feat: 接入法制日报机构并新增 15 应用 Playwright 回归测试

- 新增法制日报机构种子数据（机构/用户/分类/15应用/知识库），登录页默认账号预填
- 引入 Playwright e2e：登录复用 storageState，覆盖对话/补全/工作流/智能体四类交互
- 配置测试脚本与产物 gitignore

Co-authored-by: Cursor <cursor@cursor.com>

server/migrations/seed_fazhiribao_users.sql

@@ -0,0 +1,39 @@
+-- 法制日报（法制网）机构用户种子数据
+-- 密码统一为 admin123
+-- 可重复执行（ON CONFLICT DO NOTHING）
+
+DO $$
+DECLARE
+  pwd_hash TEXT;
+  fazhi_org UUID := 'a0000000-0000-0000-0000-00000000000a';
+BEGIN
+  -- 获取已有用户的密码hash（admin123）
+  SELECT password_hash INTO pwd_hash FROM users WHERE email = 'admin@govai.gov.cn';
+
+  -- 法制日报机构管理员（排序第一位，作为登录页默认账号）
+  INSERT INTO organizations (id, name, slug, short_name, description, sort_order, is_active) VALUES
+    (fazhi_org, '法制日报', 'fazhiribao', '法制网',
+     '法治日报社官方平台，提供法治资讯、政策解读、法律服务与智能应用',
+     1, true)
+  ON CONFLICT (id) DO NOTHING;
+
+  -- 显式重排所有机构，确保法制日报稳定排在第一位、其余机构顺延（幂等）
+  UPDATE organizations SET sort_order = 1  WHERE slug = 'fazhiribao';
+  UPDATE organizations SET sort_order = 2  WHERE slug = 'keji';
+  UPDATE organizations SET sort_order = 3  WHERE slug = 'gongan';
+  UPDATE organizations SET sort_order = 4  WHERE slug = 'fagai';
+  UPDATE organizations SET sort_order = 5  WHERE slug = 'jiaoyu';
+  UPDATE organizations SET sort_order = 6  WHERE slug = 'renshe';
+  UPDATE organizations SET sort_order = 7  WHERE slug = 'caizheng';
+  UPDATE organizations SET sort_order = 8  WHERE slug = 'zhujian';
+  UPDATE organizations SET sort_order = 9  WHERE slug = 'shijianju';
+  UPDATE organizations SET sort_order = 10 WHERE slug = 'lvsuo';
+
+  -- 法制日报机构用户
+  INSERT INTO users (id, name, email, password_hash, role, status, org_id) VALUES
+    (gen_random_uuid(), '法制日报管理员', 'fazhiribao@govai.gov.cn', pwd_hash, 'admin', 'active', fazhi_org),
+    (gen_random_uuid(), '法制网编辑', 'fazhibian@govai.gov.cn', pwd_hash, 'creator', 'active', fazhi_org),
+    (gen_random_uuid(), '法制日报记者', 'fazhijizhe@govai.gov.cn', pwd_hash, 'user', 'active', fazhi_org)
+  ON CONFLICT (email) DO NOTHING;
+
+END $$;