Update XMTP-JS SDK documentation for release @xmtp/node-sdk@4.1.1

  Automated update based on changes in xmtp-js @xmtp/node-sdk@4.1.1

  Changes analyzed:
  - Browser SDK and Node SDK API modifications
  - Content types updates and new features
  - Code sample accuracy and syntax validation
  - Version compatibility and installation instructions
  - Breaking changes documentation
  - TypeScript type definitions and examples

  Generated by Claude Code Actions

Author: github-actions[bot]

docs/pages/agents/core-messaging/create-a-client.mdx

@@ -87,6 +87,8 @@ const client = await Client.create(
   // client options
   {
     dbEncryptionKey,
+    // Optional: Use a function to dynamically set the database path based on inbox ID
+    // dbPath: (inboxId) => `./agent-databases/xmtp-${inboxId}.db3`,
   },
 );
 ```
@@ -130,7 +132,7 @@ type ClientOptions = {
   /**
    * Path to the local DB
    *
-   * There are 3 value types that can be used to specify the database path:
+   * There are 4 value types that can be used to specify the database path:
    *
    * - `undefined` (or excluded from the client options)
    *    The database will be created in the current working directory and is based on
@@ -143,8 +145,12 @@ type ClientOptions = {
    * - `string`
    *    The given path will be used to create the database.
    *    Example: `./my-db.db3`
+   *
+   * - `function`
+   *    A callback function that receives the inbox ID and returns a string path.
+   *    Example: `(inboxId) => string`
    */
-  dbPath?: string | null;
+  dbPath?: string | null | ((inboxId: string) => string);
   /**
    * Encryption key for the local DB
    */

docs/pages/chat-apps/core-messaging/create-a-client.mdx

@@ -106,6 +106,8 @@ const client = await Client.create(
   // client options
   {
     dbEncryptionKey,
+    // Optional: Use a function to dynamically set the database path based on inbox ID
+    // dbPath: (inboxId) => `./databases/xmtp-${inboxId}.db3`,
   },
 );
 ```
@@ -193,7 +195,7 @@ type ClientOptions = {
   /**
    * Path to the local DB
    *
-   * There are 3 value types that can be used to specify the database path:
+   * There are 4 value types that can be used to specify the database path:
    *
    * - `undefined` (or excluded from the client options)
    *    The database will be created in the current working directory and is based on
@@ -206,8 +208,12 @@ type ClientOptions = {
    * - `string`
    *    The given path will be used to create the database.
    *    Example: `./my-db.db3`
+   *
+   * - `function`
+   *    A callback function that receives the inbox ID and returns a string path.
+   *    Example: `(inboxId) => string`
    */
-  dbPath?: string | null;
+  dbPath?: string | null | ((inboxId: string) => string);
   /**
    * Encryption key for the local DB
    */
@@ -278,7 +284,7 @@ type ClientOptions = {
   /**
    * Path to the local DB
    *
-   * There are 3 value types that can be used to specify the database path:
+   * There are 4 value types that can be used to specify the database path:
    *
    * - `undefined` (or excluded from the client options)
    *    The database will be created in the current working directory and is based on
@@ -291,8 +297,12 @@ type ClientOptions = {
    * - `string`
    *    The given path will be used to create the database.
    *    Example: `./my-db.db3`
+   *
+   * - `function`
+   *    A callback function that receives the inbox ID and returns a string path.
+   *    Example: `(inboxId) => string`
    */
-  dbPath?: string | null;
+  dbPath?: string | null | ((inboxId: string) => string);
   /**
    * Encryption key for the local DB
    */