fix: update size type to int63_t and initialize struct stat in UABPackager and Builder

Changed the size type from int to int64_t in both Builder and UABPackager to ensure proper handling of larger values. Additionally, initialized struct stat variables to improve code clarity and maintainability.

Author: myml

libs/linglong/src/linglong/builder/linglong_builder.cpp

@@ -1371,7 +1371,7 @@ utils::error::Result<void> Builder::commitToLocalRepo() noexcept
         if (!ret) {
             return LINGLONG_ERR(ret);
         }
-        info.size = static_cast<int>(*ret);
+        info.size = static_cast<int64_t>(*ret);
 
         QFile infoFile{ moduleOutput.filePath("info.json") };
         if (!infoFile.open(QIODevice::WriteOnly | QIODevice::Truncate)) {
@@ -2248,7 +2248,9 @@ utils::error::Result<bool> Builder::generateDependsScript() noexcept
 
 void Builder::takeTerminalForeground()
 {
-    struct sigaction sa{};
+    struct sigaction sa
+    {
+    };
 
     sa.sa_handler = SIG_IGN;
     sigaction(SIGTTOU, &sa, NULL);

libs/linglong/src/linglong/package/uab_packager.cpp

@@ -702,7 +702,7 @@ utils::error::Result<void> UABPackager::prepareBundle(const QDir &bundleDir, boo
             if (!newSize) {
                 return LINGLONG_ERR(newSize);
             }
-            info.size = static_cast<int>(*newSize);
+            info.size = static_cast<int64_t>(*newSize);
 
             stream << nlohmann::json(info).dump();
             layerInfoRef.info = info;