chore: refactor complex validation processing logic

[samayer12]

Description

Addresses complexity in validate-processor.ts

End to End Test:
(See Pepr Excellent Examples)

Related Issue

Fixes #1381
Relates to #1248

Type of change

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Other (security config, docs update, etc)

Checklist before merging

• Unit, Journey, E2E Tests, docs, adr added or updated as needed
• Contributor Guide Steps followed

[codecov]

Codecov Report

Attention: Patch coverage is 20.00000% with 4 lines in your changes missing coverage. Please review.

Project coverage is 80.14%. Comparing base (73341c6) to head (62bb1fe).
Report is 1 commits behind head on main.

Files with missing lines	Patch %	Lines
src/lib/validate-processor.ts	20.00%	3 Missing and 1 partial ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #1382      +/-   ##
==========================================
+ Coverage   79.53%   80.14%   +0.60%     
==========================================
  Files          39       39              
  Lines        1818     1818              
  Branches      387      396       +9     
==========================================
+ Hits         1446     1457      +11     
+ Misses        343      333      -10     
+ Partials       29       28       -1     

Files with missing lines	Coverage Δ
src/lib/validate-processor.ts	42.10% <20.00%> (+28.94%)	⬆️