Plugins that still want a class for state use a private constructor,
an async static fromContext and a static WeakMap lookup, which also
replaces controller.plugins.get() for cross-plugin access. Check
loadedPlugins with Set.has on the info from pluginInfos.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Covers the plugin API changes between 2.0.0-alpha.27 and 2.0.0: ESM,
entrypoint functions and hooks, loadedPlugins, permissions on the
plugin declaration, the ctl renames, staticRoot and optional peer
dependencies.
Document that from 2.0 major versions contain breaking changes for end
users while minor versions may contain breaking changes for the plugin
API, and fix stale examples and names in writing-plugins.md and
managing-a-cluster.md.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>