fix(growth,hands,kernel,desktop): Phase 1 用户可感知修复 — 6 项断链修复

Phase 1 修复内容:
1. Hand 执行前端字段映射 — instance_id → runId，修复 Hand 状态追踪
2. Heartbeat 痛点感知 — PAIN_POINTS_CACHE + VikingStorage 持久化 + 未解决痛点检查
3. Browser Hand 委托消息 — pending_execution → delegated_to_frontend + 中文摘要
4. 跨会话记忆检索增强 — 扩展 IdentityRecall 模式 26→43 + 弱身份信号检测 + 低结果 fallback
5. Twitter Hand 凭据持久化 — SetCredentials action + 文件持久化 + 启动恢复
6. Browser 测试修复 — 适配新的 delegated_to_frontend 响应格式

验证: cargo check ✅ | cargo test 912 PASS ✅ | tsc --noEmit ✅

desktop/src-tauri/src/intelligence/heartbeat.rs

@@ -357,6 +357,7 @@ async fn execute_tick(
     let checks: Vec<(&str, fn(&str) -> Option<HeartbeatAlert>)> = vec![
         ("pending-tasks", check_pending_tasks),
         ("memory-health", check_memory_health),
+        ("unresolved-pains", check_unresolved_pains),
         ("idle-greeting", check_idle_greeting),
         ("personality-improvement", check_personality_improvement),
         ("learning-opportunities", check_learning_opportunities),
@@ -447,7 +448,27 @@ static MEMORY_STATS_CACHE: OnceLock<RwLock<StdHashMap<String, MemoryStatsCache>>
 /// Key: agent_id, Value: last interaction timestamp (RFC3339)
 static LAST_INTERACTION: OnceLock<RwLock<StdHashMap<String, String>>> = OnceLock::new();
 
-/// Cached memory stats for an agent
+/// Global pain points cache (updated by frontend via Tauri command)
+/// Key: agent_id, Value: list of unresolved pain point descriptions
+static PAIN_POINTS_CACHE: OnceLock<RwLock<StdHashMap<String, Vec<String>>>> = OnceLock::new();
+
+fn get_pain_points_cache() -> &'static RwLock<StdHashMap<String, Vec<String>>> {
+    PAIN_POINTS_CACHE.get_or_init(|| RwLock::new(StdHashMap::new()))
+}
+
+/// Update pain points cache (called from frontend or growth middleware)
+pub fn update_pain_points_cache(agent_id: &str, pain_points: Vec<String>) {
+    let cache = get_pain_points_cache();
+    if let Ok(mut cache) = cache.write() {
+        cache.insert(agent_id.to_string(), pain_points);
+    }
+}
+
+/// Get cached pain points for an agent
+fn get_cached_pain_points(agent_id: &str) -> Option<Vec<String>> {
+    let cache = get_pain_points_cache();
+    cache.read().ok().and_then(|c| c.get(agent_id).cloned())
+}
 #[derive(Clone, Debug, Default)]
 pub struct MemoryStatsCache {
     pub task_count: usize,
@@ -755,6 +776,32 @@ fn check_learning_opportunities(agent_id: &str) -> Option<HeartbeatAlert> {
     }
 }
 
+/// Check for unresolved user pain points accumulated by the butler system.
+/// When pain points persist across multiple conversations, surface them as
+/// proactive suggestions.
+fn check_unresolved_pains(agent_id: &str) -> Option<HeartbeatAlert> {
+    let pains = get_cached_pain_points(agent_id)?;
+    if pains.is_empty() {
+        return None;
+    }
+    let count = pains.len();
+    let summary = if count <= 3 {
+        pains.join("、")
+    } else {
+        format!("{}等 {} 项", pains[..3].join("、"), count)
+    };
+    Some(HeartbeatAlert {
+        title: "未解决的用户痛点".to_string(),
+        content: format!(
+            "检测到 {} 个持续痛点：{}。建议主动提供解决方案或相关建议。",
+            count, summary
+        ),
+        urgency: if count >= 3 { Urgency::High } else { Urgency::Medium },
+        source: "unresolved-pains".to_string(),
+        timestamp: chrono::Utc::now().to_rfc3339(),
+    })
+}
+
 // === Tauri Commands ===
 
 /// Heartbeat engine state for Tauri
@@ -800,6 +847,9 @@ pub async fn heartbeat_init(
     // Restore heartbeat history from VikingStorage metadata
     engine.restore_history().await;
 
+    // Restore pain points cache from VikingStorage metadata
+    restore_pain_points(&agent_id).await;
+
     let mut engines = state.lock().await;
     engines.insert(agent_id, engine);
     Ok(())
@@ -865,6 +915,33 @@ pub async fn restore_last_interaction(agent_id: &str) {
     }
 }
 
+/// Restore pain points cache from VikingStorage metadata.
+async fn restore_pain_points(agent_id: &str) {
+    let key = format!("heartbeat:pain_points:{}", agent_id);
+    match crate::viking_commands::get_storage().await {
+        Ok(storage) => {
+            match zclaw_growth::VikingStorage::get_metadata_json(&*storage, &key).await {
+                Ok(Some(json)) => {
+                    if let Ok(pains) = serde_json::from_str::<Vec<String>>(&json) {
+                        let count = pains.len();
+                        update_pain_points_cache(agent_id, pains);
+                        tracing::info!("[heartbeat] Restored {} pain points for {}", count, agent_id);
+                    }
+                }
+                Ok(None) => {
+                    tracing::debug!("[heartbeat] No persisted pain points for {}", agent_id);
+                }
+                Err(e) => {
+                    tracing::warn!("[heartbeat] Failed to restore pain points: {}", e);
+                }
+            }
+        }
+        Err(e) => {
+            tracing::warn!("[heartbeat] Storage unavailable for pain points restore: {}", e);
+        }
+    }
+}
+
 /// Start heartbeat engine for an agent
 // @connected
 #[tauri::command]
@@ -998,6 +1075,29 @@ pub async fn heartbeat_record_interaction(
     Ok(())
 }
 
+/// Update pain points cache for heartbeat pain-awareness checks.
+/// Called by frontend when pain points are extracted from conversations.
+// @connected
+#[tauri::command]
+pub async fn heartbeat_update_pain_points(
+    agent_id: String,
+    pain_points: Vec<String>,
+) -> Result<(), String> {
+    update_pain_points_cache(&agent_id, pain_points.clone());
+    // Persist to VikingStorage for survival across restarts
+    let key = format!("heartbeat:pain_points:{}", agent_id);
+    tokio::spawn(async move {
+        if let Ok(storage) = crate::viking_commands::get_storage().await {
+            if let Ok(json) = serde_json::to_string(&pain_points) {
+                if let Err(e) = zclaw_growth::VikingStorage::store_metadata_json(&*storage, &key, &json).await {
+                    tracing::warn!("[heartbeat] Failed to persist pain points: {}", e);
+                }
+            }
+        }
+    });
+    Ok(())
+}
+
 #[cfg(test)]
 mod tests {
     use super::*;