chore: add socials image, change favicon to blue for contrast

[tasosbit]

ℹ Overview

• add socials image. not referenced by useful to have somewhere other than "on my machine"
• change favicon color to algo blue for contrast

✅ Acceptance:

• Pre-commit checks pass

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 35.01%. Comparing base (2ef13bd) to head (684a252).
Report is 68 commits behind head on main.

❗ There is a different number of reports uploaded between BASE (2ef13bd) and HEAD (684a252). Click for more details.

HEAD has 2 uploads less than BASE

Flag	BASE (2ef13bd)	HEAD (684a252)
	3	1

Additional details and impacted files

@@             Coverage Diff             @@
##             main     #126       +/-   ##
===========================================
- Coverage   47.32%   35.01%   -12.31%     
===========================================
  Files          75       76        +1     
  Lines        5881     6109      +228     
===========================================
- Hits         2783     2139      -644     
- Misses       2891     3867      +976     
+ Partials      207      103      -104     

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