feat: 工具层及 mcp 大重构 (#252)

* feat: 第一版大重构

* fix: 修复类型问题

* chore: 更新版本到 1.3.2

* Add brave as alternative WebSearchTool

* fix: 修正顺序

* fix: 修复对穷鬼模式的 auto dream 和 session memory 越过

* feat: 穷鬼模式去除 session-summary

* feat: 创建 builtin-tools 包，搬运所有工具实现

将 src/tools/ 下的全部 60 个工具目录迁移至 packages/builtin-tools/src/tools/，
内部导入路径已更新为 src/ alias 模式。

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

* refactor: 更新 src/ 中所有工具引用至 builtin-tools 包，删除 src/tools/

- src/tools.ts 及 178 个 src/ 文件的 import 路径从 ./tools/ 改为 builtin-tools/tools/
- 删除 src/tools/ 整个目录（已迁移至 packages/builtin-tools/）

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

* chore: 添加 builtin-tools 路径别名至 tsconfig，更新 bun.lock

- tsconfig.json 新增 builtin-tools/* 和 builtin-tools 路径映射
- 新增 packages/builtin-tools/src 至 include

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

* refactor: 为 builtin-tools、mcp-client、agent-tools 添加 @claude-code-best 作用域前缀

所有包名及 import 路径统一添加 @claude-code-best/ 前缀：
- builtin-tools → @claude-code-best/builtin-tools
- mcp-client → @claude-code-best/mcp-client
- agent-tools → @claude-code-best/agent-tools

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

* fix: 修复 node 环境没有 bun 的问题

---------

Co-authored-by: Eric-Guo <eric.guocz@gmail.com>
Co-authored-by: Claude Opus 4.6 <noreply@anthropic.com>

packages/builtin-tools/src/tools/PushNotificationTool/PushNotificationTool.ts

@@ -0,0 +1,87 @@
+import { z } from 'zod/v4'
+import type { ToolResultBlockParam } from 'src/Tool.js'
+import { buildTool } from 'src/Tool.js'
+import { lazySchema } from 'src/utils/lazySchema.js'
+
+const PUSH_NOTIFICATION_TOOL_NAME = 'PushNotification'
+
+const inputSchema = lazySchema(() =>
+  z.strictObject({
+    title: z
+      .string()
+      .describe('Title of the push notification.'),
+    body: z
+      .string()
+      .describe('Body text of the push notification.'),
+    priority: z
+      .enum(['normal', 'high'])
+      .optional()
+      .describe('Notification priority. Use "high" for blockers or permission prompts.'),
+  }),
+)
+type InputSchema = ReturnType<typeof inputSchema>
+type PushInput = z.infer<InputSchema>
+
+type PushOutput = { sent: boolean }
+
+export const PushNotificationTool = buildTool({
+  name: PUSH_NOTIFICATION_TOOL_NAME,
+  searchHint: 'push notification mobile alert notify user',
+  maxResultSizeChars: 1_000,
+  strict: true,
+
+  get inputSchema(): InputSchema {
+    return inputSchema()
+  },
+
+  async description() {
+    return 'Send a push notification to the user\'s mobile device'
+  },
+  async prompt() {
+    return `Send a push notification to the user's mobile device via Remote Control.
+
+Use this when:
+- A long-running task completes and the user may not be watching
+- A permission prompt is waiting and you need user input
+- Something urgent requires the user's attention
+
+Requires Remote Control to be configured. Respects user notification settings (taskCompleteNotifEnabled, inputNeededNotifEnabled, agentPushNotifEnabled).`
+  },
+
+  isConcurrencySafe() {
+    return true
+  },
+  isReadOnly() {
+    return true
+  },
+
+  userFacingName() {
+    return 'Notify'
+  },
+
+  renderToolUseMessage(input: Partial<PushInput>) {
+    return `Push: ${input.title ?? '...'}`
+  },
+
+  mapToolResultToToolResultBlockParam(
+    content: PushOutput,
+    toolUseID: string,
+  ): ToolResultBlockParam {
+    return {
+      tool_use_id: toolUseID,
+      type: 'tool_result',
+      content: content.sent ? 'Notification sent.' : 'Failed to send notification.',
+    }
+  },
+
+  async call(_input: PushInput) {
+    // Push delivery is handled by the Remote Control / KAIROS transport layer.
+    // Without the KAIROS runtime, this tool is not available.
+    return {
+      data: {
+        sent: false,
+        error: 'PushNotification requires the KAIROS transport layer.',
+      },
+    }
+  },
+})