chore(test): 新增统一测试入口与端到端场景模拟脚本

- scripts/run-memind-tests.mjs：按改动文件自动匹配 test + verify 范围
  （quick/changed/guards/release/full 模式），配套 memind-test skill
- scripts/run-scenario-test.mjs + scenario-test-lib.mjs：真实登录 + 多轮
  聊天 + 页面生成 + 公网可访问性的端到端模拟，配套 memind-scenario-test
  skill 与首个场景 scenarios/suzhou-page.json
- package.json 新增 test:memind / test:scenario 脚本别名

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

scenarios/_template.json

@@ -0,0 +1,40 @@
+{
+  "id": "your-scenario-id",
+  "name": "场景名称",
+  "description": "一句话说明这个场景测什么",
+  "account": {
+    "username": "john",
+    "password": "888888"
+  },
+  "steps": [
+    {
+      "action": "login",
+      "label": "登录"
+    },
+    {
+      "action": "chat",
+      "label": "第一步对话",
+      "message": "hi",
+      "expect": {
+        "assistantMinChars": 1,
+        "timeoutMs": 120000
+      }
+    },
+    {
+      "action": "chat",
+      "label": "第二步对话（可带页面断言）",
+      "message": "你的测试消息",
+      "expect": {
+        "assistantMinChars": 20,
+        "timeoutMs": 300000,
+        "replyKeywords": ["关键词"],
+        "page": {
+          "keywords": ["页面里应出现的词"],
+          "requirePublicLink": true,
+          "requireHttp200": true,
+          "requireMindspaceCover": false
+        }
+      }
+    }
+  ]
+}

scenarios/suzhou-page.json

@@ -0,0 +1,39 @@
+{
+  "id": "suzhou-page",
+  "name": "苏州攻略一日游页面",
+  "description": "登录 john → 打招呼 → 请求生成苏州 1 日攻略页面 → 验证回复与公网可访问",
+  "account": {
+    "username": "john",
+    "password": "888888"
+  },
+  "steps": [
+    {
+      "action": "login",
+      "label": "登录 john 账户"
+    },
+    {
+      "action": "chat",
+      "label": "发送 hi 并等待回复",
+      "message": "hi",
+      "expect": {
+        "assistantMinChars": 1,
+        "timeoutMs": 120000
+      }
+    },
+    {
+      "action": "chat",
+      "label": "请求苏州攻略页面并验证",
+      "message": "帮我看看苏州攻略，1日攻略，做一个页面",
+      "expect": {
+        "assistantMinChars": 20,
+        "timeoutMs": 300000,
+        "replyKeywords": ["苏州"],
+        "page": {
+          "keywords": ["苏州"],
+          "requirePublicLink": true,
+          "requireHttp200": true
+        }
+      }
+    }
+  ]
+}