feat(tip-1026): add logoURI/setLogoURI, LogoURIUpdated, and createToken overload

src/interfaces/ITIP20.sol

@@ -261,6 +261,34 @@ interface ITIP20 is ITIP20RolesAuthErr {
 
     /// @notice Returns the EIP-712 domain separator for this token
     function DOMAIN_SEPARATOR() external view returns (bytes32);
+
+    // TIP-1026: Token Logo URI
+
+    /// @notice The provided logo URI exceeds the maximum length of 256 bytes.
+    error LogoURITooLong();
+
+    /// @notice The provided logo URI is non-empty and is either not a syntactically
+    ///         valid URI or its scheme is not in the allowlist (`https`, `http`,
+    ///         `ipfs`, `data`, ASCII-case-insensitive).
+    error InvalidLogoURI();
+
+    /// @notice Emitted when the logo URI is updated.
+    /// @param updater The account that performed the update.
+    /// @param newLogoURI The new logo URI.
+    event LogoURIUpdated(address indexed updater, string newLogoURI);
+
+    /// @notice Returns the logo URI for this token (TIP-1026).
+    /// @return The logo URI string (max 256 bytes; empty if not set).
+    function logoURI() external view returns (string memory);
+
+    /// @notice Sets the logo URI for this token (requires DEFAULT_ADMIN_ROLE).
+    /// @param newLogoURI The new logo URI (must be <= 256 bytes and, if non-empty,
+    ///                   a valid URI with an allowed scheme).
+    /// @dev Reverts with `LogoURITooLong` if the URI exceeds 256 bytes, or with
+    ///      `InvalidLogoURI` if the URI is non-empty and either not syntactically
+    ///      a URI or its scheme is not in the allowlist. An empty string is valid
+    ///      and clears the logo URI.
+    function setLogoURI(string calldata newLogoURI) external;
 }
 
 /// @title The interface for TIP-20 compliant tokens

src/interfaces/ITIP20Factory.sol

@@ -44,6 +44,28 @@ interface ITIP20Factory {
         bytes32 salt
     ) external returns (address);
 
+    /// @notice Creates a new TIP-20 token and atomically sets its `logoURI` (TIP-1026).
+    /// @dev Solidity overload of `createToken` with an additional `logoURI` argument.
+    ///      The legacy 6-argument selector is unchanged and remains supported.
+    ///      The logo URI is validated **before** the token is deployed.
+    ///      Reverts with `LogoURITooLong` if `bytes(logoURI).length > 256`, or with
+    ///      `InvalidLogoURI` if `logoURI` is non-empty and either has no parseable
+    ///      scheme (RFC 3986 §3.1) or its scheme is not in the allowlist
+    ///      (`https`, `http`, `ipfs`, `data`, case-insensitive).
+    ///      The `LogoURIUpdated` event is emitted by the new token (not the factory)
+    ///      with `updater = msg.sender`. An empty `logoURI` is valid and skips both
+    ///      the slot write and the event.
+    /// @return The address of the newly created token contract
+    function createToken(
+        string memory name,
+        string memory symbol,
+        string memory currency,
+        ITIP20 quoteToken,
+        address admin,
+        bytes32 salt,
+        string memory logoURI
+    ) external returns (address);
+
     /// @notice Checks if a given address is a TIP-20 compliant token
     /// @param token The address of the token to check
     /// @return True if the address is a TIP-20 token, false otherwise