feat: v0.8.2 安全纵深补全 · 协议保真 · 断链修复 — 图片SSRF/根MEMORY.md保护根治 · Anthropic thinking回传+pause_turn续传 · 2523 用例全量回归 + E2E 扩充

electron/harness/orchestration/__tests__/orchestrator.test.ts

@@ -238,7 +238,7 @@ describe('TaskOrchestrator — 工具白名单', () => {
   });
 });
 
-describe('TaskOrchestrator — 递归深度限制', () => {
+describe('TaskOrchestrator — 并发委派上限', () => {
   it('同一会话并发达到 3 层后，第 4 次委派被拒绝（同步计数）', async () => {
     const { releases } = installLatchedAdapter();
 
@@ -248,7 +248,8 @@ describe('TaskOrchestrator — 递归深度限制', () => {
 
     const d4 = await orchestrator.delegate({ description: 'L4', parentSessionId: 's' });
     expect(d4.success).toBe(false);
-    expect(d4.result).toContain('depth limit');
+    // v0.8.2 P3-2: 文案如实描述为并发上限（非递归深度 —— SubAgent 无 delegate_task）
+    expect(d4.result).toContain('concurrency limit');
     expect(d4.iterations).toBe(0);
 
     // 等三个引擎都挂起到闩锁再释放（过早释放会扑空）

electron/harness/orchestration/orchestrator.ts

@@ -86,7 +86,7 @@ interface SubAgentHandle {
   getStatus: () => { taskId: string; status: string; description: string; depth: number };
 }
 
-/** 默认递归深度限制 */
+/** 默认并发委派上限（每会话同时活跃的 SubAgent 数） */
 const MAX_DELEGATION_DEPTH = 3;
 
 export class TaskOrchestrator extends EventEmitter {
@@ -139,16 +139,21 @@ export class TaskOrchestrator extends EventEmitter {
     const taskId = params.taskId ?? `sub_${nanoid(8)}`;
     const startMs = Date.now();
 
-    // ===== 递归深度检查 =====
+    // ===== 并发委派上限检查 =====
+    // v0.8.2 P3-2 根治（语义对齐）：sessionDepth 实际计数的是"该会话当前活跃的
+    // 委派数"（finally 中恢复/清除），且 delegate_task 已从 SubAgent 工具集排除、
+    // 真实嵌套递归不可能发生 —— 旧文案"depth limit reached"误导排障方向
+    // （测试 engine-toolchain/orchestrator 按并发 3 层锁定该行为）。现文案与
+    // 注释如实描述为并发委派上限；README 的"3 层深度"措辞同步对齐。
     const currentDepth = this.sessionDepth.get(params.parentSessionId) ?? 0;
     if (currentDepth >= MAX_DELEGATION_DEPTH) {
       log.warn(
-        `[Orchestrator] Delegation depth limit reached (${currentDepth}) for session ${params.parentSessionId}`,
+        `[Orchestrator] Concurrent delegation limit reached (${currentDepth}) for session ${params.parentSessionId}`,
       );
       return {
         taskId,
         parentSessionId: params.parentSessionId,
-        result: `SubAgent delegation depth limit reached (${MAX_DELEGATION_DEPTH}). Cannot delegate further.`,
+        result: `SubAgent concurrency limit reached (${MAX_DELEGATION_DEPTH} concurrent delegations per session). Wait for an active subtask to finish before delegating more.`,
         success: false,
         durationMs: 0,
         iterations: 0,