feat: 增加项目管理功能

引入 SQLite 数据库（Drizzle ORM + bun:sqlite），实现项目 CRUD 与归档/恢复/删除
生命周期管理，新增项目管理前端页面，migration 嵌入单文件构建产物保持部署体验。

- src/server/db: schema、connection、migration 执行器、项目数据访问层
- src/server/routes/projects: 7 个 API 端点（列表/创建/详情/更新/归档/恢复/删除）
- src/web: 项目管理页面（TDesign Table/Tabs/Dialog/Form），TanStack Query hooks
- scripts: 构建时嵌入 migration SQL，开发期独立 generate-migrations-data 脚本
- tests: 60 个后端测试 + 27 个前端测试，覆盖 DB/migration/API/路由/页面
- docs: 更新架构、后端、发布、配置、部署、使用文档

tests/web/App.test.tsx

@@ -41,6 +41,7 @@ describe("App", () => {
     renderWithProviders(createElement(App));
 
     expect(screen.getAllByText("仪表盘").length).toBeGreaterThan(0);
+    expect(screen.getAllByText("项目管理").length).toBeGreaterThan(0);
     expect(screen.getAllByText("用户管理").length).toBeGreaterThan(0);
     expect(screen.getAllByText("系统设置").length).toBeGreaterThan(0);
   });

tests/web/components/Sidebar/index.test.tsx

@@ -11,6 +11,7 @@ describe("Sidebar", () => {
     renderWithProviders(createElement(Sidebar, { collapsed: false, onToggleCollapsed: () => {} }));
 
     expect(screen.getByText("仪表盘")).not.toBeNull();
+    expect(screen.getByText("项目管理")).not.toBeNull();
     expect(screen.getByText("用户管理")).not.toBeNull();
     expect(screen.getByText("系统设置")).not.toBeNull();
   });
@@ -19,10 +20,21 @@ describe("Sidebar", () => {
     renderWithProviders(createElement(Sidebar, { collapsed: true, onToggleCollapsed: () => {} }));
 
     expect(screen.getByText("仪表盘")).not.toBeNull();
+    expect(screen.getByText("项目管理")).not.toBeNull();
     expect(screen.getByText("用户管理")).not.toBeNull();
     expect(screen.getByText("系统设置")).not.toBeNull();
   });
 
+  test("项目管理菜单项可导航到 /projects", () => {
+    renderWithProviders(createElement(Sidebar, { collapsed: false, onToggleCollapsed: () => {} }), {
+      initialRoute: "/projects",
+    });
+
+    const activeItem = document.querySelector(".t-is-active");
+    expect(activeItem).not.toBeNull();
+    expect(activeItem?.textContent).toContain("项目管理");
+  });
+
   test("高亮当前路由对应的菜单项", () => {
     renderWithProviders(createElement(Sidebar, { collapsed: false, onToggleCollapsed: () => {} }), {
       initialRoute: "/users",

tests/web/routes/projects.test.tsx

@@ -0,0 +1,41 @@
+import { screen, waitFor } from "@testing-library/react";
+import { describe, expect, test } from "bun:test";
+import { createElement } from "react";
+
+import { ProjectsPage } from "../../../src/web/pages/projects";
+import { renderWithProviders } from "../test-utils";
+
+describe("ProjectsPage", () => {
+  test("渲染 Tab、搜索框、新建按钮和表格", async () => {
+    renderWithProviders(createElement(ProjectsPage));
+
+    // Tabs, search, create button always visible
+    expect(screen.getByText("进行中")).not.toBeNull();
+    expect(screen.getByText("已归档")).not.toBeNull();
+    expect(screen.getByText("搜索")).not.toBeNull();
+    expect(screen.getByText("新建项目")).not.toBeNull();
+
+    // Table renders (shows loading or empty state)
+    await waitFor(
+      () => {
+        const body = document.body.textContent ?? "";
+        expect(body).toContain("项目名称");
+      },
+      { timeout: 10000 },
+    );
+  });
+
+  test("新建按钮点击打开弹窗", async () => {
+    renderWithProviders(createElement(ProjectsPage));
+
+    const createBtn = screen.getByText("新建项目");
+    createBtn.click();
+
+    await waitFor(
+      () => {
+        expect(screen.getByText("确定")).not.toBeNull();
+      },
+      { timeout: 5000 },
+    );
+  });
+});