chore(docs): update Claude config and architecture diagram

[nanotaboada]

This change is 

Summary by CodeRabbit

• Documentation

  • Updated README architecture documentation with redesigned diagrams, refined section descriptions, and improved narrative clarity to better explain system dependencies and module relationships.
  • Added new reference documentation file.

• Chores

  • Added configuration file specifying default runtime model selection.

[coderabbitai]

No actionable comments were generated in the recent review. 🎉

ℹ️ Recent review info

⚙️ Run configuration

Configuration used: Path: .coderabbit.yaml

Review profile: CHILL

Plan: Pro

Run ID: f146d687-b8ad-47c7-bba9-d0c65687fb69

📥 Commits

Reviewing files that changed from the base of the PR and between b52ab23 and 7f66fb3.

📒 Files selected for processing (4)

• .claude/settings.json
• CLAUDE.md
• CLAUDE.md
• README.md

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Walkthrough

Introduces AI-related configuration by adding .claude/settings.json to specify the Claude model version, creates CLAUDE.md referencing copilot instructions, and updates README.md with a GitHub Copilot badge text change and architectural diagram restructuring (direction and dependency modifications).

Changes

Cohort / File(s)	Summary
AI Configuration .claude/settings.json, CLAUDE.md	New configuration and documentation files for Claude/Copilot setup; settings file specifies default model as claude-sonnet-4-6.
Documentation Updates README.md	GitHub Copilot badge text updated; architecture diagram refactored (RL to BT direction change, dependency arrows restructured), narrative refined for import-time dependencies and layered architecture descriptions.

Estimated code review effort

🎯 2 (Simple) | ⏱️ ~10 minutes

Possibly related PRs

• docs(readme): refresh structure with Mermaid diagram and new sections #510: Also modifies README and adds CLAUDE.md file, with overlapping documentation changes to project setup files.
• docs: restructure AI instruction files #486: Overhauls .github/copilot-instructions.md which is referenced in the new CLAUDE.md file added in this PR.

🚥 Pre-merge checks | ✅ 2

✅ Passed checks (2 passed)

Check name	Status	Explanation
Title check	✅ Passed	The title follows Conventional Commits format, is under 80 characters (58), and accurately describes the main changes: Claude configuration file addition and README architecture diagram updates.
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check.

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✨ Finishing Touches

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Post copyable unit tests in a comment
• Commit unit tests in branch chore/claude-settings

• 🛠️ sync documentation: Commit on current branch
• 🛠️ sync documentation: Create PR
• 🛠️ enforce http error handling: Commit on current branch
• 🛠️ enforce http error handling: Create PR
• 🛠️ idiomatic review: Commit on current branch
• 🛠️ idiomatic review: Create PR
• 🛠️ verify api contract: Commit on current branch
• 🛠️ verify api contract: Create PR

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[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 100.00%. Comparing base (eb8f0ba) to head (6920e1a).
⚠️ Report is 3 commits behind head on master.

Additional details and impacted files

@@            Coverage Diff            @@
##            master      #512   +/-   ##
=========================================
  Coverage   100.00%   100.00%           
=========================================
  Files            3         3           
  Lines          110       110           
=========================================
  Hits           110       110           

Components	Coverage Δ
Services	100.00% <ø> (ø)
Routes	100.00% <ø> (ø)

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[sonarqubecloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarQube Cloud