[Contracts] deploy.ts points MultisigGovernance at LoanManager, the only contract lacking set_admin, so finalize_admin_transfer traps and governance is inert

[grantfox-oss]

Telegram (ask questions / claim the issue here first): https://t.me/+DOylgFv1jyJlNzM0

Why this matters

MultisigGovernance.finalize_admin_transfer cross-invokes symbol set_admin on its target (contracts/multisig_governance/src/lib.rs:409-413). scripts/deploy.ts:265 initializes governance with target = LoanManager. But LoanManager exposes only propose_admin/accept_admin and has NO set_admin (only RemittanceNFT and LendingPool implement set_admin). The cross-contract call to a non-existent function traps, so the multisig can never transfer LoanManager's admin - the governance contract deployed by the script governs nothing.

Acceptance criteria

• Either add pub fn set_admin to LoanManager matching the signature governance invokes, or change finalize_admin_transfer to call the target's propose_admin/accept_admin flow, or repoint the deploy target to a contract that exposes set_admin
• Add a regression test exercising governance.finalize against the chosen real target
• deploy.ts target selection is documented to match the contract's admin API

Files to touch

• scripts/deploy.ts
• contracts/multisig_governance/src/lib.rs
• contracts/loan_manager/src/lib.rs

Out of scope

• Transferring contract admin to the governance address at deploy time
• delay_seconds bound