fix(audit): P0 反思引擎 LLM 接入 + P1 hand run_id/skill triggers/pipeline v2

审计修复 Batch 1 (M4-02/M3-01/M5-01/M6-02):

P0 M4-02: reflection_reflect 从 KernelState 获取 LLM driver
  - 新增 kernel_state 参数，从 kernel.driver() 获取驱动
  - 自动路径(post_conversation_hook)已正常，手动 Tauri 命令路径已修复

P1 M3-01: hand_execute 返回 run_id 给前端
  - HandResult 新增 run_id 字段
  - execute_hand 结果包含 run_id.to_string()

P1 M5-01: skill-discovery 使用后端 triggers 字段
  - BackendSkillInfo 新增 triggers 字段
  - convertFromBackend 优先使用 triggers，fallback tags

P1 M6-02: pipeline_list 支持 v2 YAML 格式
  - scan_pipelines_with_paths 增加 v2 fallback 解析
  - 新增 pipeline_v2_to_info 转换函数
  - discovery.rs 导入 parse_pipeline_v2_yaml

注: M4-01 双数据库问题已在之前批次修复
     M6-01 route_intent 已确认注册，审计结论过时

desktop/src-tauri/src/pipeline_commands/discovery.rs

@@ -6,6 +6,7 @@ use tauri::{AppHandle, Emitter, State};
 use zclaw_pipeline::{
     RunStatus,
     parse_pipeline_yaml,
+    parse_pipeline_v2_yaml,
     PipelineExecutor,
     ActionRegistry,
     LlmActionDriver,
@@ -15,7 +16,7 @@ use zclaw_pipeline::{
 
 use super::{PipelineState, PipelineInfo, PipelineRunResponse, RunPipelineResponse, RunPipelineRequest};
 use super::adapters::{RuntimeLlmAdapter, PipelineSkillDriver, PipelineHandDriver};
-use super::helpers::{get_pipelines_directory, scan_pipelines_with_paths, scan_pipelines_full_sync, pipeline_to_info};
+use super::helpers::{get_pipelines_directory, scan_pipelines_with_paths, scan_pipelines_full_sync, pipeline_to_info, pipeline_v2_to_info};
 
 use crate::kernel_commands::KernelState;
 
@@ -60,6 +61,8 @@ pub async fn pipeline_list(
                 state_pipelines.insert(info.id.clone(), pipeline);
                 state_paths.insert(info.id.clone(), path.clone());
             }
+            // v2 pipelines are listed but not stored in v1 state;
+            // they can be discovered and displayed but execution requires v2 engine support.
         }
         result.push(info.clone());
     }