docs(fassets): add detailed fee structures for minting and redemption processes

docs/fassets/2-minting.mdx

@@ -90,7 +90,13 @@ The executor:
 
 ## Fees
 
-The following fees are paid to mint FAssets:
+These fees are incurred by the **minter** when creating new FAssets:
+
+| Fee Name                             | Charged In                               | Status     | Purpose                                                                                              |
+| :----------------------------------- | :--------------------------------------- | :--------- | :--------------------------------------------------------------------------------------------------- |
+| **Collateral Reservation Fee (CRF)** | Native Currency (FLR)                    | Obligatory | Compensates the Agent and collateral providers for locked collateral time.                           |
+| **Minting Fee**                      | Underlying Currency (e.g., XRP for FXRP) | Obligatory | The main source of revenue for the Agent and collateral providers.                                   |
+| **Executor Fee**                     | FLR (from CRF remainder)                 | Optional   | Compensates an optional executor who triggers minting execution, saving the minter extra operations. |
 
 ### Collateral Reservation Fee
 

docs/fassets/3-redemption.mdx

@@ -51,6 +51,34 @@ This is the summary of the redemption process:
 
    After the collateral is released, it can either back the minting of more FAssets or be withdrawn.
 
+## Fees
+
+These fees are charged when a user redeems FAssets for the underlying asset:
+
+| Fee Name           | Charged In                            | Status     | Purpose                                                                                                                       |
+| :----------------- | :------------------------------------ | :--------- | :---------------------------------------------------------------------------------------------------------------------------- |
+| **Redemption Fee** | Underlying Asset (e.g., XRP for FXRP) | Obligatory | Covers the Agent's gas costs for the payment transaction.                                                                     |
+| **Executor Fee**   | FLR                                   | Optional   | Compensates an optional executor who triggers redemption defaults when agents fail to pay, saving redeemers extra operations. |
+
+### Redemption Fee
+
+The redemption fee is the amount of the underlying asset that the agent retains upon redemption.
+This fee is intended solely to cover the agent's transaction fee on the underlying chain, and therefore, it is not shared with the collateral pool.
+The fee percentage is defined by governance, is the same for all agents, and is typically smaller than the minting fee.
+
+Governance calculates the percentage so that the fee to redeem one lot pays for a typical transaction fee on the underlying chain.
+Therefore, when larger amounts are redeemed at a single address, the agent accrues additional fees because the underlying fee for both small and large transactions is the same.
+However, when underlying fees are very high, the agent might still lose funds when a redemption for a small amount, such as one lot, is made.
+If this situation occurs frequently, governance will increase the redemption-fee percentage.
+
+### Executor Fee
+
+An optional executor fee can be paid to compensate an executor who triggers a redemption default if the agent fails to pay on the underlying chain.
+This spares the redeemer from having to perform extra operations to complete the redemption process.
+
+The executor fee is paid in FLR, and the amount is agreed upon off-chain between the redeemer and the executor.
+This fee is only applicable when an executor is involved in the redemption process.
+
 ## Redemption-Payment Failure
 
 Agents have a limited time to pay the redeemer on the underlying chain.
@@ -112,17 +140,6 @@ If neither the redeemer, the agent, nor the executor presents proof of payment o
 
 The procedure to recover this collateral is the same as the procedure in the minting case.
 
-## Redemption Fee
-
-The redemption fee is the amount of the underlying asset that the agent retains upon redemption.
-This fee is intended solely to cover the agent's transaction fee on the underlying chain, and therefore, it is not shared with the collateral pool.
-The fee percentage is defined by governance, is the same for all agents, and is typically smaller than the minting fee.
-
-Governance calculates the percentage so that the fee to redeem one lot pays for a typical transaction fee on the underlying chain.
-Therefore, when larger amounts are redeemed at a single address, the agent accrues additional fees because the underlying fee for both small and large transactions is the same.
-However, when underlying fees are very high, the agent might still lose funds when a redemption for a small amount, such as one lot, is made.
-If this situation occurs frequently, governance will increase the redemption-fee percentage.
-
 ## Self-redemption
 
 Agents can also act as users and redeem FAssets from their own vaults.