feat: 添加MCP调试插件并优化流式超时处理

refactor(relay): 将Provider Key管理路由移至model_config模块
fix(saas): 修复demo_keys与provider_keys的匹配逻辑
perf(runtime): 将流式响应超时从60秒延长至180秒以适配思考型模型
docs: 新增模块化审计和上线前功能测试方案文档
chore: 添加tauri-plugin-mcp依赖及相关配置

desktop/src-tauri/Cargo.toml

@@ -37,6 +37,9 @@ zclaw-protocols = { workspace = true }
 tauri = { version = "2", features = [] }
 tauri-plugin-opener = "2"
 
+# MCP debug plugin (dev-only, allows AI agents to interact with the app)
+tauri-plugin-mcp = { git = "https://github.com/P3GLEG/tauri-plugin-mcp" }
+
 # Async runtime
 tokio = { workspace = true }
 futures = { workspace = true }