fix: 发布时间从详情页内容提取，避免pipeline二次请求失败

spiders/base.py

@@ -213,6 +213,32 @@ class BaseSpider(ABC):
         result["项目名称"] = project_name
         return result
 
+    # ---------- 发布时间提取 ----------
+
+    @staticmethod
+    def _extract_publish_time(soup, page_text: str) -> str:
+        """从详情页中提取发布时间（含时分秒）"""
+        patterns = [
+            r'信息发布时间[:：]\s*([\d-]+\s[\d:]+)',
+            r'发布时间[:：]\s*([\d-]+\s[\d:]+)',
+            r'发布日期[:：]\s*([\d-]+\s[\d:]+)',
+            r'发布时间[:：]\s*([\d-]+)',
+            r'发布日期[:：]\s*([\d-]+)',
+        ]
+        for pattern in patterns:
+            match = re.search(pattern, page_text)
+            if match:
+                return match.group(1).strip()
+
+        time_tags = soup.find_all(['time', 'span', 'div'], class_=re.compile(r'time|date|publish', re.I))
+        for tag in time_tags:
+            text = tag.get_text(strip=True)
+            match = re.search(r'([\d-]+\s[\d:]+)', text)
+            if match:
+                return match.group(1).strip()
+
+        return ""
+
     # ---------- 去重 ----------
 
     def is_duplicate(self, url: str) -> bool: