feature (artboards): define exportable design spaces

[lallmon]

No description provided.

[codecov]

Codecov Report

❌ Patch coverage is 79.41176% with 35 lines in your changes missing coverage. Please review.
✅ Project coverage is 91.86%. Comparing base (4a866d1) to head (adc5ead).
⚠️ Report is 1 commits behind head on main.

Files with missing lines	Patch %	Lines
src/lucent/scene_graph_renderer.py	54.83%	14 Missing ⚠️
src/lucent/canvas_model.py	76.08%	11 Missing ⚠️
src/lucent/document_manager.py	14.28%	6 Missing ⚠️
src/lucent/item_schema.py	87.50%	2 Missing ⚠️
src/lucent/model_geometry.py	85.71%	1 Missing ⚠️
src/lucent/texture_cache.py	97.50%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #173      +/-   ##
==========================================
- Coverage   92.38%   91.86%   -0.53%     
==========================================
  Files          25       25              
  Lines        3873     3969      +96     
==========================================
+ Hits         3578     3646      +68     
- Misses        295      323      +28     

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