Add interactive shell helper scripts to streamline local development:
- openclaw-helpers.sh: Zsh functions for repo navigation, running nodes,
wallet management, and log tailing
- install.sh: Installer script that backs up existing config and sources
helpers from .zshrc
- README.md: Documentation for available commands
- NEXT_STEPS.md: Community contribution checklist
Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>