Exclude more documentation files from CI

[rolandwalker]

Description

Since #1556 needlessly ran the test suite.

Checklist

• I added this contribution to the changelog.md file.
• I added my name to the AUTHORS file (or it's already there).
• To lint and format the code, I ran

  uv run ruff check && uv run ruff format && uv run mypy --install-types .

[github-actions]

Findings

1. CI can be skipped for test data changes
   Adding **.txt to paths-ignore will skip CI when .txt test fixtures change. This repo has .txt files under tests, so changes that can affect behavior won’t trigger CI. Example fixtures: test/features/fixture_data/help_commands.txt, test/features/fixture_data/help.txt, test/test.txt.
   Action: Narrow the ignore patterns to documentation-only paths (e.g. doc/**/*.txt, **/LICENSE.txt) or explicitly allow test paths. This change applies to all three workflows.
   Files: .github/workflows/ci.yml:6-8 (same change in .github/workflows/lint.yml and .github/workflows/typecheck.yml).

No other correctness or security concerns found.

Next steps

1. Tighten the paths-ignore patterns to exclude only documentation .txt/.rst, not test fixtures.
2. If you want, I can propose exact glob patterns based on your doc layout.

[github-actions]

No findings.

These changes only expand paths-ignore in workflow triggers. I don’t see correctness, security, or test gaps introduced by this PR.

If you want an extra safety net, consider whether any documentation-only changes should still trigger CI (e.g., docs-related build checks), but that’s a policy choice rather than a bug.

[github-actions]

No blocking issues found in the PR.

Notes

1. paths-ignore only excludes doc/**/*.txt and doc/**/*.rst plus a few root docs. If the intent is to skip CI for other doc assets (e.g., doc/**/*.png, doc/**/*.svg, or screenshots/**), consider adding those patterns too.

Tests

1. Not applicable for workflow-only changes.

If you want, I can suggest a fuller ignore list based on the current repo doc assets.