fix(memory): 跨会话记忆断裂修复 — profile_store连接+双数据库统一+诊断日志

根因: 3个断裂点
1. profile_store未连接: create_middleware_chain()中GrowthIntegration未设置
   UserProfileStore, 导致extract_combined()的profile_signals被静默丢弃
2. 双数据库不一致: UserProfileStore写入data.db, agent_get读取memories.db,
   两库隔离导致UserProfile永远读不到
3. 缺少关键日志: 提取/存储/检索链路无info级别日志, 问题难以诊断

修复:
- create_middleware_chain()中添加 with_profile_store(memory.pool())
- agent_get改为使用kernel.memory()而非viking_commands::get_storage()
- Kernel暴露memory()方法返回Arc<MemoryStore>
- growth.rs增强日志: 存储成功/失败/提取详情/profile更新数

验证: Tauri端E2E测试通过
- 会话A发送消息 → 提取6记忆+4 profile signals → 存储成功
- 新会话B发送消息 → Injected memories → LLM回复提及之前话题
- 管家Tab显示: 用户画像(医疗/健康)+近期话题+53条记忆分组

crates/zclaw-kernel/src/kernel/mod.rs

@@ -365,17 +365,6 @@ impl Kernel {
             chain.register(Arc::new(mw));
         }
 
-        // Data masking middleware — DISABLED for desktop single-user scenario.
-        // The regex-based approach over-matches common Chinese text (e.g. "有一家公司"
-        // gets masked as a company entity). Response unmask was also missing.
-        // Re-enable when NLP-based entity detection is available.
-        // {
-        //     use std::sync::Arc;
-        //     let masker = Arc::new(zclaw_runtime::middleware::data_masking::DataMasker::new());
-        //     let mw = zclaw_runtime::middleware::data_masking::DataMaskingMiddleware::new(masker);
-        //     chain.register(Arc::new(mw));
-        // }
-
         // Growth integration — cached to avoid recreating empty scorer per request
         let growth = {
             let mut cached = self.growth.lock().expect("growth lock");
@@ -388,6 +377,12 @@ impl Kernel {
                 if let Some(ref embed_client) = self.embedding_client {
                     g.configure_embedding(embed_client.clone());
                 }
+                // Bridge UserProfileStore so extract_combined() can persist profile signals
+                {
+                    let profile_store = zclaw_memory::UserProfileStore::new(self.memory.pool());
+                    g = g.with_profile_store(std::sync::Arc::new(profile_store));
+                    tracing::info!("[Kernel] UserProfileStore bridged to GrowthIntegration");
+                }
                 *cached = Some(std::sync::Arc::new(g));
             }
             cached.as_ref().expect("growth present").clone()
@@ -567,6 +562,11 @@ impl Kernel {
         self.viking.clone()
     }
 
+    /// Get a reference to the shared MemoryStore
+    pub fn memory(&self) -> Arc<MemoryStore> {
+        self.memory.clone()
+    }
+
     /// Set the LLM extraction driver for the Growth system.
     ///
     /// Required for `MemoryMiddleware` to extract memories from conversations