Building a Forge plugin

Moved. The plugin guide now lives in the VitePress site:

• Plugins — docs/automation/plugins.md
• API Keys & scopes — docs/automation/api-keys.md
• Webhooks — docs/automation/webhooks.md
• MCP Tools — docs/reference/mcp.md

Run pnpm docs:dev and open http://localhost:5181/docs/ to read it rendered.