Opencode-power-pack ports Claude skills to OpenCode

This is less a brand-new product than a useful compatibility layer: it turns Anthropic’s best ideas into a portable package that fits OpenCode’s skill system cleanly.

• –The main value is format translation: `commands/` and `agents/` become portable skills, so the workflows survive the Claude Code to OpenCode jump.
• –The pack is opinionated in a good way for local models, especially around review tasks, where it adds cross-checks, multiple reviewer angles, and concrete reproduction requirements.
• –The slash-command mirroring is practical because it removes the “load this skill first” indirection that local models sometimes mishandle.
• –The plugin-loader approach via `config.skills.paths.push()` is noteworthy for OpenCode users who want a low-friction install path and native skill discovery.
• –This will matter most to power users already living in the OpenCode ecosystem, not general developers looking for a turnkey app.