块
- 更新mock-spec.md规范文档

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

tests/integration_test.rs

@@ -1,35 +1,25 @@
 use std::fs::{self, File};
 use std::io::Write;
 use tempfile::tempdir;
-use mock_server::models::MockSource;
+use mock_server::models::MockRule;
 use mock_server::loader::MockLoader;
 
 #[test]
 fn test_config_deserialization() {
-    // 测试 1：验证单接口 YAML 解析
-    let single_yaml = r#"
-        name: "auth_v1"
-        request:
-          method: "POST"
-          path: "/api/v1/login"
-        response:
-          status: 200
-          body: "inline_content"
-    "#;
-    let res: MockSource = serde_yaml::from_str(single_yaml).expect("应该成功解析单接口");
-    assert_eq!(res.flatten().len(), 1);
-
-    // 测试 2：验证多接口 YAML 数组解析
-    let multi_yaml = r#"
-        - name: "api_1"
-          request: { method: "GET", path: "/1" }
-          response: { status: 200, body: "b1" }
-        - name: "api_2"
-          request: { method: "GET", path: "/2" }
-          response: { status: 200, body: "b2" }
-    "#;
-    let res_multi: MockSource = serde_yaml::from_str(multi_yaml).expect("应该成功解析接口数组");
-    assert_eq!(res_multi.flatten().len(), 2);
+    // 测试 1：验证 JSON 解析
+    let single_json = r#"{
+        "name": "auth_v1",
+        "request": {
+            "method": "POST",
+            "path": "/api/v1/login"
+        },
+        "response": {
+            "status": 200,
+            "body": "inline_content"
+        }
+    }"#;
+    let res: MockRule = serde_json::from_str(single_json).expect("应该成功解析 JSON");
+    assert_eq!(res.name, "auth_v1");
 }
 
 #[test]
@@ -42,34 +32,39 @@ fn test_recursive_loading_logic() {
     let user_dir = root_path.join("v1/user");
     fs::create_dir_all(&user_dir).unwrap();
 
-    // 在深层目录创建单接口文件
-    let mut file1 = File::create(user_dir.join("get_profile.yaml")).unwrap();
+    // 在深层目录创建单接口 JSON 文件
+    let mut file1 = File::create(user_dir.join("get_profile.json")).unwrap();
     writeln!(
         file1,
-        r#"
-        name: "user_profile"
-        request:
-          method: "GET"
-          path: "/api/v1/user/profile"
-        response:
-          status: 200
-          body: "profile_data"
-    "#
+        r#"{{
+            "name": "user_profile",
+            "request": {{
+                "method": "GET",
+                "path": "/api/v1/user/profile"
+            }},
+            "response": {{
+                "status": 200,
+                "body": "profile_data"
+            }}
+        }}"#
     )
     .unwrap();
 
-    // 在根目录创建多接口文件
-    let mut file2 = File::create(root_path.join("system.yaml")).unwrap();
+    // 在根目录创建另一个 JSON 文件
+    let mut file2 = File::create(root_path.join("health.json")).unwrap();
     writeln!(
         file2,
-        r#"
-        - name: "sys_health"
-          request: {{ method: "GET", path: "/health" }}
-          response: {{ status: 200, body: "ok" }}
-        - name: "sys_version"
-          request: {{ method: "GET", path: "/version" }}
-          response: {{ status: 200, body: "1.0.0" }}
-    "#
+        r#"{{
+            "name": "sys_health",
+            "request": {{
+                "method": "GET",
+                "path": "/health"
+            }},
+            "response": {{
+                "status": 200,
+                "body": "ok"
+            }}
+        }}"#
     )
     .unwrap();
 
@@ -80,11 +75,10 @@ fn test_recursive_loading_logic() {
     // 1. 检查 Key 是否根据路径首段正确提取
     assert!(index.contains_key("api"), "索引应包含 'api' 键");
     assert!(index.contains_key("health"), "索引应包含 'health' 键");
-    assert!(index.contains_key("version"), "索引应包含 'version' 键");
 
     // 2. 检查规则总数
     let total_rules: usize = index.values().map(|v| v.len()).sum();
-    assert_eq!(total_rules, 3, "总规则数应为 3");
+    assert_eq!(total_rules, 2, "总规则数应为 2");
 
     // 3. 检查深层文件是否被正确读取
     let api_rules = &index["api"];