update readme and diagrams

[bestksl]

Description

A brief description of the change.

Related Issues

Fixes #123

Checklist

• I have read the Contributing Guide
• My code follows the style guidelines of this project
• I have tested my changes
• I have updated the documentation (if needed)

[codecov]

Codecov Report

❌ Patch coverage is 0% with 190 lines in your changes missing coverage. Please review.
✅ Project coverage is 5.41%. Comparing base (b0eec4a) to head (42866b3).
⚠️ Report is 16 commits behind head on main.

Files with missing lines	Patch %	Lines
internal/core/spec/etcd_store.go	0.00%	171 Missing ⚠️
internal/bootstrap/bootstrap.go	0.00%	8 Missing ⚠️
internal/core/shimlet/shimlets/k8s_shimlet.go	0.00%	6 Missing ⚠️
internal/core/spec/memory_store.go	0.00%	3 Missing ⚠️
...core/goal/goalset/opensource_llm_deploy_goalset.go	0.00%	2 Missing ⚠️

Additional details and impacted files

@@           Coverage Diff            @@
##            main     #67      +/-   ##
========================================
- Coverage   5.93%   5.41%   -0.53%     
========================================
  Files         23      24       +1     
  Lines       1820    1996     +176     
========================================
  Hits         108     108              
- Misses      1707    1883     +176     
  Partials       5       5              

Flag	Coverage Δ
unittests	5.41% <0.00%> (-0.53%)	⬇️

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