feat: shared toolbar, footer and host dot pieces for plugin UI

packages/plugin-sdk/src/frontend.ts

@@ -656,7 +656,7 @@ export interface HostProtocolContribution {
   quickConnect?: { showDomain?: boolean };
 }
 
-export interface HostBadgeContribution {
+export interface HostRowContribution {
   id: string;
   when: (host: PluginHostRecord) => boolean;
   component: ComponentType<{ host: PluginHostRecord }>;
@@ -664,11 +664,32 @@ export interface HostBadgeContribution {
   order?: number;
 }
 
+/** A problem shown as the host row's status dot. */
+export interface HostDot {
+  tone: "bad" | "warn";
+  label: string;
+}
+
+export interface HostBadgeContribution {
+  id: string;
+  when: (host: PluginHostRecord) => boolean;
+  /** Drawn as is on the row. Leave out for a badge that is only a dot. */
+  component?: ComponentType<{ host: PluginHostRecord }>;
+  /**
+   * A hook that returns a problem or null. Every plugin's dots merge into one
+   * dot on the row, with the worst tone and each label in its tooltip, so two
+   * plugins reporting the same host never draw two dots. Core 26.11.1+.
+   */
+  useDot?: (host: PluginHostRecord) => HostDot | null;
+  /** Lower comes first. Ties sort by id. */
+  order?: number;
+}
+
 /** The dot or stripe that shows a host's status on its row. */
-export type HostStatusIndicatorContribution = HostBadgeContribution;
+export type HostStatusIndicatorContribution = HostRowContribution;
 
 /** A control in the host editor's toolbar. */
-export type HostEditorToolbarItemContribution = HostBadgeContribution;
+export type HostEditorToolbarItemContribution = HostRowContribution;
 
 export interface HostSectionProps {
   host: PluginHostRecord;