Canonical per-plugin identity — color token + Lucide icon.
Mirrors the featherbit design system's pluginMeta map.
Remarks
Keys match the plugin type names registered by create_plugin in
src/plugins/mod.rs, plus the pseudo node types listener and client.
The three auth plugins deliberately share one color token.
Canonical per-plugin identity — color token + Lucide icon. Mirrors the featherbit design system's pluginMeta map.