feat: initialize XAS test console with native execution

scripts/smoke_task.py

@@ -0,0 +1,38 @@
+#!/usr/bin/env python3
+"""Synthetic fixture. No GPU, network, model calls or existing data access."""
+import json
+from pathlib import Path
+import subprocess
+import sys
+import time
+
+
+def main():
+    mode, run_id, destination = sys.argv[1:]
+    folder = Path(destination)
+    print("SYNTHETIC FLOW ACCEPTANCE: not a model benchmark", flush=True)
+    if mode == "wait":
+        child = subprocess.Popen([sys.executable, "-c", "import time; time.sleep(60)"])
+        (folder / "child.pid").write_text(str(child.pid), encoding="utf-8")
+        print(f"waiting; controlled_child_pid={child.pid}", flush=True)
+        child.wait(timeout=65)
+        return 0
+    if mode == "failure":
+        print("Expected fixture failure", flush=True)
+        return 23
+    if mode == "invalid-report":
+        (folder / "result.json").write_text('{"incomplete":true}', encoding="utf-8")
+        return 0
+    if mode != "success":
+        return 2
+    for step in range(1, 4):
+        print(f"progress={step}/3", flush=True)
+        time.sleep(.2)
+    (folder / "result.json").write_text(json.dumps({
+        "run_id": run_id, "synthetic": True, "checks_passed": 3,
+        "description": "Synthetic flow acceptance only"}), encoding="utf-8")
+    return 0
+
+
+if __name__ == "__main__":
+    sys.exit(main())