fix(growth): Evolution Engine 穷尽审计 3CRITICAL + 3HIGH 全部修复

C-01: ExperienceExtractor 接入 ExperienceStore
- GrowthIntegration.new() 创建 ExperienceExtractor 时注入 ExperienceStore
- 经验持久化路径打通：extract_combined → persist_experiences → ExperienceStore

C-02+C-03: 进化触发链路全链路接通
- create_middleware_chain() 注册 EvolutionMiddleware (priority 78)
- MemoryMiddleware 持有 Arc<EvolutionMiddleware> 共享引用
- after_completion 中调用 check_evolution() → 推送 PendingEvolution
- EvolutionMiddleware 在下次对话前注入进化建议到 system prompt

H-01: FeedbackCollector loaded 标志修复
- load() 失败时保留 loaded=false，下次 save 重试
- 日志级别 debug → warn

H-03: FeedbackCollector 内部可变性
- EvolutionEngine.feedback 改为 Arc<Mutex<FeedbackCollector>>
- submit_feedback() 从 &mut self → &self，支持中间件 &self 调用路径
- GrowthIntegration.initialize() 从 &mut self → &self

H-05: 删除空测试 test_parse_empty_response (无 assert)

H-06: infer_experiences_from_memories() fallback
- Outcome::Success → Outcome::Partial (反映推断不确定性)

crates/zclaw-growth/src/evolution_engine.rs

@@ -42,7 +42,7 @@ impl Default for EvolutionConfig {
 /// 进化引擎中枢
 pub struct EvolutionEngine {
     viking: Arc<VikingAdapter>,
-    feedback: FeedbackCollector,
+    feedback: Arc<tokio::sync::Mutex<FeedbackCollector>>,
     config: EvolutionConfig,
 }
 
@@ -50,7 +50,9 @@ impl EvolutionEngine {
     pub fn new(viking: Arc<VikingAdapter>) -> Self {
         Self {
             viking: viking.clone(),
-            feedback: FeedbackCollector::with_viking(viking),
+            feedback: Arc::new(tokio::sync::Mutex::new(
+                FeedbackCollector::with_viking(viking),
+            )),
             config: EvolutionConfig::default(),
         }
     }
@@ -61,7 +63,9 @@ impl EvolutionEngine {
         let viking = experience_store.viking().clone();
         Self {
             viking: viking.clone(),
-            feedback: FeedbackCollector::with_viking(viking),
+            feedback: Arc::new(tokio::sync::Mutex::new(
+                FeedbackCollector::with_viking(viking),
+            )),
             config: EvolutionConfig::default(),
         }
     }
@@ -144,18 +148,21 @@ impl EvolutionEngine {
     // -----------------------------------------------------------------------
 
     /// 提交反馈并获取信任度更新，自动持久化
-    pub async fn submit_feedback(&mut self, entry: FeedbackEntry) -> TrustUpdate {
-        let update = self.feedback.submit_feedback(entry);
+    pub async fn submit_feedback(&self, entry: FeedbackEntry) -> TrustUpdate {
+        let mut feedback = self.feedback.lock().await;
+        let update = feedback.submit_feedback(entry);
         // 非阻塞持久化：失败仅打日志，不影响返回值
-        if let Err(e) = self.feedback.save().await {
+        if let Err(e) = feedback.save().await {
             tracing::warn!("[EvolutionEngine] Failed to persist trust records: {}", e);
         }
         update
     }
 
     /// 获取需要优化的进化产物
-    pub fn get_artifacts_needing_optimization(&self) -> Vec<String> {
+    pub async fn get_artifacts_needing_optimization(&self) -> Vec<String> {
         self.feedback
+            .lock()
+            .await
             .get_artifacts_needing_optimization()
             .iter()
             .map(|r| r.artifact_id.clone())
@@ -163,8 +170,10 @@ impl EvolutionEngine {
     }
 
     /// 获取建议归档的进化产物
-    pub fn get_artifacts_to_archive(&self) -> Vec<String> {
+    pub async fn get_artifacts_to_archive(&self) -> Vec<String> {
         self.feedback
+            .lock()
+            .await
             .get_artifacts_to_archive()
             .iter()
             .map(|r| r.artifact_id.clone())
@@ -172,22 +181,21 @@ impl EvolutionEngine {
     }
 
     /// 获取推荐产物
-    pub fn get_recommended_artifacts(&self) -> Vec<String> {
+    pub async fn get_recommended_artifacts(&self) -> Vec<String> {
         self.feedback
+            .lock()
+            .await
             .get_recommended_artifacts()
             .iter()
             .map(|r| r.artifact_id.clone())
             .collect()
     }
 
-    /// 获取反馈收集器的引用（用于高级查询）
-    pub fn feedback(&self) -> &FeedbackCollector {
-        &self.feedback
-    }
-
     /// 启动时加载已持久化的信任度记录
-    pub async fn load_feedback(&mut self) -> Result<usize> {
+    pub async fn load_feedback(&self) -> Result<usize> {
         self.feedback
+            .lock()
+            .await
             .load()
             .await
             .map_err(|e| zclaw_types::ZclawError::Internal(e))