lis2mdl: Address Copilot review on PR #114.

Author: nedseb

lib/lis2mdl/lis2mdl/device.py

@@ -252,14 +252,11 @@ def read_temperature_c(self) -> float:
     def set_temp_offset(self, offset_c):
         """Set a temperature offset in °C (gain remains 1.0).
 
-        This replaces the default base offset (25 °C) with the given value.
-
         Args:
             offset_c: offset value in degrees Celsius.
         """
         self._temp_gain = 1.0
-        self._temp_offset = 0.0
-        self._temp_base_offset = float(offset_c)
+        self._temp_offset = float(offset_c)
 
     def calibrate_temperature(self, ref_low, measured_low, ref_high, measured_high):
         """Two-point calibration from reference measurements.

tests/scenarios/lis2mdl.yaml

@@ -73,9 +73,9 @@ tests:
   - name: "Temperature with offset"
     action: script
     script: |
-      dev.set_temp_offset(30.0)
+      dev.set_temp_offset(-2.0)
       result = dev.read_temperature_c()
-    expect: 30.0
+    expect_range: [22.0, 24.0]
     mode: [mock]
 
   - name: "Temperature with two-point calibration"