按规划继续工作

结论：扩展 tool_semantics 期望，固定 T/M6/G43/G49/M61 后 vendored LinuxCNC 的位置参数与 post-execute modal、override、spindle、mist、flood 状态读回，并同步验证文档。

wasm-port/tests/fixtures/canon/tool_semantics.events

@@ -9,3 +9,19 @@ canon_event=USE_TOOL_LENGTH_OFFSET x=0 y=0 z=0 a=0 b=0 c=0 u=0 v=0 w=0
 canon_event=MESSAGE:  tool g49 offset=0 x=0.0000 y=0.0000 z=0.0000
 canon_event=CHANGE_TOOL_NUMBER pocket=2
 canon_event=MESSAGE:  tool after_m61 current_pocket=2 current_tool=2
+setup.current_x=0
+setup.current_y=0
+setup.current_z=0
+setup.parameter_5420=0
+setup.parameter_5421=0
+setup.parameter_5422=0
+post_execute.plane=1
+post_execute.distance_mode=0
+post_execute.feed_mode=0
+post_execute.motion_mode=0
+post_execute.origin_index=0
+post_execute.feed_override=0
+post_execute.speed_override_0=0
+post_execute.spindle_turning_0=1
+post_execute.mist=0
+post_execute.flood=0