refactor (editing): move towards a node editor tool

[lallmon]

No description provided.

[codecov]

Codecov Report

❌ Patch coverage is 93.54839% with 2 lines in your changes missing coverage. Please review.
✅ Project coverage is 92.09%. Comparing base (3899e53) to head (6f8bf71).
⚠️ Report is 1 commits behind head on main.

Files with missing lines	Patch %	Lines
src/lucent/canvas_model.py	88.88%	1 Missing ⚠️
src/lucent/edit_context.py	95.45%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #169      +/-   ##
==========================================
+ Coverage   92.03%   92.09%   +0.06%     
==========================================
  Files          23       24       +1     
  Lines        3691     3696       +5     
==========================================
+ Hits         3397     3404       +7     
+ Misses        294      292       -2     

☔ View full report in Codecov by Sentry.
📢 Have feedback on the report? Share it here.

🚀 New features to boost your workflow:

• ❄️ Test Analytics: Detect flaky tests, report on failures, and find test suite problems.