feat: Batch 5-9 — GrowthIntegration桥接、验证补全、死代码清理、Pipeline模板、Speech/Twitter真实实现

Batch 5 (P0): GrowthIntegration 接入 Tauri
- Kernel 新增 set_viking()/set_extraction_driver() 桥接 SqliteStorage
- 中间件链共享存储，MemoryExtractor 接入 LLM 驱动

Batch 6 (P1): 输入验证 + Heartbeat
- Relay 验证补全（stream 兼容检查、API key 格式校验）
- UUID 类型校验、SessionId 错误返回
- Heartbeat 默认开启 + 首次聊天自动初始化

Batch 7 (P2): 死代码清理
- zclaw-channels 整体移除（317 行）
- multi-agent 特性门控、admin 方法标注

Batch 8 (P2): Pipeline 模板
- PipelineMetadata 新增 annotations 字段
- pipeline_templates 命令 + 2 个示例模板
- fallback driver base_url 修复（doubao/qwen/deepseek 端点）

Batch 9 (P1): SpeechHand/TwitterHand 真实实现
- SpeechHand: tts_method 字段 + Browser TTS 前端集成 (Web Speech API)
- TwitterHand: 12 个 action 全部替换为 Twitter API v2 真实 HTTP 调用
- chatStore/useAutomationEvents 双路径 TTS 触发

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

@@ -246,6 +246,7 @@ pub fn is_extraction_driver_configured() -> bool {
 /// Get the global extraction driver.
 ///
 /// Returns `None` if not yet configured via `configure_extraction_driver`.
+#[allow(dead_code)]
 pub fn get_extraction_driver() -> Option<Arc<TauriExtractionDriver>> {
     EXTRACTION_DRIVER.get().cloned()
 }

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

@@ -100,12 +100,12 @@ pub type HeartbeatCheckFn = Box<dyn Fn(String) -> std::pin::Pin<Box<dyn std::fut
 impl Default for HeartbeatConfig {
     fn default() -> Self {
         Self {
-            enabled: false,
+            enabled: true,
             interval_minutes: 30,
             quiet_hours_start: Some("22:00".to_string()),
             quiet_hours_end: Some("08:00".to_string()),
             notify_channel: NotifyChannel::Ui,
-            proactivity_level: ProactivityLevel::Light,
+            proactivity_level: ProactivityLevel::Standard,
             max_alerts_per_tick: 5,
         }
     }

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

@@ -57,6 +57,52 @@ impl fmt::Display for ValidationError {
 
 impl std::error::Error for ValidationError {}
 
+/// Validate a UUID string (for agent_id, session_id, etc.)
+///
+/// Provides a clear error message when the UUID format is invalid,
+/// instead of a generic "invalid characters" error from `validate_identifier`.
+pub fn validate_uuid(value: &str, field_name: &str) -> Result<(), ValidationError> {
+    let len = value.len();
+
+    if len == 0 {
+        return Err(ValidationError::RequiredFieldEmpty {
+            field: field_name.to_string(),
+        });
+    }
+
+    // UUID format: 8-4-4-4-12 hex digits with hyphens (36 chars total)
+    if len != 36 {
+        return Err(ValidationError::InvalidCharacters {
+            field: field_name.to_string(),
+            invalid_chars: format!("expected UUID format (36 chars), got {} chars", len),
+        });
+    }
+
+    // Quick structure check: positions 8,13,18,23 should be '-'
+    let bytes = value.as_bytes();
+    if bytes[8] != b'-' || bytes[13] != b'-' || bytes[18] != b'-' || bytes[23] != b'-' {
+        return Err(ValidationError::InvalidCharacters {
+            field: field_name.to_string(),
+            invalid_chars: "not a valid UUID (expected format: xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx)".into(),
+        });
+    }
+
+    // Check all non-hyphen positions are hex digits
+    for (i, &b) in bytes.iter().enumerate() {
+        if i == 8 || i == 13 || i == 18 || i == 23 {
+            continue;
+        }
+        if !b.is_ascii_hexdigit() {
+            return Err(ValidationError::InvalidCharacters {
+                field: field_name.to_string(),
+                invalid_chars: format!("'{}' at position {} is not a hex digit", b as char, i),
+            });
+        }
+    }
+
+    Ok(())
+}
+
 /// Validate an identifier (agent_id, pipeline_id, skill_id, etc.)
 ///
 /// # Rules