fix: avoid private telemetry thread state

[Mirochill]

Description

Fixes #179 by avoiding threading.Thread._is_stopped in TelemetryManager.stop(). Python 3.13+ no longer keeps this private implementation detail stable, so stopping telemetry can crash while checking the telemetry thread.

PR type
Select all the labels that apply to this PR.

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)
• Documentation update
• Code refactoring
• Performance improvement
• Test update
• Build/CI configuration change
• Other (please describe):

Key modifications and changes

• Replaced the private _is_stopped check with the public Thread.is_alive() API.
• Kept the change limited to the telemetry manager stop guard.

Affected components

Juturna core library: TelemetryManager.

Additional context

Validation:

• git diff --check HEAD~1..HEAD
• rg -n _is_stopped|is_alive|test_telemetry_stop_uses_public_thread_api juturna tests

Not run locally.

[b3by]

I would completely skip testing for this fix, especially considering the approach of mocking the entire Thread class. Could you please remove this file from the PR?

[Mirochill]

Thanks, removed tests/test_telemetry_manager.py as requested. The PR now only changes TelemetryManager.stop() to use Thread.is_alive() instead of _is_stopped.

Validation:

• git diff --check HEAD~1..HEAD
• rg -n _is_stopped|is_alive|test_telemetry_stop_uses_public_thread_api juturna tests

Not run locally: test suite.

[b3by]

Super, thank you!