Well-known plugin registration priorities. Lower numbers register first.
Any number is a valid priority; these constants mark the conventional bands so plugins order themselves predictably relative to first-party middleware (see ARCHITECTURE.md §10 for the middleware priority table).
HIGHEST: number
Runtime and other must-run-first infrastructure.
HIGH: number
Logging, configuration — capabilities most plugins consume.
NORMAL: number
Default band for ordinary capability plugins.
OPENAPI: number
OpenAPI plugin — generates spec after routes are registered.
LOW: number
Plugins that want most capabilities available before they register.
LOWEST: number
Observers that must register after everything else.