chore(CHAIN-2771): add central address config and integrate into templates

[jackchuma]

Previously, each template contained its own copy of contract addresses with commented mainnet/sepolia values. This led to:

• Repeated address definitions across templates
• Risk of copy/paste errors or stale addresses
• Manual effort to update addresses across multiple files

This new approach provides a single source of truth for network addresses, reducing maintenance burden and configuration errors.

• Add centralized address configuration files (config/mainnet.env and config/sepolia.env) containing all standard contract and multisig addresses
• Integrate network configs into all setup templates via Makefile includes
• Add NETWORK validation requiring explicit mainnet or sepolia selection
• Remove duplicate hardcoded addresses from individual template .env files
• Move LEDGER_ACCOUNT defaults to network-level .env files

[linear]

CHAIN-2771 Create centralized address registry for templates to eliminate hardcoded address duplication

[cb-heimdall]

✅ Heimdall Review Status

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[Sertug17]

thank you. i wish you good work.

[cb-heimdall]

Review Error for leopoldjoy @ 2026-01-29 23:57:06 UTC
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