Fix npm-publish tag check to accept capital-V tags (#31)

The release tag check stripped only a lowercase 'v', so a tag like V17.0.0
failed against package.json 17.0.0. Strip a leading v OR V.


Claude-Session: https://claude.ai/code/session_016JWn5jRD5tcEFKrubjQ6Px

Co-authored-by: Claude <noreply@anthropic.com>

.github/workflows/npm-publish.yml

@@ -36,7 +36,7 @@ jobs:
       - name: Verify release tag matches package.json version
         if: github.event_name == 'release'
         run: |
-          TAG="${GITHUB_REF_NAME#v}"
+          TAG="${GITHUB_REF_NAME#[vV]}"   # strip a leading v or V (v17.0.0 / V17.0.0)
           PKG="$(node -p "require('./package.json').version")"
           echo "release tag: $TAG | package.json: $PKG"
           if [ "$TAG" != "$PKG" ]; then