Step 126: build system detection and error jump

editor/tests/step126_test.cpp

@@ -0,0 +1,40 @@
+// Step 126 TDD Test: Build system detection + error parsing
+#include "BuildSystem.h"
+#include <iostream>
+
+static void expect(bool cond, const std::string& name, int& passed, int& failed) {
+    if (cond) {
+        std::cout << "Test " << (passed + failed + 1) << " PASS: " << name << "\n";
+        ++passed;
+    } else {
+        std::cout << "Test " << (passed + failed + 1) << " FAIL: " << name << "\n";
+        ++failed;
+    }
+}
+
+int main() {
+    int passed = 0;
+    int failed = 0;
+
+    // Parse GCC/Clang style
+    std::string gcc = "src/main.cpp:12:5: error: something bad";
+    auto errs = BuildSystem::parseErrors(gcc);
+    expect(errs.size() == 1, "parse gcc error", passed, failed);
+    if (!errs.empty()) {
+        expect(errs[0].file == "src/main.cpp", "gcc file", passed, failed);
+        expect(errs[0].line == 12, "gcc line", passed, failed);
+        expect(errs[0].col == 5, "gcc col", passed, failed);
+    }
+
+    // Parse MSVC style
+    std::string msvc = "C:/proj/main.cpp(42): error C2143: syntax error";
+    auto errs2 = BuildSystem::parseErrors(msvc);
+    expect(errs2.size() == 1, "parse msvc error", passed, failed);
+    if (!errs2.empty()) {
+        expect(errs2[0].file.find("main.cpp") != std::string::npos, "msvc file", passed, failed);
+        expect(errs2[0].line == 42, "msvc line", passed, failed);
+    }
+
+    std::cout << "\n=== Step 126 Results: " << passed << " passed, " << failed << " failed ===\n";
+    return failed == 0 ? 0 : 1;
+}