added multidevice support

python_app/storage/npz/paths.py

@@ -3,6 +3,7 @@
 from __future__ import annotations
 
 import re
+from collections.abc import Sequence
 
 
 def radar_key_from_config(
@@ -13,9 +14,13 @@ def radar_key_from_config(
     sweep_points: int,
     ifbw_hz: float,
     power_dbm: float,
+    extra_serials: Sequence[str] | None = None,
 ) -> str:
     """Build deterministic key for calibration/reference set lookup."""
-    serial_part = serial or "no_serial"
+    serial_parts = [serial or "no_serial"]
+    if extra_serials:
+        serial_parts.extend(str(value).strip() or "no_serial" for value in extra_serials)
+    serial_part = "_".join(sanitize_path_component(value) for value in serial_parts)
     start_token = _format_float_for_key(sweep_start_hz)
     stop_token = _format_float_for_key(sweep_stop_hz)
     ifbw_token = _format_float_for_key(ifbw_hz)