一直没找到一个合适的 Private Info 解决方案（passwords, recovery codes, ssh keys, etc)，市面上的 app 基本都是功能太多又太贵，于是让 Claude Code 实现了一个，居然一下就搞定！（Opus 4.6 + thinking effort high）

init an electron project with react, tailwind, shadcn, vite, lucide-icons

create an 1Password like app that can encrypt a text file by user set password.

- while open the app, show a default page with 3 options:
  - enter the password for last opened file.
  - create a local file and password.
  - provide a local file and user needs to enter the right password to open it.

after user set / enter the right password, its essentially markdown content, that will be auto saved on change.

use shadcn for design. make it clean and elegant.