WIP: Nhsieh/sidenavbarv2

[nhsiehgit]

Current state:

https://github.com/user-attachments/assets/2176ffd2-053e-4f0f-a41e-3c09ee11e1a9

[codecov[bot]]

Codecov Report

All modified and coverable lines are covered by tests :white_check_mark:

:white_check_mark: All tests successful. No failed tests found.

Additional details and impacted files

@@           Coverage Diff           @@
##           master   #76577   +/-   ##
=======================================
  Coverage   78.16%   78.16%           
=======================================
  Files        6901     6901           
  Lines      307088   307086    -2     
  Branches    52895    52897    +2     
=======================================
+ Hits       240024   240046   +22     
+ Misses      60635    60611   -24     
  Partials     6429     6429           

[natemoo-re]

Closing in favor of #76868