Name input parameters after socket names

[BradyAJohnston]

Constructor and factory parameters, i.<name> and to_python now use the socket's display name, as #269 does for outputs (ColorRamp(factor=), GeometryProximity(geometry=, sample_position=), group_id=, …). Old keywords still work with a DeprecationWarning (removed in 530).

[codspeed]

Merging this PR will not alter performance

⚠️ 1 benchmark spent significant time in system calls

System calls cannot be consistently instrumented, so they are not included in the measure, which understates the real cost. Please switch to the Walltime instrument to accurately measure system calls.

Measurement and system calls

• test_arrange_math_expression

✅ 15 untouched benchmarks

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_{Comparing input-names-from-socket-names (ad94cee) with main (0a86f39)}

[codecov]

Codecov Report

❌ Patch coverage is 99.46809% with 1 line in your changes missing coverage. Please review.
✅ Project coverage is 98.31%. Comparing base (0a86f39) to head (ad94cee).

Files with missing lines	Patch %	Lines
src/nodebpy/export/codegen.py	92.85%	1 Missing ⚠️

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #273   +/-   ##
=======================================
  Coverage   98.31%   98.31%           
=======================================
  Files         106      106           
  Lines       31175    31251   +76     
=======================================
+ Hits        30649    30725   +76     
  Misses        526      526           

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