chore(py): release tket-py 0.14.0

[hugrbot]

🤖 I have created a release beep boop

0.14.0 (2026-05-28)

⚠ BREAKING CHANGES

• qsystem: tket-qsystem conversion, lowering and codegen methods take additional QSystemPlatform parameter to choose target platform.
• Circuit::circuit_cost now computes the cost of all descendant nodes of a circuit, not just TketOps.

Features

• qsystem: multiple platform extensions (#1567) (b60553f)

Code Refactoring

• Deprecate commands iterator (#1611) (8a43301)

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[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 85.62%. Comparing base (b60553f) to head (85a5d79).

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #1630   +/-   ##
=======================================
  Coverage   85.62%   85.62%           
=======================================
  Files         190      190           
  Lines       30534    30534           
  Branches    29189    29189           
=======================================
  Hits        26145    26145           
  Misses       3266     3266           
  Partials     1123     1123           

Flag	Coverage Δ
python	90.14% <100.00%> (ø)

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