Initial project scaffold for Setec Partition Wizard

C++17/Qt6 application for disk recovery, repair, flashing, formatting,
and USB security key creation on Windows. Includes CMake build system,
tabbed UI shell with 6 main tabs, core type system with Result<T>
monadic error handling, admin elevation, and dark Catppuccin theme.

tests/test_result.cpp

@@ -0,0 +1,72 @@
+#include "core/common/Result.h"
+
+#include <gtest/gtest.h>
+#include <string>
+
+using namespace spw;
+
+TEST(ResultTest, SuccessValue)
+{
+    Result<int> r(42);
+    EXPECT_TRUE(r.isOk());
+    EXPECT_FALSE(r.isError());
+    EXPECT_EQ(r.value(), 42);
+}
+
+TEST(ResultTest, ErrorValue)
+{
+    Result<int> r(ErrorInfo::fromCode(ErrorCode::DiskNotFound, "disk missing"));
+    EXPECT_FALSE(r.isOk());
+    EXPECT_TRUE(r.isError());
+    EXPECT_EQ(r.error().code, ErrorCode::DiskNotFound);
+    EXPECT_EQ(r.error().message, "disk missing");
+}
+
+TEST(ResultTest, ValueOr)
+{
+    Result<int> ok(10);
+    EXPECT_EQ(ok.valueOr(99), 10);
+
+    Result<int> err(ErrorInfo::fromCode(ErrorCode::Unknown));
+    EXPECT_EQ(err.valueOr(99), 99);
+}
+
+TEST(ResultTest, BoolConversion)
+{
+    Result<std::string> ok(std::string("hello"));
+    EXPECT_TRUE(static_cast<bool>(ok));
+
+    Result<std::string> err(ErrorInfo::fromCode(ErrorCode::Unknown));
+    EXPECT_FALSE(static_cast<bool>(err));
+}
+
+TEST(ResultTest, Map)
+{
+    Result<int> r(5);
+    auto mapped = r.map([](int v) { return v * 2; });
+    EXPECT_TRUE(mapped.isOk());
+    EXPECT_EQ(mapped.value(), 10);
+}
+
+TEST(ResultTest, MapOnError)
+{
+    Result<int> r(ErrorInfo::fromCode(ErrorCode::DiskReadError));
+    auto mapped = r.map([](int v) { return v * 2; });
+    EXPECT_TRUE(mapped.isError());
+    EXPECT_EQ(mapped.error().code, ErrorCode::DiskReadError);
+}
+
+TEST(ResultVoidTest, Success)
+{
+    Result<void> r = Result<void>::ok();
+    EXPECT_TRUE(r.isOk());
+    EXPECT_FALSE(r.isError());
+}
+
+TEST(ResultVoidTest, Error)
+{
+    Result<void> r(ErrorInfo::fromCode(ErrorCode::DiskWriteError, "write failed"));
+    EXPECT_FALSE(r.isOk());
+    EXPECT_TRUE(r.isError());
+    EXPECT_EQ(r.error().code, ErrorCode::DiskWriteError);
+}