Refactor Renewalinfo class

[grindsa]

This PR delivers a refactor of the Renewalinfo subsystem, focusing on code clarity, error handling, configuration flexibility, and test coverage. The changes modernize the codebase, improve maintainability, and ensure robust handling of edge cases.

Major Changes & Architectural Improvements

• Refactored the Renewalinfo class for better separation of concerns and maintainability.
• Centralized configuration management with robust parsing and validation.
• Improved error handling and logging throughout all renewal info operations.
• Enhanced docstrings and inline documentation for maintainability.

[Copilot]

Pull request overview

This PR refactors the Renewalinfo subsystem to improve code organization, maintainability, and testability through separation of concerns and the introduction of design patterns.

Key Changes:

• Introduced RenewalinfoConfig dataclass to centralize configuration management
• Created RenewalinfoRepository class to encapsulate all database access logic
• Refactored Renewalinfo class methods with clearer, more descriptive names
• Completely rewrote test suite with comprehensive coverage for all three classes

Reviewed changes

Copilot reviewed 4 out of 4 changed files in this pull request and generated 16 comments.

File	Description
acme_srv/renewalinfo.py	Core refactor implementing Repository and Config patterns, renamed methods for clarity, improved error handling
test/test_renewalinfo.py	Complete test rewrite with separate test classes for Config, Repository, and main Renewalinfo handler
docs/architecture/renawalinfo-architecture.md	New architecture documentation describing design patterns and component structure
docs/architecture/authorization-architecture.md	Minor formatting improvements adding blank lines after class definitions

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