wsen-hids: Add two-point temperature calibration methods.

[nedseb]

Closes #105

Summary

Add two-point software temperature calibration to the WSEN-HIDS driver, following the harmonized interface defined in #103.

Changes

• Add self._temp_gain = 1.0 and self._temp_offset = 0.0 in __init__
• Add set_temp_offset(offset_c) — simple offset (resets gain to 1.0)
• Add calibrate_temperature(ref_low, measured_low, ref_high, measured_high) — computes gain and offset from two reference points
• Apply calibration in _convert_temperature(): return gain * factory_value + offset

API

hids = WSEN_HIDS(i2c)

# Simple offset
hids.set_temp_offset(-1.5)

# Two-point calibration (reference thermometer reads 25°C and 30°C
# when sensor reads 30°C and 35°C)
hids.calibrate_temperature(25.0, 30.0, 30.0, 35.0)

Hardware validation

Default:                       30.33 C
Offset -1.5:                   28.83 C  (= 30.33 - 1.5)
Calibrated (25@30, 30@35):     25.33 C  (gain=1.0, offset=-5.0)
Reset:                         30.33 C

Related

• drivers: Harmonize two-point temperature calibration across all sensors. #103 — Parent: harmonize temperature calibration across all sensors
• wsen-hids: Fix missing AUTO_INCREMENT bit in multi-byte register reads. #109 — AUTO_INCREMENT bug fix (prerequisite, merged)
• PR lis2mdl: Add temperature offset correction with calibration method. #98 — LIS2MDL offset (reference pattern, to be updated with two-point)

Test plan

• ruff check passes
• pytest tests/ -k mock — 44/44 passed (no regressions)
• Hardware: set_temp_offset() and calibrate_temperature() validated on board

[Copilot]

Pull request overview

Adds two-point software temperature calibration to the WSEN-HIDS driver (as part of the cross-driver harmonization effort) and extends the YAML scenario runner so mock scenarios can validate calibration behavior with multi-step scripts.

Changes:

• Add _temp_gain/_temp_offset state to WSEN-HIDS and apply it in the temperature conversion path.
• Introduce set_temp_offset() and calibrate_temperature() APIs on WSEN-HIDS.
• Add a new YAML scenario action (script) and new mock scenario coverage for offset and two-point calibration.

Reviewed changes

Copilot reviewed 4 out of 4 changed files in this pull request and generated 3 comments.

File	Description
lib/wsen-hids/wsen_hids/device.py	Adds temperature calibration state + public calibration methods and applies calibration in _convert_temperature().
tests/runner/executor.py	Implements mock-mode script action execution via exec() and returns result.
tests/test_scenarios.py	Adds handling for action: script (with a board-scenario guard) in the scenario test runner.
tests/scenarios/wsen_hids.yaml	Adds mock scenarios that validate temperature offset and two-point calibration behavior.

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[nedseb]

Suggestions Copilot prises en compte dans le commit 1a6bb31 :

1. calibrate_temperature() — ZeroDivisionError : ajout d'une validation ValueError quand measured_high == measured_low.
2. exec() — globals/locals séparés : utilisation d'un seul dict partagé pour globals et locals, avec i2c exposé en plus de dev.
3. result manquant : vérification explicite de la présence de result dans le script, avec ValueError si absent.

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