feat(growth,kernel,runtime): Embedding 接通 + 自学习自动化 — A线+B线 6 项实现

A线 Embedding 接通:
- A1: MemoryRetriever.set_embedding_client() + GrowthIntegration.configure_embedding()
  + Kernel.set_embedding_client() + viking_configure_embedding 传播到 Kernel
- A2: Skill 路由替换 new_tf_idf_only() 为 EmbeddingAdapter + LlmSkillFallback

B线 自学习自动化:
- B1: evolution_bridge.rs — candidate_to_manifest() (PromptOnly, disabled by default)
- B2: Kernel::generate_and_register_skill() 全链路 (LLM→parse→QualityGate→manifest→persist)
- B3: EvolutionMiddleware 双模式 (auto_mode 跳过注入, 留给 kernel 自动处理)
- B4: QualityGate 加固 (body ≥100字符 + 必须含标题 + 置信度上限 1.0)

验证: 934 tests PASS, 0 failures

crates/zclaw-runtime/src/growth.rs

@@ -148,6 +148,18 @@ impl GrowthIntegration {
         self.config.auto_extract = auto_extract;
     }
 
+    /// Configure embedding client for memory retrieval.
+    ///
+    /// Propagates the embedding client to the MemoryRetriever's SemanticScorer,
+    /// enabling embedding-based similarity in addition to TF-IDF.
+    /// Safe to call from non-async contexts.
+    pub fn configure_embedding(
+        &self,
+        client: Arc<dyn zclaw_growth::retrieval::semantic::EmbeddingClient>,
+    ) {
+        self.retriever.set_embedding_client(client);
+    }
+
     /// Set the user profile store for incremental profile updates
     pub fn with_profile_store(mut self, store: Arc<UserProfileStore>) -> Self {
         self.profile_store = Some(store);

crates/zclaw-runtime/src/middleware/evolution.rs

@@ -19,18 +19,35 @@ pub struct PendingEvolution {
 }
 
 /// 进化引擎中间件
-/// 检查是否有待确认的进化事件，注入确认提示到 system prompt
+/// 检查是否有待确认的进化事件，根据模式：
+/// - suggest 模式（默认）: 注入确认提示到 system prompt
+/// - auto 模式: 不注入，仅排队等待 kernel 自动处理
 pub struct EvolutionMiddleware {
     pending: Arc<RwLock<Vec<PendingEvolution>>>,
+    auto_mode: bool,
 }
 
 impl EvolutionMiddleware {
     pub fn new() -> Self {
         Self {
             pending: Arc::new(RwLock::new(Vec::new())),
+            auto_mode: false,
         }
     }
 
+    /// Create with auto mode enabled
+    pub fn new_auto() -> Self {
+        Self {
+            pending: Arc::new(RwLock::new(Vec::new())),
+            auto_mode: true,
+        }
+    }
+
+    /// Check if auto mode is enabled
+    pub fn is_auto_mode(&self) -> bool {
+        self.auto_mode
+    }
+
     /// 添加一个待确认的进化事件
     pub async fn add_pending(&self, evolution: PendingEvolution) {
         self.pending.write().await.push(evolution);
@@ -73,7 +90,12 @@ impl AgentMiddleware for EvolutionMiddleware {
             return Ok(MiddlewareDecision::Continue);
         }
 
-        // 只移除第一个事件，保留后续事件留待下次注入
+        // Auto mode: don't inject into prompt, leave for kernel to process
+        if self.auto_mode {
+            return Ok(MiddlewareDecision::Continue);
+        }
+
+        // Suggest mode: 只移除第一个事件，保留后续事件留待下次注入
         let to_inject = {
             let mut pending = self.pending.write().await;
             if pending.is_empty() {