feat: add manual PI WEB update checks

src/plugin-api.ts

@@ -99,6 +99,8 @@ export interface PluginRuntimeContext {
   refreshFiles: () => void | Promise<void>;
   refreshGit: () => void | Promise<void>;
   refreshAppData: () => void | Promise<void>;
+  /** Force a fresh PI WEB release check on the selected machine. Optional for compatibility with older hosts. */
+  checkForPiWebUpdates?: () => void | Promise<void>;
   reloadPage: () => void;
   startSession: () => void | Promise<void>;
   archiveSession: () => void | Promise<void>;