ucon#160: graph-local name resolution

[withtwoemms]

closes #160

[codecov-commenter]

Codecov Report

❌ Patch coverage is 59.09091% with 18 lines in your changes missing coverage. Please review.
✅ Project coverage is 88.18%. Comparing base (9eed284) to head (8260f30).

Files with missing lines	Patch %	Lines
ucon/graph.py	62.16%	13 Missing and 1 partial ⚠️
ucon/units.py	33.33%	3 Missing and 1 partial ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #163      +/-   ##
==========================================
+ Coverage   87.17%   88.18%   +1.00%     
==========================================
  Files          13       13              
  Lines        2269     2310      +41     
  Branches      467      476       +9     
==========================================
+ Hits         1978     2037      +59     
+ Misses        193      165      -28     
- Partials       98      108      +10     

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