Improve test coverage

[tony]

Summary by Sourcery

Documentation:

• Adds a comprehensive document describing the VCSPull project, its architecture, configuration, and usage.

[sourcery-ai[bot]]

Reviewer's Guide by Sourcery

This pull request adds a comprehensive 'about.md' document to the 'notes' directory. This document provides a detailed overview of the VCSPull project, covering its purpose, architecture, configuration, codebase structure, development practices, tooling, and usage.

Class Diagram for VCSPull Configuration

classDiagram
    class ConfigFile {
        +str path
        +dict repos
    }
    class Repository {
        +str url
        +dict remotes
    }
    class VCSClient {
        +str vcs_type
        +str url
        +sync()
    }

    ConfigFile -- Repository : contains
    Repository -- VCSClient : uses

File-Level Changes

Change	Details	Files
Added a comprehensive project analysis document.	Introduced a detailed overview of the VCSPull project. Described the core purpose of VCSPull, including simplifying repository management and enabling declarative configuration. Outlined the configuration-driven architecture and key design patterns such as Factory, Command, Facade, and Template Method. Explained the YAML/JSON configuration format with examples. Detailed the codebase structure, including core components like Configuration Management, CLI Interface, and Type System. Listed the project's dependencies, including libvcs, PyYAML, and colorama. Summarized the development practices, such as strong type hints, comprehensive test coverage, and modern Python features. Described the project's tooling, including uv, Ruff, Mypy, and Pytest. Documented the configuration file locations and usage patterns. Provided insights into the project's evolution and architecture.	notes/2025-03-08 - about.md

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[codecov[bot]]

Codecov Report

Attention: Patch coverage is 22.46521% with 780 lines in your changes missing coverage. Please review.

Project coverage is 23.92%. Comparing base (924ae0f) to head (3f9e9d4).

Files with missing lines	Patch %	Lines
src/vcspull/operations.py	8.83%	227 Missing :warning:
src/vcspull/cli/commands.py	10.71%	200 Missing :warning:
src/vcspull/vcs/mercurial.py	17.74%	102 Missing :warning:
src/vcspull/vcs/git.py	18.33%	98 Missing :warning:
src/vcspull/vcs/svn.py	21.35%	81 Missing :warning:
src/vcspull/vcs/base.py	36.73%	31 Missing :warning:
src/vcspull/config/loader.py	68.42%	19 Missing and 5 partials :warning:
src/vcspull/_internal/logger.py	21.05%	15 Missing :warning:
src/vcspull/config/models.py	95.23%	2 Missing :warning:

Additional details and impacted files

@@             Coverage Diff             @@
##           master     #462       +/-   ##
===========================================
- Coverage   78.98%   23.92%   -55.07%     
===========================================
  Files           8       10        +2     
  Lines         414     1045      +631     
  Branches       85      150       +65     
===========================================
- Hits          327      250       -77     
- Misses         52      789      +737     
+ Partials       35        6       -29     

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