Clear stale toolpaths on program replacement

coverage/xyzac-panel-button-parity.report.json

@@ -32,6 +32,15 @@
     ],
     "status": "verified"
   },
+  "program_preview_replacement": {
+    "test": "node --experimental-strip-types web/worker/test_xyzac_program_replace.mjs",
+    "first_program_segments": 1,
+    "failed_program_segments": 0,
+    "second_program_segments": 1,
+    "old_preview_retained_after_failure": false,
+    "browser_screenshot_sha256": "c3e0a5b992381e7b6cb26f98a30338935df5239c875755727fc678911452ac24",
+    "status": "verified"
+  },
   "switchkins_direct_matrix": {
     "command": "node --experimental-strip-types web/worker/test_xyzac_trt_case.mjs",
     "sequence": [0, 1, 2, 0, 1, 2, 0],
@@ -75,7 +84,7 @@
   },
   "published_browser_smoke": {
     "url": "https://49.232.250.35:58010/",
-    "release": "20260902-linuxcnc-wasm-live-parameters-r14",
+    "release": "20260902-linuxcnc-wasm-program-replace-r15",
     "status": "verified",
     "startup_pause_resume_stop": "verified",
     "pause_tick": 140,
@@ -120,8 +129,8 @@
       "switchkins": "920b85ad7fd6451dfb134255ffdcc4f03a7aa615ebf486c63cde8582e17af195"
     },
     "resource_sha256": {
-      "index-CDC5yZJC.js": "c3a6aa009e091d5fcb2098c7254313d987229abc1e4765052edb15b465ca0fc4",
-      "sim-worker-entry-BQKHHWpv.js": "e72d80d9ae0fd679d92d3efbad4dba1eef55f9ce7b54bcd06e4a0d644c3cfb1a",
+      "index-DUB3ldSh.js": "4d71a2eb0b162608d7a47b63274cf274a57b1c2f2620b69af139b12c2ba22cce",
+      "sim-worker-entry-yfjiq6MN.js": "a0cf75522ddc9c6712126de86937ec89f24574bf0e0dad3dbddc6d807fb352b7",
       "linuxcnc-sim-core-fuIvKetC.wasm": "ad4e17ecbf73afbad0d9f069ab20ba3c66b6cc4d75ecdb2b3182673490ee916d"
     },
     "authority_dom": {