Add GitHub release creation to /publish skill

The post-publish step was only creating git tags, not GitHub releases.
Added `gh release create --generate-notes` so releases appear on the
GitHub releases page automatically.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

Author: MajorTal

.claude/commands/publish.md

@@ -34,6 +34,7 @@ Stage all three files and commit: `git add package.json cli/package.json package
 
 1. `git push` to push the version bump commit.
 2. Create a git tag: `git tag v<new_version> && git push --tags`
-3. Print a summary of what was published, including the new version and npm URLs:
+3. Create a GitHub release from the tag using `gh release create v<new_version> --generate-notes`. This auto-generates release notes from commits since the last release.
+4. Print a summary of what was published, including the new version and npm URLs:
    - https://www.npmjs.com/package/run402-mcp
    - https://www.npmjs.com/package/run402