chore: import upstream snapshot with attribution

tests/integration/sandbox_cli/test_linux_cloud_container.py

@@ -0,0 +1,70 @@
+"""Launch a persistent cloud Linux container via the CLI.
+
+    cua sb launch ubuntu:24.04 --json
+    # parse name from JSON output, connect with SDK, run assertions
+    cua sb delete <name>
+
+Mirrors tests/integration/sandbox_sdk/test_linux_cloud_container.py but exercises the
+CLI launch path and persistent state tracking instead of Sandbox.ephemeral().
+Requires CUA_API_KEY environment variable.
+"""
+
+from __future__ import annotations
+
+import asyncio
+import json
+import os
+import subprocess
+
+import pytest
+from cua_sandbox import Sandbox
+
+pytestmark = pytest.mark.asyncio
+
+
+def _has_cua_api_key() -> bool:
+    return bool(os.environ.get("CUA_API_KEY"))
+
+
+def _cua(*args: str) -> subprocess.CompletedProcess:
+    return subprocess.run(["cua", *args], capture_output=True, text=True)
+
+
+@pytest.mark.skipif(not _has_cua_api_key(), reason="CUA_API_KEY not set")
+async def test_linux_cloud_container():
+    result = _cua("sb", "launch", "ubuntu:24.04", "--json")
+    assert result.returncode == 0, f"launch failed:\n{result.stderr}"
+    name = json.loads(result.stdout)["name"]
+
+    try:
+        async with Sandbox.connect(name) as sb:
+            out = await sb.shell.run("uname -s")
+            assert out.success
+            assert "Linux" in out.stdout
+
+            screenshot = await sb.screenshot()
+            assert screenshot[:4] == b"\x89PNG"
+    finally:
+        _cua("sb", "delete", name)
+
+
+async def main():
+    r = _cua("sb", "launch", "ubuntu:24.04", "--json")
+    print(f"launch exit={r.returncode}")
+    name = json.loads(r.stdout)["name"]
+    print(f"name: {name}")
+
+    try:
+        async with Sandbox.connect(name) as sb:
+            out = await sb.shell.run("uname -s")
+            print(f"uname: {out.stdout.strip()}")
+            screenshot = await sb.screenshot()
+            print(f"Screenshot: {len(screenshot)} bytes")
+            with open("/tmp/cli_linux_cloud_container.png", "wb") as f:
+                f.write(screenshot)
+    finally:
+        _cua("sb", "delete", name)
+
+
+if __name__ == "__main__":
+    asyncio.run(main())