feat(storage): add comprehensive tests for StorageManager with memory, filesystem, and custom function backends

feat(email): implement EmailSendJob class for robust email delivery with retry logic and MX record resolution

feat(mail): restructure mail module exports for simplified access to core and delivery functionalities

ts/mail/delivery/smtpserver/connection-manager.ts

@@ -342,14 +342,14 @@ export class ConnectionManager implements IConnectionManager {
     // Explicitly set socket buffer sizes to prevent memory issues
     socket.setNoDelay(true); // Disable Nagle's algorithm for better responsiveness
     
-    // Set limits on socket buffer size if supported by Node.ts version
+    // Set limits on socket buffer size if supported by Node.js version
     try {
       // Here we set reasonable buffer limits to prevent memory exhaustion attacks
       const highWaterMark = 64 * 1024; // 64 KB
-      // Note: Socket high water mark methods can't be set directly in newer Node.ts versions
+      // Note: Socket high water mark methods can't be set directly in newer Node.js versions
       // These would need to be set during socket creation or with a different API
     } catch (error) {
-      // Ignore errors from older Node.ts versions that don't support these methods
+      // Ignore errors from older Node.js versions that don't support these methods
       SmtpLogger.debug(`Could not set socket buffer limits: ${error instanceof Error ? error.message : String(error)}`);
     }
     
@@ -496,14 +496,14 @@ export class ConnectionManager implements IConnectionManager {
     // Explicitly set socket buffer sizes to prevent memory issues
     socket.setNoDelay(true); // Disable Nagle's algorithm for better responsiveness
     
-    // Set limits on socket buffer size if supported by Node.ts version
+    // Set limits on socket buffer size if supported by Node.js version
     try {
       // Here we set reasonable buffer limits to prevent memory exhaustion attacks
       const highWaterMark = 64 * 1024; // 64 KB
-      // Note: Socket high water mark methods can't be set directly in newer Node.ts versions
+      // Note: Socket high water mark methods can't be set directly in newer Node.js versions
       // These would need to be set during socket creation or with a different API
     } catch (error) {
-      // Ignore errors from older Node.ts versions that don't support these methods
+      // Ignore errors from older Node.js versions that don't support these methods
       SmtpLogger.debug(`Could not set socket buffer limits: ${error instanceof Error ? error.message : String(error)}`);
     }