feat(chat): add chat runtime and MCP integration

[SonyLeo]

背景

本 PR 在 Chat UI 包的基础上补充 Chat Runtime，实现模型请求、响应处理、MCP 工具调用以及 Kit Runtime 适配能力。

本 PR 基于 #411 合入

关联关系

robot/develop
└── PR1: feat/chat-pr1-ui-runtime-boundary
    └── PR2: feat/chat-pr2-runtime

PR1 负责 Chat 包、UI 组件和构建边界；本 PR 仅补充 Runtime 实现。

变更内容

Runtime 入口与公共导出

新增并导出：

• useLocalChatRuntime
• useKitChatRuntime
• Chat Runtime 相关类型
• Provider 配置与模型类型
• MCP Server 配置类型
• Provider Model Runtime、Request Plugin、Response Provider
• Provider 模型预设解析能力

Local Runtime

新增本地 Chat Runtime，支持：

• 本地模型请求生命周期管理
• 请求状态与响应状态同步
• 会话运行配置处理
• 请求取消与错误处理
• MCP Adapter 注入
• Runtime Action 执行

Kit Runtime

新增基于 @opentiny/tiny-robot-kit 的 Chat Runtime 适配：

• 将 Kit 的请求能力适配为 Chat Runtime 协议
• 同步 Kit 的消息、请求和处理状态
• 支持暂停、继续、终止等运行时操作
• 将 Kit 的响应事件转换为 Chat 可消费的数据结构

Provider Runtime

新增 Provider 请求处理链：

• Provider 模型配置解析
• 模型能力和预设配置解析
• 请求参数组装
• 请求插件
• 响应 Provider
• 流式响应处理
• 请求错误和完成状态处理

MCP Runtime

新增 MCP 能力：

• 默认 MCP Adapter
• MCP Server 配置类型
• MCP Server 连接与工具获取
• MCP 工具调用
• 工具调用结果处理
• MCP 工具状态同步

运行配置

新增 Chat Runtime 默认配置和运行配置解析：

• 默认请求配置
• Provider 配置
• MCP 配置
• Reasoning 配置
• Runtime Context 注入
• Chat Run Config 管理

用于同步 Kit Runtime 的暂停状态。

文件范围

本 PR 相对 PR1 变更：

• 16 个源码文件
• 新增约 1,350 行代码
• 主要集中在 packages/chat/src/runtime
• 修改 packages/chat/src/index.ts
• 修改 packages/chat/src/types/base.ts

构建与验证

已验证：

pnpm --filter @opentiny/tiny-robot-chat type-check
pnpm --filter @opentiny/tiny-robot-chat build
pnpm build

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📥 Commits

Reviewing files that changed from the base of the PR and between ed873bb and 2350a55.

⛔ Files ignored due to path filters (1)

• packages/chat/src/assets/modelcontextprotocol.png is excluded by !**/*.png

📒 Files selected for processing (50)

• package.json
• packages/chat/package.json
• packages/chat/src/Chat.vue
• packages/chat/src/ChatUI.vue
• packages/chat/src/composables/useChatAsideState.ts
• packages/chat/src/composables/useChatDraft.ts
• packages/chat/src/composables/useChatHistoryItems.ts
• packages/chat/src/composables/useChatRuntimeAdapter.ts
• packages/chat/src/index.ts
• packages/chat/src/runtime/defaults.ts
• packages/chat/src/runtime/mcp/createDefaultMcpAdapter.ts
• packages/chat/src/runtime/mcp/types.ts
• packages/chat/src/runtime/plugins/mcpToolPlugin.ts
• packages/chat/src/runtime/plugins/runConfigContextPlugin.ts
• packages/chat/src/runtime/provider/index.ts
• packages/chat/src/runtime/provider/modelRuntime.ts
• packages/chat/src/runtime/provider/presets.ts
• packages/chat/src/runtime/provider/requestPlugin.ts
• packages/chat/src/runtime/provider/responseProvider.ts
• packages/chat/src/runtime/provider/types.ts
• packages/chat/src/runtime/runConfig.ts
• packages/chat/src/runtime/useKitChatRuntime.ts
• packages/chat/src/runtime/useLocalChatRuntime.ts
• packages/chat/src/types/base.ts
• packages/chat/src/types/commands.ts
• packages/chat/src/types/index.ts
• packages/chat/src/types/runtime.ts
• packages/chat/src/types/ui/data.ts
• packages/chat/src/types/ui/events.ts
• packages/chat/src/types/ui/index.ts
• packages/chat/src/types/ui/options.ts
• packages/chat/src/types/ui/slots.ts
• packages/chat/src/ui/composer/ChatComposer.vue
• packages/chat/src/ui/composer/ChatComposerHost.vue
• packages/chat/src/ui/composer/MCPSelector.vue
• packages/chat/src/ui/composer/ModelFeatures.vue
• packages/chat/src/ui/composer/ModelSelector.vue
• packages/chat/src/ui/defaults.ts
• packages/chat/src/ui/formatRequestError.ts
• packages/chat/src/ui/layout/ChatHeader.vue
• packages/chat/src/ui/layout/ChatLeftAside.vue
• packages/chat/src/ui/layout/ChatMcpPanel.vue
• packages/chat/src/ui/layout/ChatRightAside.vue
• packages/chat/src/ui/messages/ChatMessages.vue
• packages/chat/src/ui/messages/ScrollToBottom.vue
• packages/chat/src/ui/resolveData.ts
• packages/chat/src/ui/resolveOptions.ts
• packages/chat/src/vite-env.d.ts
• packages/chat/tsconfig.json
• packages/chat/vite.config.ts

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