Initial commit: TaskPool React panel

- React frontend with route-level code splitting
- Backend rebranded from Baihu to TaskPool
- DB brand migration script and local compatibility

docs/guide/api.md

@@ -0,0 +1,51 @@
+---
+layout: false
+---
+
+<script setup>
+import { ApiReference } from '@scalar/api-reference'
+import '@scalar/api-reference/style.css'
+</script>
+
+<div class="scalar-container">
+  <ClientOnly>
+    <ApiReference 
+      :configuration="{ 
+        spec: { 
+          url: '/taskpool/swagger.json' 
+        },
+        theme: 'alternate',
+        showSidebar: true,
+        servers: [
+          { 
+            url: '{protocol}://{host}:{port}/open2api/v1',
+            description: '可编辑的服务器地址',
+            variables: {
+              protocol: { default: 'http', enum: ['http', 'https'] },
+              host: { default: 'localhost' },
+              port: { default: '8052' }
+            }
+          }
+        ]
+      }" 
+    />
+  </ClientOnly>
+</div>
+
+<style>
+:root, body, #app {
+  margin: 0;
+  padding: 0;
+  height: 100%;
+}
+
+.scalar-container {
+  height: 100vh;
+  width: 100vw;
+}
+
+/* 覆盖 VitePress 可能存在的样式干扰 */
+.scalar-container :deep(.scalar-api-reference) {
+  min-height: 100vh;
+}
+</style>