refactor: optimize core engine and retrieval logic for v2.80.43

src/core/queue.ts

@@ -1,8 +1,24 @@
+import * as os from 'os';
 import { logInfo, logError } from '../utils';
 
 /**
- * ActionQueueManager: Manages large-scale tasks by processing them 
- * with a concurrency limit to prevent resource exhaustion and I/O bottlenecks 
+ * Default concurrency = max(2, cpus - 1). Leaves one core for the VS Code UI
+ * thread and the extension host, scales up on bigger boxes. Static per-process
+ * (no dynamic adjustment) — kept simple because the heavy work (LLM calls)
+ * is gated by `missionId` locks elsewhere, not the action queue.
+ */
+function defaultConcurrencyLimit(): number {
+    try {
+        const cpus = os.cpus()?.length ?? 4;
+        return Math.max(2, cpus - 1);
+    } catch {
+        return 3;
+    }
+}
+
+/**
+ * ActionQueueManager: Manages large-scale tasks by processing them
+ * with a concurrency limit to prevent resource exhaustion and I/O bottlenecks
  * while maintaining high throughput under maximum load.
  */
 export class ActionQueueManager {
@@ -10,7 +26,7 @@ export class ActionQueueManager {
     private activeCount: number = 0;
     private readonly concurrencyLimit: number;
 
-    constructor(concurrencyLimit: number = 3) {
+    constructor(concurrencyLimit: number = defaultConcurrencyLimit()) {
         this.concurrencyLimit = concurrencyLimit;
     }