Add automated scripts for Charon replace-operator ceremony

[pinebit]

Summary

Introduces a suite of automation scripts to streamline the charon alpha edit replace-operator workflow. This initial version supports the Lodestar validator client, handling the orchestration, anti-slashing database (ASDB) migration, and configuration swapping with built-in safety checks.

Key Changes

Orchestration: Added replace_operator.sh to guide operators through the ceremony (supports both continuing & new operator roles).
ASDB Management: Added export_asdb.sh and import_asdb.sh to handle Lodestar's slashing protection data using the EIP-3076 interchange format.
Library Refactor: Moved update-anti-slashing-db.sh to lib to serve as a reusable utility for public key translation.
Documentation: Added README.md with detailed workflows, example sessions, and troubleshooting guides.

Features

Interactive & CLI Modes: Scripts support full automation via flags or guided interactive prompts.
Safety: Automatically creates .charon backups before modifying state and prevents overwriting existing data.
Docker Integration: Uses ephemeral containers for the ceremony and proper entrypoint overrides for Lodestar management commands.

Usage

See README.md for complete instructions.

# Run interactively
./scripts/edit/lodestar/replace_operator.sh

# Or via CLI flags
./scripts/edit/lodestar/replace_operator.sh --role continuing --old-enr ... --new-enr ...

[Copilot]

Pull request overview

This PR adds a new bash script to update an EIP-3076 anti-slashing database JSON file by mapping public keys from a source cluster-lock.json to a target cluster-lock.json. The script is designed to support the workflow where validators are edited via an edit command, producing new cluster-lock files with updated validator configurations.

Key changes:

• Implements pubkey lookup and replacement logic using jq for JSON manipulation
• Validates cluster-lock structure and ensures target has sufficient validators/shares
• Provides comprehensive error handling and validation throughout the update process

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[Copilot]

Pull request overview

Copilot reviewed 1 out of 1 changed files in this pull request and generated 6 comments.

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