feat(docs): add IMintingTagManager reference and update IAssetManager with new functions

Author: fassko

docs/fassets/10-reference.mdx

@@ -62,6 +62,12 @@ Smart contract interfaces for interacting with the FAssets system.
       href: "/fassets/reference/ICoreVaultManager",
       docId: "fassets/reference/ICoreVaultManager",
     },
+    {
+      type: "link",
+      label: "IMintingTagManager",
+      href: "/fassets/reference/IMintingTagManager",
+      docId: "fassets/reference/IMintingTagManager",
+    },
     {
       type: "link",
       label: "IAgentOwnerRegistry",

docs/fassets/reference/IAssetManager.mdx

@@ -98,6 +98,27 @@ function fAsset()
     returns (IERC20);
 ```
 
+### `directMintingPaymentAddress`
+
+Gets the payment address to which the underlying assets must be sent for direct minting.
+
+```solidity
+function directMintingPaymentAddress()
+    external view
+    returns (string memory);
+```
+
+### `getMintingTagManager`
+
+Returns the minting tag manager contract address.
+To interact with it, use the [IMintingTagManager](/fassets/reference/IMintingTagManager) reference.
+
+```solidity
+function getMintingTagManager()
+    external view
+    returns (address);
+```
+
 ## Agents
 
 ## `getAllAgents`
@@ -305,7 +326,8 @@ Sourced from `ICoreVaultSettings.sol` on [GitHub](https://github.com/flare-found
 
 ### `getCoreVaultManager`
 
-Returns the core vault manager address. To interact with the Core Vault manager reference the [Core Vault Manager](/fassets/reference/ICoreVaultManager) contract.
+Returns the core vault manager address.
+To interact with the Core Vault manager reference the [Core Vault Manager](/fassets/reference/ICoreVaultManager) contract.
 
 ```solidity
 function getCoreVaultManager()

docs/fassets/reference/IMintingTagManager.mdx

@@ -0,0 +1,97 @@
+---
+title: IMintingTagManager
+description: FAssets IMintingTagManager interface reference.
+keywords: [fassets, minting-tags, xrp, bitcoin, dogecoin, flare-network]
+sidebar_position: 5
+---
+
+Reference for managing and interacting with FAssets `IMintingTagManager`.
+
+To get the minting tag manager address, use the [getMintingTagManager](/fassets/reference/IAssetManager#getmintingtagmanager) method on the [IAssetManager](/fassets/reference/IAssetManager) contract.
+
+## Functions
+
+### `reserve`
+
+Reserve a new minting tag by paying the reservation fee.
+The caller becomes the owner of the tag and the initial minting recipient.
+
+```solidity
+function reserve() external payable returns (uint256);
+```
+
+#### Returns
+
+- The newly reserved minting tag ID.
+
+### `setMintingRecipient`
+
+Set the minting recipient for a tag.
+Only callable by the tag owner.
+The minting recipient is the address that receives minted FAssets when this tag is used.
+
+```solidity
+function setMintingRecipient(uint256 _mintingTag, address _recipient) external;
+```
+
+#### Parameters
+
+- `_mintingTag`: The minting tag ID.
+- `_recipient`: The new minting recipient address (must not be the zero address).
+
+### `reservationFee`
+
+Return the fee (in native currency) required to reserve a new minting tag.
+
+```solidity
+function reservationFee() external view returns (uint256);
+```
+
+### `reservedTagsForOwner`
+
+Return all minting tag IDs owned by the given address.
+
+```solidity
+function reservedTagsForOwner(address _owner) external view returns (uint256[] memory);
+```
+
+#### Parameters
+
+- `_owner`: The address to query.
+
+#### Returns
+
+- An array of minting tag IDs owned by `_owner`.
+
+### `mintingRecipient`
+
+Return the minting recipient for a given tag.
+
+```solidity
+function mintingRecipient(uint256 _mintingTag) external view returns (address);
+```
+
+#### Parameters
+
+- `_mintingTag`: The minting tag ID.
+
+#### Returns
+
+- The address that receives minted FAssets when this tag is used.
+
+### `allowedExecutor`
+
+Return the currently active allowed executor for a given tag.
+If no executor is set or the pending change has not activated yet, this returns the previous executor.
+
+```solidity
+function allowedExecutor(uint256 _mintingTag) external view returns (address);
+```
+
+#### Parameters
+
+- `_mintingTag`: The minting tag ID.
+
+#### Returns
+
+- The address of the allowed executor, or `address(0)` if none is set.