[Rajvira10]

When range-slider handles overlap at the minimum, clicking selects the immovable lower handle and prevents expanding the range. Prefer the upper overlapping handle at the minimum while preserving selection elsewhere.

Twenty-four regression cases fail on unchanged upstream. On both PyQt6 and PySide6, the slider suite reports 318 passed, 59 skipped and one expected failure; each full run has 454 passes and one unchanged font-metrics failure. Ruff lint and formatting pass; mypy stops on an existing configuration error. Fixes #150.

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 85.06%. Comparing base (4668c07) to head (220f907).

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #360      +/-   ##
==========================================
+ Coverage   84.92%   85.06%   +0.14%     
==========================================
  Files          49       49              
  Lines        3940     3944       +4     
==========================================
+ Hits         3346     3355       +9     
+ Misses        594      589       -5     

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