fix(update): accept cmhub release metadata contract

tests/test_gui.py

@@ -1747,9 +1747,6 @@ class GuiTests(TempDirMixin, unittest.TestCase):
             "latest_version": "1.2.0",
             "sha256": "a" * 64,
             "size_bytes": 100,
-            "package_format": "cmshopee-portable-v1",
-            "updater_protocol": 1,
-            "min_updater_protocol": 1,
         }
         http_dialog = ForcedUpdateDialog(
             update_check.UpdateCheckResult(

tests/test_update_check.py

@@ -92,6 +92,34 @@ class UpdateCheckTests(unittest.TestCase):
         self.assertEqual("abc", result.sha256)
         self.assertEqual("新版说明", result.message)
 
+    def test_check_for_update_accepts_cmhub_release_contract(self):
+        def fetcher(_url, _timeout):
+            return {
+                "platform": "windows",
+                "release": {
+                    "version": "0.1.6",
+                    "download_url": "http://185.216.248.75:24521/down/release.zip",
+                    "sha256": "a" * 64,
+                    "release_notes": "启动时联网获取更新信息",
+                    "force_update": True,
+                    "size_bytes": 53318076,
+                    "published_at": "2026-07-13T17:10:59.660653+08:00",
+                },
+            }
+
+        result = update_check.check_for_update(
+            current_version="0.1.5",
+            url="https://cm.example.test/api/v1/client/releases/latest?platform=windows",
+            fetcher=fetcher,
+        )
+
+        self.assertTrue(result.forced)
+        self.assertFalse(result.can_enter)
+        self.assertEqual("0.1.6", result.latest_version)
+        self.assertEqual(53318076, result.size_bytes)
+        self.assertEqual("", result.package_format)
+        self.assertEqual(0, result.updater_protocol)
+
     def test_network_failure_allows_entry(self):
         def fetcher(_url, _timeout):
             raise socket.timeout("timeout")

tests/test_update_installer.py

@@ -6,6 +6,7 @@ import unittest
 import urllib.request
 import zipfile
 from pathlib import Path
+from types import SimpleNamespace
 
 from app import release_manifest, update_installer
 
@@ -71,6 +72,20 @@ class UpdateInstallerTests(unittest.TestCase):
         values.update(changes)
         return update_installer.UpdatePackageMetadata(**values)
 
+    def test_online_release_uses_internal_package_contract_defaults(self):
+        info = SimpleNamespace(
+            latest_version="0.1.6",
+            download_url="http://downloads.external.test/cmshopee.zip",
+            sha256="a" * 64,
+            size_bytes=53318076,
+        )
+
+        metadata = update_installer.metadata_from_update_info(info)
+
+        self.assertEqual(release_manifest.PACKAGE_FORMAT, metadata.package_format)
+        self.assertEqual(release_manifest.UPDATER_PROTOCOL, metadata.updater_protocol)
+        self.assertEqual(release_manifest.UPDATER_PROTOCOL, metadata.min_updater_protocol)
+
     def test_prepare_update_verifies_and_reuses_pending(self):
         with tempfile.TemporaryDirectory() as temp_dir:
             payload = self.make_zip(temp_dir)