Submit Factory Droid output to Factory plugin marketplace

[chubes4]

Parent: #45

Goal

Submit the generated Build with WordPress Factory Droid output to Factory's plugin marketplace path.

Evidence

• Official docs: https://docs.factory.ai/cli/configuration/plugins
• Factory documents plugin marketplaces, /plugins, and CLI marketplace management.
• Official marketplace: Factory-AI/factory-plugins.
• Generated output: plugins/factory/.

Tasks

• Confirm whether submission should target the official Factory-AI/factory-plugins marketplace or an Automattic-owned marketplace repo first.
• Validate plugins/factory/ against Factory's plugin manifest and structure requirements.
• Prepare submission PR or marketplace repository update.
• Record the submission URL/status back in Epic: submit Build with WordPress outputs to official agent marketplaces #45.