fix(audit): 第五轮审计修复 — 反思LLM分析、语义路由、并行执行、错误中文化

- P2: 反思引擎接入 LLM 深度行为分析 (analyze_patterns_with_llm)
- P3-M6: 语义路由 RuntimeLlmIntentDriver 真实 LLM 匹配
- P3-L1: V2 Pipeline execute_parallel 改用 buffer_unordered 真正并行
- P3-S10: Rust 用户可见错误提示统一中文化

累计修复 27 项，完成度 ~72% → ~78%

crates/zclaw-pipeline/src/executor.rs

@@ -125,7 +125,7 @@ impl PipelineExecutor {
             return Ok(run.clone());
         }
 
-        Err(ExecuteError::Action("Run not found after execution".to_string()))
+        Err(ExecuteError::Action("执行后未找到运行记录".to_string()))
     }
 
     /// Execute pipeline steps
@@ -215,7 +215,7 @@ impl PipelineExecutor {
                 Action::Parallel { each, step, max_workers } => {
                     let items = context.resolve(each)?;
                     let items_array = items.as_array()
-                        .ok_or_else(|| ExecuteError::Action("Parallel 'each' must resolve to an array".to_string()))?;
+                        .ok_or_else(|| ExecuteError::Action("并行执行 'each' 必须解析为数组".to_string()))?;
 
                     let workers = max_workers.unwrap_or(4);
                     let results = self.execute_parallel(step, items_array.clone(), workers, context).await?;