desktop: add api to delete files

apps/desktop/src/api/os-integration.ts

@@ -31,6 +31,7 @@ import { observable } from "@trpc/server/observable";
 import { AssetManager } from "../utils/asset-manager";
 import { isFlatpak } from "../utils";
 import { setupDesktopIntegration } from "../utils/desktop-integration";
+import { rm } from "fs/promises";
 
 const t = initTRPC.create();
 
@@ -134,10 +135,13 @@ export const osIntegrationRouter = t.router({
     .input(z.object({ filePath: z.string() }))
     .query(({ input }) => {
       const { filePath } = input;
-      if (!filePath) return;
       return resolvePath(filePath);
     }),
 
+  deleteFile: t.procedure.input(z.string()).query(async ({ input }) => {
+    await rm(input);
+  }),
+
   showNotification: t.procedure
     .input(NotificationOptions)
     .query(({ input }) => {