ci: restore doc generation on release only

Restore doc generation steps in release.yml that run after package
publish. Remove the daily docs-sync.yml workflow - docs should only
be regenerated when we release.

Author: claude

.github/workflows/docs-sync.yml

@@ -40,7 +40,6 @@ jobs:
           title: 'ci: Version Packages'
         env:
           GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
-          NPM_TOKEN: ${{ secrets.NPM_TOKEN }}
       - name: Generate Docs
         if: steps.changesets.outputs.published == 'true'
         run: pnpm generate-docs