feat(subscription): add membership access preflight

app/gui/workers.py

@@ -23,6 +23,7 @@ from .. import (
     image_studio_generation,
     image_studio_images,
     product_status,
+    subscription,
 )
 from ..collect_skip import ALIAS_UNMATCHED, LOGIN_REQUIRED, empty_skip_reason_counts
 from .widgets import *
@@ -34,6 +35,22 @@ _USER_LOG_PATH_RE = re.compile(
 )
 
 
+class SubscriptionCheckWorker(BaseWorker):
+    """Fetch the current cmshopee account subscription away from the GUI thread."""
+
+    def __init__(self, *, config=None, cmhub_config_path=None):
+        super().__init__()
+        self.config = config
+        self.cmhub_config_path = cmhub_config_path
+
+    def execute(self):
+        result = subscription.check_status(
+            self.config,
+            cmhub_config_path=self.cmhub_config_path,
+        )
+        return {"subscription": result}
+
+
 def _image_studio_step_label(step):
     return {
         "ensure_chrome": "准备账号浏览器",