GimoAdapter - Signalium

Source: packages/contracts/src/yield/GimoAdapter.sol Single-purpose, immutable. One adapter per Treasury keeps accounting isolated.

Why a per-market adapter

Gimo’s unstake(lsdAmount) queues a withdrawal ticket against the caller’s address. If two markets shared an adapter, their unbonding queues would commingle and accounting would have to disambiguate. A fresh adapter per market sidesteps that — each adapter sees only its own tickets.

Lifecycle

Call	Effect
`constructor(treasury, stakePool, referrer)`	Stores immutable wiring; max-approves `st0G` to `stakePool` so subsequent `unstake()` works
`deposit() payable` (only treasury)	Calls `stakePool.stake{value: msg.value}(referrer)`, returns minted shares
`requestWithdraw(nativeAmount)` (only treasury)	Burns `ceil(nativeAmount × 1e18 / rate)` `st0G`, books `_pendingClaim += nativeAmount`. If the request overshoots the position by rounding, drains the position instead of reverting (caller learns the actual amount via `pendingClaim()`)
`claim()` (only treasury)	Calls `stakePool.withdraw()`, forwards realized native to the Treasury, reconciles `_pendingClaim` against actual payout
`syncLsdApproval()` (permissionless)	Re-runs the max-approve. Useful if Gimo upgrades and rotates the `lsdToken` proxy

totalAssets vs pendingClaim

function totalAssets() returns uint256 {
    return shares() × stakePool.getRate() / 1e18;  // still earning in Gimo
}
function pendingClaim() returns uint256 {
    return _pendingClaim;                          // queued, no longer earning
}

Callers (Treasury) sum the two for the full deliverable amount. Single-purpose accessors avoid the trap of one number meaning two things mid-unstake.

Mainnet probe

Discovered by cast call against the deployed Gimo proxy at 0xAc06d1Df…35aF:

Method	Returns	What it means
`getRate()`	`uint256` (1e18-scaled)	st0G → 0G exchange rate
`eraSeconds()`	`86400`	1 day per era
`unbondingDuration()`	`3`	3 eras = ~3 day unbonding
`minStakeAmount()`	`1e16` (0.01 0G)	Smallest stake Gimo accepts
`lsdToken()`	`0x7bBC…1404`	st0G ERC20

The 4 fork tests in GimoAdapter.fork.t.sol exercise the full deposit → unstake → wait → claim round-trip against this real proxy.