chore: update .gitignore and clean up README structure

[AtaCanYmc]

No description provided.

[Copilot]

Pull request overview

This PR adjusts the manual release workflow’s logic for detecting and updating the version field in pyproject.toml.

Changes:

• Loosened the version field detection to allow leading whitespace.
• Updated the Perl replacement regex to allow optional leading whitespace before version.

Comments suppressed due to low confidence (1)

.github/workflows/release.yml:63

• The PR title mentions updating .gitignore and README structure, but this change is to the release workflow’s version-bump logic. If this is intentional, consider updating the PR title/description to reflect the workflow change so it’s easier to review and track in history.

      - name: Bump version in pyproject.toml
        id: bump
        run: |
          set -e
          NEW_VERSION="${{ github.event.inputs.version }}"
          FILE=pyproject.toml
          if ! grep -q '^\s*version' "$FILE"; then
            echo "pyproject.toml does not contain a version field" >&2
            exit 1
          fi
          # replace version = "..." (allow optional leading whitespace)
          perl -0777 -pe "s/^\s*version\s*=\s*\"[0-9]+\.[0-9]+\.[0-9]+(?:[-+][^\"]*)?\"/version = \"${NEW_VERSION}\"/m" -i "$FILE"

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[Copilot]

grep -q '^\s*version' won’t treat \s as whitespace in GNU grep (BRE/ERE); it matches a literal s, so this check may incorrectly fail even when version = ... exists. Use a POSIX character class (e.g. ^[[:space:]]*version) or switch to grep -P if you specifically want \s.

Suggested change

	if ! grep -q '^\s*version' "$FILE"; then
	if ! grep -q '^[[:space:]]*version' "$FILE"; then

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