[Template Sync] fix: update sync workflow to use .mcp.json for cursor repo#15

liukatkat merged 3 commits intomainsemgrep/cursor-plugin:mainfrom

template-sync/23c3c994f3a1e3d4135c78e962a05a1c8ba8bb50semgrep/cursor-plugin:template-sync/23c3c994f3a1e3d4135c78e962a05a1c8ba8bb50Copy head branch name to clipboard