Complete XYZAC LinuxCNC WASM parity and smooth 3D preview

coverage/task-packets/RTCP-12.handoff.json

@@ -0,0 +1,38 @@
+{
+  "schema": "task-handoff.v1",
+  "task_id": "RTCP-12",
+  "context_id": "linuxcnc-2.10.0-pre0-wasm-m1-py-c1",
+  "status": "verified",
+  "scope": "xyzac_only",
+  "result": "Selected xyzac-trt.ini native/Worker/WASM/React/Three.js parity aggregate verified with explicit release exclusions",
+  "report": {"path": "coverage/xyzac-trt-web-wasm-parity.report.json", "sha256": "676f94870045670d2808c2193bded706fdd4909f06d70be00f46dd2653d92927"},
+  "outputs": [
+    {"path": "scripts/generate_xyzac_trt_web_wasm_parity_report.py", "sha256": "fd658a157981d8ca8bd95eecea3cf803443c0f10c7d7ca1dde75c184a69abd4d"},
+    {"path": "coverage/xyzac-trt-web-wasm-parity.report.json", "sha256": "032912a30e5bdd970f6ff10cadb9a30642b7bdb45252ea40cd7f1b953a1050c7"}
+  ],
+  "checks": {
+    "baseline": "passed",
+    "download_index": "passed",
+    "pointer": "passed",
+    "all_13_selected_case_reports": "passed",
+    "native_wasm_trace": "passed",
+    "native_worker_trace": "passed",
+    "first_divergent_tick_normal": "null",
+    "first_divergent_tick_positive_sample": "2",
+    "browser_desktop_mobile": "passed",
+    "recovery_endpoint_equal": "passed",
+    "blocker_identity_explicit": "passed",
+    "report_self_hash": "passed"
+  },
+  "evidence": {
+    "report_count": 13,
+    "candidate_eligible": false,
+    "release_status": "STOP_RELEASE",
+    "excluded": ["Safari", "physical power loss", "host hardware", "xyzbc", "3axis", "other cases"],
+    "first_divergent_tick": null
+  },
+  "failure_samples": [],
+  "next_task": "RELEASE-00",
+  "next_task_status": "queued",
+  "release_status": "STOP_RELEASE"
+}