参考所有分组：补 G73 G85 G86 G89 source 覆盖，测试通过

test-linuxcnc-source-link.sh

@@ -577,6 +577,9 @@ if CNC_SIM_RS274_VAR="$var_file" \
     exit 1
 fi
 grep -q "J word missing with g87" "$output_dir/cnc_sim_linuxcnc_source_canned_cycle_g87_missing_j_error.err"
+# Source basis: LinuxCNC src/emc/rs274ngc/interp_cycles.cc
+# convert_cycle_g73()/g85()/g86()/g89() expand peck, feed-out,
+# stop/restart, dwell, and retract sequences through Canon motion.
 CNC_SIM_RS274_VAR="$var_file" \
     "$build_dir/linuxcnc_rs274_source_dump" tests/gcode/linuxcnc_canned_cycles_extended.ngc \
     >"$output_dir/cnc_sim_linuxcnc_source_canned_cycles_extended.json"
@@ -2141,6 +2144,65 @@ expected_g87_sequence = [
 if g87_sequence != expected_g87_sequence:
     raise SystemExit(f"unexpected source-linked G87 back-boring sequence: {g87_sequence!r}")
 
+g73_feed_depths = [
+    event["end"]["z"]
+    for event in extended_cycle
+    if event["type"] == "linear-feed" and event["line"] == 15
+]
+if g73_feed_depths != [1, 0, -1, -2, -3]:
+    raise SystemExit(f"unexpected source-linked G73 peck depths: {g73_feed_depths!r}")
+g73_rapid_depths = [
+    event["end"]["z"]
+    for event in extended_cycle
+    if event["type"] == "rapid" and event["line"] == 15 and event["end"]["x"] == 70
+]
+if g73_rapid_depths != [2, 2, 1, 0, -1, 2]:
+    raise SystemExit(f"unexpected source-linked G73 short-retract depths: {g73_rapid_depths!r}")
+
+g85_sequence = [
+    g84_signature(event)
+    for event in extended_cycle
+    if event["line"] == 16 and event["type"] == "linear-feed"
+]
+expected_g85_sequence = [
+    ("linear-feed", 80, -2),
+    ("linear-feed", 80, 2),
+]
+if g85_sequence != expected_g85_sequence:
+    raise SystemExit(f"unexpected source-linked G85 feed-out sequence: {g85_sequence!r}")
+
+g86_sequence = [
+    g84_signature(event)
+    for event in extended_cycle
+    if event["line"] == 17 and event["type"] in {"linear-feed", "set-spindle", "dwell"}
+]
+expected_g86_sequence = [
+    ("linear-feed", 90, -2),
+    ("dwell", 0.06),
+    ("set-spindle", 0, 0),
+    ("set-spindle", 800, 1),
+]
+if g86_sequence != expected_g86_sequence:
+    raise SystemExit(f"unexpected source-linked G86 stop/restart sequence: {g86_sequence!r}")
+if not any(
+    event["type"] == "rapid" and event["line"] == 17 and event["end"]["x"] == 90 and event["end"]["z"] == 2
+    for event in extended_cycle
+):
+    raise SystemExit("missing source-linked G86 rapid retract")
+
+g89_sequence = [
+    g84_signature(event)
+    for event in extended_cycle
+    if event["line"] == 18 and event["type"] in {"linear-feed", "dwell"}
+]
+expected_g89_sequence = [
+    ("linear-feed", 100, -2),
+    ("dwell", 0.08),
+    ("linear-feed", 100, 2),
+]
+if g89_sequence != expected_g89_sequence:
+    raise SystemExit(f"unexpected source-linked G89 dwell/feed-out sequence: {g89_sequence!r}")
+
 arc_planes = json.loads((OUTPUT_DIR / "cnc_sim_linuxcnc_source_arc_planes.json").read_text())
 if not any(
     event["type"] == "arc-feed" and