fix update

src/common/utils/registry.h

@@ -19,6 +19,10 @@ namespace registry
     namespace install_scope
     {
         const wchar_t INSTALL_SCOPE_REG_KEY[] = L"Software\\Classes\\powertoys\\";
+        const wchar_t UNINSTALL_REG_KEY[] = L"Software\\Microsoft\\Windows\\CurrentVersion\\Uninstall";
+        
+        // Bundle UpgradeCode from PowerToys.wxs
+        const wchar_t BUNDLE_UPGRADE_CODE[] = L"6341382d-c0a9-4238-9188-be9607e3fab2";
 
         enum class InstallScope
         {
@@ -26,8 +30,67 @@ namespace registry
             PerUser,
         };
 
+        // Helper function to find PowerToys bundle in Windows Uninstall registry by BundleUpgradeCode
+        inline bool find_powertoys_bundle_in_uninstall_registry(HKEY rootKey)
+        {
+            HKEY uninstallKey{};
+            if (RegOpenKeyExW(rootKey, UNINSTALL_REG_KEY, 0, KEY_READ, &uninstallKey) != ERROR_SUCCESS)
+            {
+                return false;
+            }
+            detail::on_exit closeUninstallKey{ [uninstallKey] { RegCloseKey(uninstallKey); } };
+
+            DWORD index = 0;
+            wchar_t subKeyName[256];
+
+            // Enumerate all subkeys under Uninstall
+            while (RegEnumKeyW(uninstallKey, index++, subKeyName, 256) == ERROR_SUCCESS)
+            {
+                HKEY productKey{};
+                if (RegOpenKeyExW(uninstallKey, subKeyName, 0, KEY_READ, &productKey) != ERROR_SUCCESS)
+                {
+                    continue;
+                }
+                detail::on_exit closeProductKey{ [productKey] { RegCloseKey(productKey); } };
+
+                // Check BundleUpgradeCode value (specific to WiX Bundle installations)
+                wchar_t bundleUpgradeCode[256]{};
+                DWORD bundleUpgradeCodeSize = sizeof(bundleUpgradeCode);
+
+                if (RegQueryValueExW(productKey, L"BundleUpgradeCode", nullptr, nullptr,
+                                    reinterpret_cast<LPBYTE>(bundleUpgradeCode), &bundleUpgradeCodeSize) == ERROR_SUCCESS)
+                {
+                    if (_wcsicmp(bundleUpgradeCode, BUNDLE_UPGRADE_CODE) == 0)
+                    {
+                        return true;
+                    }
+                }
+            }
+
+            return false;
+        }
+
         inline const InstallScope get_current_install_scope()
         {
+            // 1. Check HKCU Uninstall registry first (user-level bundle)
+            // Note: MSI components are always in HKLM regardless of install scope,
+            // but the Bundle entry will be in HKCU for per-user installations
+            if (find_powertoys_bundle_in_uninstall_registry(HKEY_CURRENT_USER))
+            {
+                Logger::info(L"Found user-level PowerToys bundle via BundleUpgradeCode in HKCU");
+                return InstallScope::PerUser;
+            }
+
+            // 2. Check HKLM Uninstall registry (machine-level bundle)
+            if (find_powertoys_bundle_in_uninstall_registry(HKEY_LOCAL_MACHINE))
+            {
+                Logger::info(L"Found machine-level PowerToys bundle via BundleUpgradeCode in HKLM");
+                return InstallScope::PerMachine;
+            }
+
+            // 3. Fallback to legacy custom registry key detection
+            Logger::info(L"PowerToys bundle not found in Uninstall registry, falling back to legacy detection");
+
             // Open HKLM key
             HKEY perMachineKey{};
             if (RegOpenKeyExW(HKEY_LOCAL_MACHINE,
@@ -45,6 +108,7 @@ namespace registry
                                   &perUserKey) != ERROR_SUCCESS)
                 {
                     // both keys are missing
+                    Logger::warn(L"No PowerToys installation detected, defaulting to PerMachine");
                     return InstallScope::PerMachine;
                 }
                 else