Fix final markdownlint errors and add running pre-commit in CI

[bernhardkaindl]

Cumulative PR: Update docs, fix CI failures and add checking pre-commit in CI

This PR contains 7 commits that are ready for merge now.

The first commit is necessary to resolve CI issues, and the subsequent six PRs will incorporate individual commits on top of this initial commit to address type analysis and documentation problems.

[Copilot]

Pull Request Overview

This PR updates documentation and fixes CI issues by consolidating 7 commits that address type analysis problems, improve documentation formatting, and add pre-commit checking to CI workflows.

• Updates documentation formatting from old-style comments to proper markdown and docstring formats
• Fixes CI configuration by adjusting coverage thresholds and excluding problematic files
• Adds pre-commit checking as a CI job to catch formatting and style issues early

Reviewed Changes

Copilot reviewed 8 out of 12 changed files in this pull request and generated 2 comments.

Show a summary per file

File	Description
xcp/net/ifrename/static.py	Updates documentation formatting from plain text to markdown bullet points and corrects technical acronym capitalization
xcp/net/ifrename/logic.py	Modernizes function documentation from old @param style to proper docstring format with Parameters/Returns/Raises sections
tox.ini	Adjusts test coverage thresholds and removes exclusion for specific file from diff-cover
stubs/pytest_httpserver.pyi	Complete removal of type stub file (134 lines deleted)
docs/source/conf.py	Adds explicit type annotation to exclude_patterns variable
README-Unicode.md	Fixes spelling errors and improves markdown formatting with proper code block language identifiers
.pre-commit-config.yaml	Adds exclusions for documentation files to prevent pre-commit hook conflicts
.github/workflows/main.yml	Adds new pre-commit CI job to validate code formatting and style

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[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ All tests successful. No failed tests found.

Additional details and impacted files

@@          Coverage Diff           @@
##           master    #176   +/-   ##
======================================
  Coverage    83.3%   83.3%           
======================================
  Files          23      23           
  Lines        3347    3347           
======================================
  Hits         2790    2790           
  Misses        557     557           

[Copilot]

Pull Request Overview

Copilot reviewed 4 out of 8 changed files in this pull request and generated no new comments.

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