使用 mustache 1.1.3 的 jazzy 0.15.4 在启动时出现错误: `未定义 'map' 方法,对 Pathname 实例`

Since mustache 1.1.3 was published (2026-08-20), every `jazzy` invocation aborts before doing any work. jazzy's dependency is `mustache (~> 1.1)`, so a fresh `bundle install` or `bundle update` picks the new version up with no change on the jazzy side.