fix(security): critical security and stability fixes

ts/core/utils/socket-tracker.ts

@@ -0,0 +1,63 @@
+/**
+ * Socket Tracker Utility
+ * Provides standardized socket cleanup with proper listener and timer management
+ */
+
+import type { Socket } from 'net';
+
+export type SocketTracked = {
+  cleanup: () => void;
+  addListener: <E extends string>(event: E, listener: (...args: any[]) => void) => void;
+  addTimer: (t: NodeJS.Timeout | null | undefined) => void;
+  safeDestroy: (reason?: Error) => void;
+};
+
+/**
+ * Create a socket tracker to manage listeners and timers
+ * Ensures proper cleanup and prevents memory leaks
+ */
+export function createSocketTracker(socket: Socket): SocketTracked {
+  const listeners: Array<{ event: string; listener: (...args: any[]) => void }> = [];
+  const timers: NodeJS.Timeout[] = [];
+  let cleaned = false;
+
+  const addListener = (event: string, listener: (...args: any[]) => void) => {
+    socket.on(event, listener);
+    listeners.push({ event, listener });
+  };
+
+  const addTimer = (t: NodeJS.Timeout | null | undefined) => {
+    if (!t) return;
+    timers.push(t);
+    // Unref timer so it doesn't keep process alive
+    if (typeof t.unref === 'function') {
+      t.unref();
+    }
+  };
+
+  const cleanup = () => {
+    if (cleaned) return;
+    cleaned = true;
+    
+    // Clear all tracked timers
+    for (const t of timers) {
+      clearTimeout(t);
+    }
+    timers.length = 0;
+    
+    // Remove all tracked listeners
+    for (const { event, listener } of listeners) {
+      socket.off(event, listener);
+    }
+    listeners.length = 0;
+  };
+
+  const safeDestroy = (reason?: Error) => {
+    cleanup();
+    if (!socket.destroyed) {
+      socket.destroy(reason);
+    }
+  };
+
+  return { cleanup, addListener, addTimer, safeDestroy };
+}