feat: add sidebar

web/src/plugins/index.ts

@@ -1,4 +1,5 @@
 export { exposePluginSDK, getPluginComponent, onPluginRegistered, getRegisteredCount } from "./registry";
+export { PluginPage } from "./PluginPage";
 export { usePlugins } from "./usePlugins";
 export { PluginSlot, KNOWN_SLOT_NAMES, registerSlot, getSlotEntries, onSlotRegistered, unregisterPluginSlots } from "./slots";
 export type { KnownSlotName } from "./slots";