feat: 自动化增加起止时间 + 本轮每次测试明细表

- 显示自动化开始/结束时间
- 测试信息区新增本轮测试明细表（序号、状态、关键字段）
- 方便对照平均值是否计算正确

edc-web/app/models.py

@@ -251,6 +251,27 @@ def get_automation_averages(dnt_id: int, since: str = None) -> dict:
     return {}
 
 
+def get_automation_records(dnt_id: int, since: str) -> list[dict]:
+    """获取本轮自动化测试的所有记录（含 serialnet 状态）"""
+    conn = get_conn()
+    try:
+        with conn.cursor() as cur:
+            cur.execute(
+                "SELECT t.*, sn.state as sn_state "
+                "FROM tb_state_tst t "
+                "LEFT JOIN tb_serialnet sn ON sn.dnt_id = t.dnt_id "
+                "  AND sn.state IN (2,3) "
+                "  AND sn.update_time >= t.create_time "
+                "  AND sn.update_time < DATE_ADD(t.create_time, INTERVAL 1 SECOND) "
+                "WHERE t.dnt_id=%s AND t.create_time >= %s "
+                "ORDER BY t.id ASC",
+                (dnt_id, since),
+            )
+            return cur.fetchall()
+    finally:
+        conn.close()
+
+
 # ─── 用户管理 ──────────────────────────────────────────────────────
 
 def get_user_by_username(username: str) -> dict | None: