修复YAML过滤器正则：允许gitcode:等域名格式

- 修正正则：从'^(github|gitee|gitcode|git)\.ypshidifu'改为'^(github|gitee|gitcode|git)[:\.\s]'
- 修复：gitcode: gitypshidifu...开头的混合消息不再被误杀为YAML行
- 公告查询得以正常进入知识库搜索

monitor.py

@@ -7391,7 +7391,7 @@ class MessageMonitor:
             if re.match(r'^[a-zA-Z_][\w]*\s*:\s*["\w\d]', ts) and \
                not re.match(r'^(https?|ftp)://', ts) and \
                not re.match(r'^[a-zA-Z_][\w]*\s*:\s*/', ts) and \
-               not re.match(r'^(github|gitee|gitcode|git)\.ypshidifu|git\.', ts, re.IGNORECASE):
+               not re.match(r'^(github|gitee|gitcode|git)[:\.\s]|git\.', ts, re.IGNORECASE):
                 logger.debug(f"[{platform}] Poll过滤: YAML行 ts={ts!r}")
                 continue
             # === 纯问句碎片（如"怎么办？" "好不好？"）无实质内容 ===