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>

Cargo.toml

@@ -3,6 +3,10 @@ name = "mock_server"
 version = "0.1.0"
 edition = "2024"
 
+[features]
+default = []
+mcp = ["rmcp", "schemars"]
+
 [dependencies]
 # 核心 Web 框架
 axum = "0.8.8"
@@ -12,9 +16,8 @@ tokio={version = "1.48.0",features = ["full"]}
 tokio-util = {version = "0.7.17",features = ["io"]}
 futures-util = "0.3.31"
 
-# 序列化与 YAML 解析
+# 序列化
 serde = {version = "1.0.228",features = ["derive"]}
-serde_yaml = "0.9.34+deprecated"
 serde_json = "1.0.147"
 
 # 物理目录递归扫描工具
@@ -23,13 +26,13 @@ walkdir = "2.5.0"
 tracing="0.1.44"
 tracing-subscriber = "0.3.22"
 
-# 性能优化：快速哈希（可选，用于路由匹配）
-#dashmap = "7.0.0-rc2"
 # 热加载支持（扩展功能）
 notify = "8.2.0"
 notify-debouncer-mini = "0.6.0"
-# 路径处理
-#pathdiff = "0.2.3"
+
+# MCP Server 支持（可选）
+rmcp = { version = "0.1", features = ["server"], optional = true }
+schemars = { version = "0.8", optional = true }
 
 [dev-dependencies]
 tempfile = "3.24.0"