feat: 新增备课模块并修复全模块 P0/P1/P2 缺陷

主要变更:

- 新增 lesson-preparation 模块: 备课编辑器、节点编辑、AI 建议、知识点选择、版本历史、作业发布

- 新增 shared 通用组件: charts/question-bank-filters/schedule-list/ui (chip-nav/filter-bar/page-header/stat-card/stat-item)

- 新增 student/admin 端 loading.tsx 与 error.tsx, 优化加载与错误态体验

- 新增 teacher/lesson-plans 页面 (列表/新建/编辑)

- 新增 drizzle 迁移 0002_tiny_lionheart 及 snapshot

- 新增 textbooks/schema.ts 与 exams/utils/normalize-structure.ts

- 修复 Tiptap v3 SSR hydration 崩溃 (rich-text-block immediatelyRender: false)

- 重构多模块 data-access/actions/组件, 修复权限校验与类型规范

- 同步架构文档 004/005 反映新增模块、导出、依赖关系

- 归档 bugs/* 测试报告与 e2e 测试脚本 (admin/parent/student/teacher web_test)

bugs/test_node_editor.py

@@ -0,0 +1,103 @@
+"""测试节点图编辑器"""
+from playwright.sync_api import sync_playwright
+
+with sync_playwright() as p:
+    browser = p.chromium.launch(headless=True)
+    context = browser.new_context(viewport={"width": 1400, "height": 900})
+    page = context.new_page()
+
+    errors = []
+    console_msgs = []
+    page.on("console", lambda msg: console_msgs.append(f"[{msg.type}] {msg.text}"))
+    page.on("pageerror", lambda err: errors.append(str(err)))
+
+    # 登录
+    print("=== 登录 ===")
+    page.goto("http://localhost:3000/login", wait_until="networkidle", timeout=30000)
+    page.locator("input[name='email']").fill("t_chinese_1@xiaoxue.edu.cn")
+    page.locator("input[name='password']").fill("123456")
+    page.get_by_role("button", name="Sign In", exact=False).click()
+    try:
+        page.wait_for_url("**/dashboard**", timeout=15000)
+    except Exception:
+        page.wait_for_load_state("networkidle", timeout=10000)
+    print(f"登录后: {page.url}")
+
+    # 新建课案
+    print("\n=== 新建课案 ===")
+    page.goto("http://localhost:3000/teacher/lesson-plans/new", wait_until="networkidle", timeout=30000)
+    page.locator("input[placeholder*='秋天']").fill("节点图测试")
+    page.locator("button[type='button']:has-text('常规课')").click()
+    page.wait_for_timeout(500)
+    page.get_by_role("button", name="创建课案", exact=False).click()
+    try:
+        page.wait_for_url("**/edit**", timeout=15000)
+    except Exception:
+        pass
+    print(f"编辑页: {page.url}")
+
+    if "/edit" in page.url:
+        print("进入编辑页!")
+        page.wait_for_timeout(5000)  # 等待 React Flow 渲染
+        page.screenshot(path="e:/Desktop/CICD/bugs/v3_node_editor.png", full_page=True)
+
+        # 检查 React Flow 画布是否存在
+        rf_canvas = page.locator(".react-flow")
+        print(f"React Flow 画布数量: {rf_canvas.count()}")
+
+        # 检查节点数量
+        nodes = page.locator(".react-flow__node")
+        print(f"节点数量: {nodes.count()}")
+
+        # 检查边数量
+        edges = page.locator(".react-flow__edge")
+        print(f"边数量: {edges.count()}")
+
+        # 检查控件
+        controls = page.locator(".react-flow__controls")
+        print(f"控件数量: {controls.count()}")
+
+        # 检查 minimap
+        minimap = page.locator(".react-flow__minimap")
+        print(f"小地图数量: {minimap.count()}")
+
+        # 测试添加节点
+        print("\n=== 测试添加节点 ===")
+        add_btn = page.get_by_role("button", name="添加节点", exact=False)
+        if add_btn.count() > 0:
+            add_btn.click()
+            page.wait_for_timeout(500)
+            # 点击第一个节点类型
+            menu_items = page.locator("button:has-text('教学目标')")
+            if menu_items.count() > 0:
+                menu_items.first.click()
+                page.wait_for_timeout(1000)
+                nodes_after = page.locator(".react-flow__node")
+                print(f"添加后节点数量: {nodes_after.count()}")
+                page.screenshot(path="e:/Desktop/CICD/bugs/v3_after_add.png", full_page=True)
+
+        # 测试点击节点选中
+        print("\n=== 测试节点选中 ===")
+        if nodes.count() > 0:
+            nodes.first.click()
+            page.wait_for_timeout(1000)
+            page.screenshot(path="e:/Desktop/CICD/bugs/v3_node_selected.png", full_page=True)
+            # 检查侧边面板是否出现
+            panel = page.locator("text=点击节点编辑内容")
+            panel_selected = page.locator("input[value]")
+            print(f"侧边面板可见: {panel.count() > 0 or panel_selected.count() > 0}")
+
+    # 错误输出
+    print("\n=== 页面错误 ===")
+    for e in errors:
+        print(f"  ERROR: {e[:200]}")
+    if not errors:
+        print("  无")
+
+    print("\n=== 控制台 error/warning ===")
+    for m in console_msgs:
+        if m.startswith("[error]") or m.startswith("[warning]"):
+            print(f"  {m[:200]}")
+
+    browser.close()
+    print("\n完成")