fix: more robustness in http handling

[jiacai2050]

No description provided.

[jiacai2050]

/gemini review

[Copilot]

Pull Request Overview

This PR increases the robustness of HTTP handling in the utility module while also removing two GitHub Actions workflows.

• Enhances HTTP error handling with a custom HTTPAccessError and the http_get helper
• Refactors functions to use http_get (fetch_index and download_and_check) and updates the default command in main
• Removes semantic-pr and release workflows from the repository

Reviewed Changes

Copilot reviewed 3 out of 3 changed files in this pull request and generated no comments.

File	Description
lib/utils.py	Implements custom HTTP error handling and refactors HTTP calls using http_get
.github/workflows/semantic-pr.yml	Removes semantic PR workflow
.github/workflows/release.yml	Removes release workflow

Comments suppressed due to low confidence (5)

lib/utils.py:37

• Consider adding a docstring to HTTPAccessError to provide more context for its usage and the details it encapsulates.

class HTTPAccessError(Exception):

lib/utils.py:45

• Consider adding a docstring to http_get to clarify its purpose and its handling of HTTP errors via HTTPAccessError.

def http_get(url, timeout=HTTP_TIMEOUT):

lib/utils.py:128

• Consider adding a comment to clarify why the default command was changed to 'all-versions', as this may affect user expectations.

    command = args[0] if args else "all-versions"