# SignatureRedeemQueue

### Purpose

`SignatureRedeemQueue` extends `SignatureQueue` to enable **instant share redemption** from a vault without the usual delay of on-chain oracle processing. It leverages **off-chain consensus signatures** conforming to EIP-712 or EIP-1271 to authorize redemptions, allowing trusted users to convert shares to assets in a fast and secure manner.

This module provides a **low-latency redemption path** under stronger trust assumptions, useful in environments where responsiveness is critical and participants are whitelisted by a governance consensus.

### Key Features

* Off-chain authorized redemptions using signed `Order` messages
* Oracle-bound price validation to prevent manipulation
* EIP-712 structured data signature verification
* Direct burning of shares and asset pulling from the vault and payout
* Nonce-based replay protection
* Vault hook execution and balance tracking
* **No redeem fee** applied (unlike possible fees in `RedeemQueue`)

### Function: `redeem`

```solidity
function redeem(Order calldata order, IConsensus.Signature[] calldata signatures) external payable nonReentrant
```

### Parameters:

* `order`: A signed redemption `Order` struct specifying asset amount and recipient
* `signatures`: Validator signatures from the consensus group

### Workflow

1. **Validation** via `validateOrder(...)`:
   * Signature freshness (`deadline`)
   * Queue and asset correctness
   * Caller authenticity and correct nonce
   * Signatures validated by registered `Consensus` contract
   * Price computed from `ordered` and `requested` values and verified via oracle
2. **Nonce incremented** for the caller to prevent signature reuse
3. **Vault liquid asset check**:
   * Ensures enough liquidity is available for the redemption
   * Reverts with `InsufficientAssets` if funds are lacking
4. **Redemption Processing**:
   * Burns `order.ordered` shares from the user via `shareManager`
   * Calls `vault.callHook(...)` for any strategy exit logic
   * Transfers `order.requested` assets to the user
   * Updates internal vault balance via the `RiskManager`
5. **Event Emitted**:
   * `OrderExecuted(order, signatures)` confirms successful execution

### Error: `InsufficientAssets`

```solidity
error InsufficientAssets(uint256 requested, uint256 available);
```

Thrown when the vault does not have enough liquid assets to fulfill the request. Ensures safety during instantaneous exits.


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