docs are out of sync with init interactivity and Go version requirements

[hypotyposis]

Summary

The docs are currently out of sync with the implementation in at least two user-visible places.

Mismatches

1. ktext init interactivity

   • README.md says init "walks you through each field interactively"
   • CONTRIBUTING.md says scanner output is "always reviewed interactively"
   • The implementation only enters review mode when -interactive is passed

2. Supported Go version

   • CONTRIBUTING.md says Go 1.22+ required
   • go.mod currently declares go 1.25.0

Expected behavior

The docs should describe the current CLI behavior and the actual supported Go toolchain requirement.

Impact

This creates avoidable confusion for contributors and users trying to follow the documented workflow.