提示词：

对标 LinuxCNC，分阶段完善 Web 版数控系统仿真的 WASM 程序，继续补齐 G 代码语法并严格测试。

总结：
对齐 LinuxCNC read_g 的 G80 特例：同一行 G80 与另一个运动模态 G 码共存时不触发同组冲突；新增 G80 G1 与 G1 G80 用例。已通过 ./test-native.sh 和 ./test-linuxcnc-source-link.sh。

core/tests/cnc_sim_api_smoke.cpp

@@ -3582,6 +3582,26 @@ int main() {
                                        sizeof(same_modal_group_g_program) - 1) != 0,
                  "expected LinuxCNC to reject two G codes from the same modal group");
 
+    const char g80_before_motion_program[] =
+        "G21 G90\n"
+        "F100\n"
+        "G80 G1 X1\n";
+    events.clear();
+    ok &= expect(cnc_sim_parse_program(sim,
+                                       g80_before_motion_program,
+                                       sizeof(g80_before_motion_program) - 1) == 0,
+                 "expected LinuxCNC to allow G80 before another motion G code");
+
+    const char g80_after_motion_program[] =
+        "G21 G90\n"
+        "F100\n"
+        "G1 G80 X1\n";
+    events.clear();
+    ok &= expect(cnc_sim_parse_program(sim,
+                                       g80_after_motion_program,
+                                       sizeof(g80_after_motion_program) - 1) == 0,
+                 "expected LinuxCNC to allow G80 after another motion G code");
+
     const char same_modal_group_m_program[] =
         "G21 G90\n"
         "M3 M4\n";