Consolidates the GCP cluster configuration TUI (formerly etc/config.py)
into knoe/config.py as a __main__ entrypoint, resolving the naming
collision with the root-level installer utilities module. Adds config.sh
as a thin shell launcher at the project root. Also excludes .claude/
worktree directories from git and IDE indexing.
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
