- Pin `@types/bun` to `^1.3.14` for reproducible builds instead of using `latest`
- Update `tsconfig.json` with stricter type-checking flags and reorganize compiler options
- Refactor `initConfig` to DRY up the model default logic and add a null guard before process exit
Replace Bun.argv with process.argv, Bun.file() with fs/promises,
Bun.stringWidth with string-width package, and Bun.wrapAnsi with
wrap-ansi package for better compatibility.
