Simplify handlers & IPC client: move from Result pattern to throwing errors (#120)

src/ipc/handlers/settings_handlers.ts

@@ -4,11 +4,13 @@ import { writeSettings } from "../../main/settings";
 import { readSettings } from "../../main/settings";
 
 export function registerSettingsHandlers() {
+  // Intentionally do NOT use handle because it could log sensitive data from the return value.
   ipcMain.handle("get-user-settings", async () => {
     const settings = readSettings();
     return settings;
   });
 
+  // Intentionally do NOT use handle because it could log sensitive data from the args.
   ipcMain.handle(
     "set-user-settings",
     async (_, settings: Partial<UserSettings>) => {