Method exception_handler_callback

tests/crash_handler_win.h:580–614

    // --- Static callbacks (Windows API requires function pointers) ---

    static LONG WINAPI exception_handler_callback(EXCEPTION_POINTERS* ExceptionInfo) {
        DWORD code = ExceptionInfo->ExceptionRecord->ExceptionCode;

        if (!is_fatal_exception(code)) {
            return EXCEPTION_CONTINUE_SEARCH;
        }

        // Prevent recursion if handler crashes
        static volatile LONG already_dumping = 0;
        if (InterlockedExchange(&already_dumping, 1) != 0) {
            return EXCEPTION_CONTINUE_SEARCH;
        }

        auto& self = instance();
        self.begin_crash_dump();

        printf("\n=== INTERNAL EXCEPTION HANDLER (WINDOWS) ===\n");
        printf("Exception caught: 0x%08lx at address 0x%p\n",
               code, ExceptionInfo->ExceptionRecord->ExceptionAddress);

        print_exception_type(code, ExceptionInfo->ExceptionRecord);

        self.print_stacktrace_from_context(ExceptionInfo->ContextRecord);

        printf("=== END INTERNAL HANDLER ===\n\n");

        self.end_crash_dump();

        printf("Uninstalling exception handler, passing exception to external debugger...\n");
        fflush(stdout);

        SetUnhandledExceptionFilter(NULL);

        return EXCEPTION_CONTINUE_SEARCH;
    }

    static void signal_handler_callback(int sig) {
        // Prevent recursion if handler crashes