docs: add architecture docs (en)

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📥 Commits

Reviewing files that changed from the base of the PR and between f18849b and f12f458.

📒 Files selected for processing (1)

• docs/ru/13-architecture.md (1 hunks)

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❌ PR Title Validation Failed
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Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 71.84%. Comparing base (f18849b) to head (f12f458).

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #115      +/-   ##
==========================================
- Coverage   71.86%   71.84%   -0.02%     
==========================================
  Files         200      200              
  Lines       18078    18078              
==========================================
- Hits        12991    12988       -3     
- Misses       4367     4369       +2     
- Partials      720      721       +1     

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