feat(kernel): agent_get 返回值扩展 UserProfile 字段

- AgentInfo 增加 user_profile: Option<Value> (serde default)
- SqliteStorage 增加 pool() getter
- agent_get 命令查询 UserProfileStore 填充 user_profile
- 前端 AgentInfo 类型同步更新
复用已有 UserProfileStore，不新增 Tauri 命令。

crates/zclaw-growth/src/storage/sqlite.rs

@@ -41,6 +41,11 @@ pub(crate) struct MemoryRow {
 }
 
 impl SqliteStorage {
+    /// Get a reference to the underlying connection pool
+    pub fn pool(&self) -> &SqlitePool {
+        &self.pool
+    }
+
     /// Create a new SQLite storage at the given path
     pub async fn new(path: impl Into<PathBuf>) -> Result<Self> {
         let path = path.into();

crates/zclaw-kernel/src/registry.rs

@@ -85,6 +85,7 @@ impl AgentRegistry {
             system_prompt: config.system_prompt.clone(),
             temperature: config.temperature,
             max_tokens: config.max_tokens,
+            user_profile: None,
         })
     }
 

crates/zclaw-types/src/agent.rs

@@ -171,6 +171,9 @@ pub struct AgentInfo {
     pub system_prompt: Option<String>,
     pub temperature: Option<f32>,
     pub max_tokens: Option<u32>,
+    /// UserProfile from zclaw-memory UserProfileStore (populated on-demand by agent_get)
+    #[serde(default)]
+    pub user_profile: Option<serde_json::Value>,
 }
 
 impl From<AgentConfig> for AgentInfo {
@@ -189,6 +192,7 @@ impl From<AgentConfig> for AgentInfo {
             system_prompt: config.system_prompt,
             temperature: config.temperature,
             max_tokens: config.max_tokens,
+            user_profile: None, // Populated on-demand by agent_get command
         }
     }
 }