Copy app (#349)

Fixes #12

src/ipc/ipc_client.ts

@@ -31,6 +31,7 @@ import type {
   ImportAppParams,
   RenameBranchParams,
   UserBudgetInfo,
+  CopyAppParams,
 } from "./ipc_types";
 import type { ProposalResult } from "@/lib/schemas";
 import { showError } from "@/lib/toast";
@@ -465,6 +466,10 @@ export class IpcClient {
     });
   }
 
+  public async copyApp(params: CopyAppParams): Promise<{ app: App }> {
+    return this.ipcRenderer.invoke("copy-app", params);
+  }
+
   // Reset all - removes all app files, settings, and drops the database
   public async resetAll(): Promise<void> {
     await this.ipcRenderer.invoke("reset-all");