fix(marketplace): no bloquear uninstall por requires opcionales

[akromicc]

Summary

• `compatibility.requires[].optional: true` (POS → caja) no debe impedir desinstalar Caja: POS cobra sin ese addon.
• `extractRequires` ya no snapshottea peers opcionales; el upgrade refresca el snapshot; el 409 deduplica filas duplicadas de `marketplace_installations`.

Test plan

• Installed POS + Caja → desinstalar Caja sin cascada (200, POS sigue).
• Desinstalar customers con POS instalado sigue 409 (require duro).
• Dialog de dependientes no lista POS dos veces si hay filas duplicadas.

[coderabbitai]

Important

• 🔍 Trigger review

This repository does not receive automatic reviews because it has fewer than 10 stars.

⚙️ Run configuration

Configuration used: defaults

Review profile: CHILL

Plan: Pro Plus

Run ID: 313ab07e-1129-460b-b415-8aea4d4f174a

---

Thanks for using CodeRabbit! It's free for OSS, and your support helps us grow. If you like it, consider giving us a shout-out.

❤️ Share

• X
• Mastodon
• Reddit
• LinkedIn

_{Comment @coderabbitai help to get the list of available commands.}