Add D455 sensor host and shared Node/Core preparation surface

apps/node-agent/sensors/bootstrap.py

@@ -0,0 +1,13 @@
+"""Isolated interpreter; only root-owned pinned runtime and product code on sys.path."""
+
+import sys
+from pathlib import Path
+
+root = Path("/var/lib/mission-core-node-drivers")
+path = Path((root / "active.path").read_text())
+if path.parent != root or not path.name.isalnum() or path.is_symlink() or path.stat().st_uid != 0:
+    raise RuntimeError("Invalid driver installation")
+sys.path[:0] = [str(path), "/usr/lib/mission-core-node/sensors", "/usr/lib/mission-core-node/sdk"]
+from server import main  # noqa: E402 — use only the verified isolated runtime above
+
+main()