Unified branding on node index page style

[nesitor]

Fix: Added new branding logo to unify node index page aesthetic.

Self proofreading checklist

• The new code clear, easy to read and well commented.
• New code does not duplicate the functions of builtin or popular libraries.
• An LLM was used to review the new code and look for simplifications.
• New classes and functions contain docstrings explaining what they provide.
• All new code is covered by relevant tests.
• Documentation has been updated regarding these changes.
• Dependencies update in the project.toml have been mirrored in the Debian package build script packaging/Makefile

Changes

Added new branding logo and unified node type title font style.

How to test

Open the node index page and see the aesthetic improvement.

Screenshot

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 62.95%. Comparing base (e6f2ff7) to head (878b0ea).
Report is 1 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #745   +/-   ##
=======================================
  Coverage   62.95%   62.95%           
=======================================
  Files          71       71           
  Lines        6349     6349           
  Branches      519      519           
=======================================
  Hits         3997     3997           
  Misses       2192     2192           
  Partials      160      160           

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