补齐 probe 刀补错误覆盖

结论：基于 LinuxCNC interp_convert.cc convert_probe()，native/source-link 现在覆盖 cutter radius comp 打开时 G38 probe 被拒绝的失败分支。

test-linuxcnc-rs274-native.sh

@@ -526,9 +526,10 @@ for case in "${threading_convert_error_cases[@]}"; do
     grep -Fq "$expected" "$output_dir/cnc_sim_linuxcnc_$fixture.err"
 done
 # Source basis: LinuxCNC src/emc/rs274ngc/interp_convert.cc convert_probe()
-# rejects zero feed, feed-per-revolution mode, and degenerate probe moves before
-# issuing STRAIGHT_PROBE().
+# rejects active cutter compensation, zero feed, feed-per-revolution mode, and
+# degenerate probe moves before issuing STRAIGHT_PROBE().
 probe_convert_error_cases=(
+    "linuxcnc_probe_cutter_comp_error|Cannot probe with cutter radius comp on"
     "linuxcnc_probe_zero_feed_error|Cannot probe with zero feed rate"
     "linuxcnc_probe_feed_per_rev_error|Cannot probe with feed per rev mode"
     "linuxcnc_probe_start_too_close_error|Start point too close to probe point"

test-linuxcnc-source-link.sh

@@ -1183,9 +1183,10 @@ for case in "${threading_convert_error_cases[@]}"; do
     grep -Fq "$expected" "$output_dir/cnc_sim_linuxcnc_source_$fixture.err"
 done
 # Source basis: LinuxCNC src/emc/rs274ngc/interp_convert.cc convert_probe()
-# rejects zero feed, feed-per-revolution mode, and degenerate probe moves before
-# issuing STRAIGHT_PROBE().
+# rejects active cutter compensation, zero feed, feed-per-revolution mode, and
+# degenerate probe moves before issuing STRAIGHT_PROBE().
 probe_convert_error_cases=(
+    "linuxcnc_probe_cutter_comp_error|Cannot probe with cutter radius comp on"
     "linuxcnc_probe_zero_feed_error|Cannot probe with zero feed rate"
     "linuxcnc_probe_feed_per_rev_error|Cannot probe with feed per rev mode"
     "linuxcnc_probe_start_too_close_error|Start point too close to probe point"

tests/gcode/linuxcnc_probe_cutter_comp_error.ngc

@@ -0,0 +1,4 @@
+G21 G90 G17
+G41 D1
+F100
+G38.2 Z1