test: update and add E2E, integration, visual, and webapp tests

- Update E2E tests: announcements, auth, auth-business-flow, full-route-regression, grades, navigation, smoke-auth, teacher-web-test

- Update integration tests: api-ai-chat, api-onboarding-complete, api-onboarding-status, proxy-guard, integration setup

- Update visual regression tests: admin-dashboard, homepage, student-dashboard, teacher-dashboard, visual config, helpers

- Update webapp tests: admin, parent, student full tests and debug scripts

- Add new webapp tests: announcements_messages, settings_profile, debug scripts

- Add webtest directory with test plans, screenshots, and diagnostic scripts

webtest/diag_login.py

@@ -0,0 +1,90 @@
+"""诊断 student/parent 登录问题"""
+from playwright.sync_api import sync_playwright
+
+BASE_URL = "http://localhost:3000"
+
+ACCOUNTS = [
+    ("student", "student_g1c1_1@xiaoxue.edu.cn", "123456", "/student/dashboard"),
+    ("parent", "parent_g1c1_1@xiaoxue.edu.cn", "123456", "/parent/dashboard"),
+]
+
+with sync_playwright() as p:
+    browser = p.chromium.launch(headless=True)
+
+    for role, email, password, expected_path in ACCOUNTS:
+        print(f"\n=== 测试 {role} 登录 ===")
+        context = browser.new_context()
+        page = context.new_page()
+
+        # 监听控制台
+        console_msgs = []
+        page.on("console", lambda msg: console_msgs.append(f"[{msg.type}] {msg.text}") if msg.type == "error" else None)
+
+        # 监听响应
+        responses = []
+        def on_response(resp):
+            if resp.status >= 400:
+                responses.append(f"{resp.status} {resp.url}")
+        page.on("response", on_response)
+
+        try:
+            page.goto(f"{BASE_URL}/login", timeout=30000)
+            page.wait_for_load_state("networkidle", timeout=15000)
+            print(f"  登录页 URL: {page.url}")
+
+            # 填写表单
+            email_input = page.locator('input[name="email"]')
+            if email_input.count() == 0:
+                email_input = page.locator('input[type="email"]')
+            email_input.fill(email)
+
+            password_input = page.locator('input[name="password"]')
+            if password_input.count() == 0:
+                password_input = page.locator('input[type="password"]')
+            password_input.fill(password)
+
+            # 点击登录
+            login_btn = page.locator('button[type="submit"]')
+            if login_btn.count() == 0:
+                login_btn = page.get_by_role("button", name="Sign In with Email")
+            login_btn.click()
+
+            page.wait_for_timeout(5000)
+            page.wait_for_load_state("networkidle", timeout=15000)
+
+            print(f"  登录后 URL: {page.url}")
+            print(f"  预期路径: {expected_path}")
+
+            # 检查页面内容
+            body_text = page.locator("body").text_content() or ""
+            if "onboarding" in page.url.lower():
+                print(f"  ⚠️ 被重定向到 onboarding 页面")
+            elif "/login" in page.url:
+                print(f"  ❌ 仍在登录页")
+                # 查找错误消息
+                error_msg = page.locator('[class*="error"], [class*="alert"], [role="alert"]').text_content()
+                if error_msg:
+                    print(f"  错误消息: {error_msg[:200]}")
+            elif expected_path in page.url:
+                print(f"  ✅ 登录成功")
+            else:
+                print(f"  ⚠️ 跳转到其他页面")
+
+            # 打印控制台错误
+            if console_msgs:
+                print(f"  控制台错误 ({len(console_msgs)} 条):")
+                for msg in console_msgs[:5]:
+                    print(f"    {msg[:200]}")
+
+            # 打印错误响应
+            if responses:
+                print(f"  错误响应 ({len(responses)} 条):")
+                for r in responses[:5]:
+                    print(f"    {r[:200]}")
+
+        except Exception as e:
+            print(f"  ❌ 异常: {e}")
+        finally:
+            context.close()
+
+    browser.close()