feat: 将 demo 项目转化为 HTTP 拨测监控工具

新增 YAML 配置解析（Bun 内置 YAML）、SQLite 数据存储（bun:sqlite）、按 interval 分组并发拨测引擎、REST API（/api/summary、/api/targets、/api/targets/:id/history、/api/targets/:id/trend）、React 前端 Dashboard（统计卡片、目标表格、可展开详情面板、recharts 趋势图）。CLI 简化为仅接受配置文件路径。移除 /api/demo 路由和相关 demo 代码。保留 /health、静态资源服务和 SPA fallback。

src/server/server.ts

@@ -1,21 +1,25 @@
 import type { RuntimeMode } from "../shared/api";
-import { createFetchHandler, type StaticAssets } from "./app";
-import { readRuntimeConfig, type RuntimeConfig } from "./config";
+import type { StaticAssets } from "./app";
+import type { ProbeStore } from "./checker/store";
+import { createFetchHandler } from "./app";
+import type { RuntimeConfig } from "./config";
 
 export interface StartServerOptions {
-  config?: RuntimeConfig;
+  config: RuntimeConfig;
   mode: RuntimeMode;
   staticAssets?: StaticAssets;
+  store?: ProbeStore;
 }
 
 export function startServer(options: StartServerOptions) {
-  const config = options.config ?? readRuntimeConfig();
+  const { config, mode, staticAssets, store } = options;
   const server = Bun.serve({
     hostname: config.host,
     port: config.port,
     fetch: createFetchHandler({
-      mode: options.mode,
-      staticAssets: options.staticAssets,
+      mode,
+      staticAssets,
+      store,
     }),
   });