feat(plugins): support custom plugin icons

apps/desktop/src/lib/plugins/pluginIconResolver.ts

@@ -0,0 +1,23 @@
+import * as api from "@/lib/backend/api";
+import type { InstalledPlugin } from "@/types/database";
+
+let installedPluginsPromise: Promise<InstalledPlugin[]> | null = null;
+
+function installedPlugins(): Promise<InstalledPlugin[]> {
+  installedPluginsPromise ||= api.listPlugins().catch((error) => {
+    installedPluginsPromise = null;
+    throw error;
+  });
+  return installedPluginsPromise;
+}
+
+export function clearPluginIconCache() {
+  installedPluginsPromise = null;
+}
+
+export async function resolvePluginIcon(pluginId: string, contributionId?: string): Promise<string | undefined> {
+  const plugin = (await installedPlugins()).find((entry) => entry.manifest.id === pluginId);
+  if (!plugin) return undefined;
+  const contribution = contributionId ? plugin.manifest.contributions?.find((entry) => entry.id === contributionId) : undefined;
+  return (contribution && "icon" in contribution ? contribution.icon : undefined) || plugin.manifest.icon;
+}