Harden security pool fork child validation

[KillariDev]

Summary

• Refactors fork migration logic to share common forker base behavior and isolate vault-migration helpers.
• Adds stricter child deployment validation so forked child pools must match the expected parent, factory, universe, forker, and truth auction.
• Updates fork migration and attack-mock tests to cover the new validation path and prevent child-reuse attacks.
• Refreshes mainnet deployment addresses for the deployed fork-related contracts.

Testing

• bun run tsc
• bun run test
• bun run format
• bun run check
• bun run knip