fix(mail/delivery): Centralize runtime/plugin imports and switch modules to use plugins exports; unify EventEmitter usage; update Deno dependencies and small path/server refactors

ts/mail/routing/classes.email.router.ts

@@ -1,12 +1,11 @@
 import * as plugins from '../../plugins.ts';
-import { EventEmitter } from 'node:events';
 import type { IEmailRoute, IEmailMatch, IEmailAction, IEmailContext } from './interfaces.ts';
 import type { Email } from '../core/classes.email.ts';
 
 /**
  * Email router that evaluates routes and determines actions
  */
-export class EmailRouter extends EventEmitter {
+export class EmailRouter extends plugins.EventEmitter {
   private routes: IEmailRoute[];
   private patternCache: Map<string, boolean> = new Map();
   private storageManager?: any; // StorageManager instance

ts/mail/routing/classes.unified.email.server.ts

@@ -1,6 +1,5 @@
 import * as plugins from '../../plugins.ts';
 import * as paths from '../../paths.ts';
-import { EventEmitter } from 'events';
 import { logger } from '../../logger.ts';
 import { 
   SecurityLogger, 
@@ -154,7 +153,7 @@ export interface IServerStats {
 /**
  * Unified email server that handles all email traffic with pattern-based routing
  */
-export class UnifiedEmailServer extends EventEmitter {
+export class UnifiedEmailServer extends plugins.EventEmitter {
   private dcRouter: DcRouter;
   private options: IUnifiedEmailServerOptions;
   private emailRouter: EmailRouter;