初始化项目基础结构

添加了完整的前后端开发环境配置，包括：
- 创建 .gitignore 文件忽略本地生成目录和环境文件
- 添加详细的 README.md 开发指南文档
- 配置 backend 目录结构和 FastAPI 应用基础框架
- 实现应用配置管理、健康检查和状态接口
- 设置 uv 依赖管理和虚拟环境配置
- 完成 CORS 中间件配置支持前端开发联调

frontend/src/style.css

@@ -0,0 +1,70 @@
+:root {
+  font-family: Inter, "PingFang SC", "Microsoft YaHei", system-ui, sans-serif;
+  color: #20211f;
+  background: #f4f1e9;
+  font-synthesis: none;
+  text-rendering: optimizeLegibility;
+  --ink: #20211f;
+  --muted: #77776f;
+  --paper: #fffdf7;
+  --line: #dedbd0;
+  --accent: #e76f3d;
+  --success: #307b59;
+}
+
+* { box-sizing: border-box; }
+body { margin: 0; min-width: 320px; min-height: 100vh; }
+button { font: inherit; }
+
+.app-shell { display: grid; grid-template-columns: 240px 1fr; min-height: 100vh; }
+.sidebar {
+  display: flex; flex-direction: column; padding: 28px 20px;
+  color: #f8f5ed; background: #20211f;
+}
+.brand { display: flex; align-items: center; gap: 12px; margin-bottom: 48px; font-weight: 700; }
+.brand-mark {
+  display: grid; place-items: center; width: 32px; height: 32px;
+  border-radius: 10px; color: #20211f; background: #f2c14e;
+}
+nav { display: grid; gap: 6px; }
+.nav-item {
+  padding: 11px 14px; border: 0; border-radius: 8px; text-align: left;
+  color: #bcbdb7; background: transparent;
+}
+.nav-item.active { color: white; background: #343632; }
+.nav-item:disabled { cursor: not-allowed; opacity: .55; }
+.sidebar-hint { margin-top: auto; color: #8f918a; font-size: 13px; }
+
+.workspace { padding: 64px clamp(28px, 6vw, 88px); }
+.workspace header { max-width: 720px; margin-bottom: 42px; }
+.eyebrow, .card-label { margin: 0 0 10px; color: var(--accent); font-size: 12px; font-weight: 800; letter-spacing: .14em; }
+h1 { margin: 0; font-family: Georgia, "Noto Serif SC", serif; font-size: clamp(42px, 7vw, 76px); line-height: 1; letter-spacing: -.045em; }
+.subtitle { max-width: 580px; margin: 20px 0 0; color: var(--muted); font-size: 17px; line-height: 1.7; }
+.cards { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 18px; max-width: 960px; }
+.card { min-height: 180px; padding: 28px; border: 1px solid var(--line); border-radius: 18px; background: var(--paper); box-shadow: 0 12px 40px rgb(46 43 36 / 6%); }
+.hero-card { grid-column: 1 / -1; display: grid; grid-template-columns: 1fr auto; gap: 22px; align-items: center; }
+.card h2 { margin: 0 0 12px; font-size: 21px; }
+.card p { color: var(--muted); line-height: 1.6; }
+.status-line { display: flex; align-items: center; gap: 12px; min-width: 250px; }
+.status-line p { margin: 3px 0 0; font-size: 13px; }
+.status-dot { width: 10px; height: 10px; border-radius: 50%; background: #aaa; box-shadow: 0 0 0 5px rgb(120 120 120 / 10%); }
+.status-line.success .status-dot { background: var(--success); box-shadow: 0 0 0 5px rgb(48 123 89 / 12%); }
+.status-line.error .status-dot { background: #b84737; box-shadow: 0 0 0 5px rgb(184 71 55 / 12%); }
+.primary-button {
+  justify-self: end; padding: 10px 16px; border: 0; border-radius: 9px;
+  color: white; background: var(--ink); cursor: pointer;
+}
+.primary-button:disabled { cursor: wait; opacity: .6; }
+
+@media (max-width: 720px) {
+  .app-shell { grid-template-columns: 1fr; }
+  .sidebar { min-height: auto; padding: 18px 20px; }
+  .brand { margin-bottom: 18px; }
+  nav { grid-template-columns: repeat(4, 1fr); }
+  .nav-item { padding: 9px 6px; text-align: center; font-size: 13px; }
+  .sidebar-hint { display: none; }
+  .workspace { padding-top: 42px; }
+  .cards { grid-template-columns: 1fr; }
+  .hero-card { display: grid; grid-column: auto; }
+  .primary-button { justify-self: start; }
+}