Add Superpowers Chinese marketplace plugin

Constraint: Keep the official Superpowers plugin available under its existing ID while publishing the localized fork with a distinct ASCII ID.

Rejected: Reusing the upstream superpowers manifest name | It collides with the official marketplace entry.

Confidence: high

Scope-risk: narrow

Directive: Continue syncing this plugin from AreChen/superpowers-zh and preserve hooks: {}.

Tested: Marketplace validator, Codex local install/list/remove, KeyInfo adapter tests, upstream Codex manifest and package checks except its platform-specific tar epoch assertion.

README.md

@@ -15,6 +15,8 @@ codex plugin add <plugin-id>@eapil-skill-market
 
 使用 `codex plugin list --marketplace eapil-skill-market` 输出里的精确 `plugin-id`。不要猜测中文名、翻译名或 display name。
 
+同一插件的原版与本地化版本可能同时存在。它们的展示名可以相近，但 `plugin-id` 必须不同；安装前应通过列表确认语言版本和精确 ID。
+
 安装公共 skill 或第三方 Codex plugin 时也使用同一套命令；具体可安装项以 `codex plugin list --marketplace eapil-skill-market` 的实时输出为准。
 
 有些插件是 skill 集合，安装一个 `plugin-id` 后会同时提供多个 `$skill-name`。可安装项和安装后可用的 skills 均以 Codex 的实际输出为准。