fix: resolve abort listener leak and VAD sparse array initialization

packages/core/src/agent/agent-loop.ts

@@ -1051,7 +1051,6 @@ function computeRetryDelayMs(attempt: number): number {
 async function sleep(delayMs: number, signal?: AbortSignal): Promise<void> {
   await new Promise<void>((resolve, reject) => {
     const timer = setTimeout(() => {
-      signal?.removeEventListener("abort", abort);
       resolve();
     }, delayMs);
 

packages/core/src/tools/code-mode/service.ts

@@ -515,7 +515,6 @@ function bindAbortTermination(
 function delay(ms: number, signal?: AbortSignal): Promise<void> {
   return new Promise((resolve, reject) => {
     const timer = setTimeout(() => {
-      signal?.removeEventListener("abort", abort);
       resolve();
     }, ms);
 

packages/realtime/src/backend/stepfun-stateless.ts

@@ -457,7 +457,7 @@ export class StepfunStatelessAdapter implements BackendAdapter {
     let msg: any;
     try {
       msg = JSON.parse(raw);
-    } catch (e) {
+    } catch {
       this.log.warn({ raw: raw.slice(0, 200) }, "non-json message");
       return;
     }

packages/realtime/src/vad/cli-handlers.ts

@@ -113,8 +113,8 @@ function editDistance(a: string, b: string): number {
     bl = b.length;
   if (al === 0) return bl;
   if (bl === 0) return al;
-  let prev = new Array(bl + 1),
-    curr = new Array(bl + 1);
+  let prev = Array.from({ length: bl + 1 }, (_, j) => j);
+  let curr = Array.from({ length: bl + 1 }, (_, j) => j);
   for (let j = 0; j <= bl; j++) prev[j] = j;
   for (let i = 1; i <= al; i++) {
     curr[0] = i;

packages/realtime/src/vad/resolver.ts

@@ -249,8 +249,8 @@ function editDistance(a: string, b: string): number {
   if (al === 0) return bl;
   if (bl === 0) return al;
 
-  let prev = new Array(bl + 1);
-  let curr = new Array(bl + 1);
+  let prev = Array.from({ length: bl + 1 }, (_, j) => j);
+  let curr = Array.from({ length: bl + 1 }, (_, j) => j);
   for (let j = 0; j <= bl; j++) prev[j] = j;
 
   for (let i = 1; i <= al; i++) {