ci: align repository status reporting with main

[acgetchell]

• Treat main as Codecov’s default branch and exclude generated Pages content from CodeQL.
• Add license and documentation badges and shorten the Doxygen workflow label.

Summary by CodeRabbit

• Documentation

  • Added License and Documentation status badges to the README.

• Chores

  • Updated coverage reporting to target the main branch.
  • Restricted CodeQL checks to changes targeting the main branch.
  • Simplified the displayed name of the documentation workflow.

[coderabbitai]

No actionable comments were generated in the recent review. 🎉

ℹ️ Recent review info

⚙️ Run configuration

Configuration used: Path: .coderabbit.yaml

Review profile: ASSERTIVE

Plan: Pro

Run ID: 997d31d3-b881-428b-97dc-1d603f87d948

📥 Commits

Reviewing files that changed from the base of the PR and between 2459016 and 3ff16c3.

📒 Files selected for processing (4)

• .codecov.yml
• .github/workflows/codeql.yml
• .github/workflows/doxygen.yml
• README.md

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Walkthrough

Repository automation now targets main, the Doxygen workflow has a shorter display name, and the README header includes license and documentation badges.

Changes

Repository alignment

Layer / File(s)	Summary
Automation configuration .codecov.yml, .github/workflows/codeql.yml	Codecov explicitly targets main, while CodeQL push and pull request triggers no longer include gh-pages.
Project presentation .github/workflows/doxygen.yml, README.md	The Doxygen workflow is renamed, and License and Documentation badges are added alongside the existing CI badge.

Estimated code review effort: 1 (Trivial) | ~3 minutes

Possibly related PRs

• acgetchell/CDT-plusplus#99: Updates CodeQL workflow branch filters in the same workflow.

Poem

Main becomes the guiding star,
Badges shine from near and far.
Doxygen wears a shorter name,
CodeQL follows the branch-frame.

🚥 Pre-merge checks | ✅ 5

✅ Passed checks (5 passed)

Check name	Status	Explanation
Description Check	✅ Passed	Check skipped - CodeRabbit’s high-level summary is enabled.
Title check	✅ Passed	The title accurately summarizes the CI-related changes, especially aligning reporting and workflows with main.
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check.
Linked Issues check	✅ Passed	Check skipped because no linked issues were found for this pull request.
Out of Scope Changes check	✅ Passed	Check skipped because no linked issues were found for this pull request.

✨ Finishing Touches

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Commit unit tests in branch fix/ci-pages-codecov

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