fix: resolve all SonarCloud code quality issues

[ThomasParenteau]

Objective:
Address all issues identified by SonarCloud static analysis to improve code quality and maintainability.

Acceptance Criteria:

• 1. All critical and major SonarCloud issues resolved
• 2. Code duplication reduced to acceptable levels
• 3. Security vulnerabilities addressed
• 4. Code smell issues fixed
• 5. Documentation coverage improved
• 6. SonarCloud quality gate passes

Technical Details:

• Environment: Entire codebase, CI/CD pipeline
• Components: Code analysis, Refactoring, Documentation
• Resources: SonarCloud reports, Code quality metrics, CI integration

Dependencies: CI/CD infrastructure