参考所有分组，完成尽量多的内容。禁止顺手扩功能 smoke：锁定dlfcn禁用边界

结论：按 LinuxCNC src/emc/rs274ngc/interp_base.cc 的 dlopen/dlsym/dlerror 调用点，补强 WASM dlfcn shim 与 interp_base probe，确认浏览器安全探针中动态加载保持不可用；不扩展 smoke 解析。

core/wasm_shims/interp_base_probe_main.cc

@@ -1,8 +1,29 @@
+#include "dlfcn.h"
 #include "interp_base.hh"
 
+#include <cstring>
+
 // LinuxCNC source basis: src/emc/rs274ngc/interp_base.cc provides
-// interp_from_shlib(), with the declaration in interp_base.hh.
+// interp_from_shlib(), with the declaration in interp_base.hh. Its native
+// dlopen()/dlsym() loader edge is intentionally unavailable in WASM probes.
 int main() {
+    if (dlopen(nullptr, RTLD_GLOBAL) != nullptr) {
+        return 2;
+    }
+    if (dlopen("/tmp/cnc_sim_missing_interpreter.so", RTLD_NOW) != nullptr) {
+        return 3;
+    }
+    if (dlsym(nullptr, "makeInterp") != nullptr) {
+        return 4;
+    }
+    const char *error = dlerror();
+    if (!error || !std::strstr(error, "dynamic loading is unavailable")) {
+        return 5;
+    }
+    if (dlclose(nullptr) != 0) {
+        return 6;
+    }
+
     InterpBase *interp = interp_from_shlib("nonexistent-interpreter.so");
     return interp == nullptr ? 0 : 1;
 }