fix: hide cmhub curl download window

app/ai.py

@@ -1452,6 +1452,21 @@ def _find_system_curl():
     return ""
 
 
+def _subprocess_hidden_window_kwargs():
+    if os.name != "nt":
+        return {}
+    creationflags = getattr(subprocess, "CREATE_NO_WINDOW", 0)
+    if creationflags:
+        return {"creationflags": creationflags}
+    startupinfo_cls = getattr(subprocess, "STARTUPINFO", None)
+    if startupinfo_cls is None:
+        return {}
+    startupinfo = startupinfo_cls()
+    startupinfo.dwFlags |= getattr(subprocess, "STARTF_USESHOWWINDOW", 1)
+    startupinfo.wShowWindow = getattr(subprocess, "SW_HIDE", 0)
+    return {"startupinfo": startupinfo}
+
+
 def _download_cmhub_image_with_curl(
     url,
     connect_timeout,
@@ -1501,6 +1516,7 @@ def _download_cmhub_image_with_curl(
                 timeout=max(2, int(connect_timeout) + int(read_timeout) + 10),
                 check=False,
                 shell=False,
+                **_subprocess_hidden_window_kwargs(),
             )
         except (OSError, subprocess.TimeoutExpired) as exc:
             raise AIError("下载 cmhub 图片失败: curl 执行失败") from exc