fix(saas): industry template audit fixes + pgvector optional + relay timeout

- Fix seed template tools to match actual runtime tool names
  (file_read/file_write/shell_exec/web_fetch)
- Persist system_prompt/temperature/max_tokens via identity system
  in agentStore.createFromTemplate()
- Fire-and-forget assignTemplate() in AgentOnboardingWizard
- Fix saas-relay-client unused variable warning
- Make pgvector extension optional in knowledge_base migration
- Increase StreamBridge timeout from 30s to 90s for thinking models

crates/zclaw-saas/src/relay/service.rs

@@ -13,8 +13,8 @@ use super::types::*;
 /// 上游无数据时，发送 SSE 心跳注释行的间隔
 const STREAMBRIDGE_HEARTBEAT_INTERVAL: Duration = Duration::from_secs(15);
 
-/// 上游无数据时，丢弃连接的超时阈值
-const STREAMBRIDGE_TIMEOUT: Duration = Duration::from_secs(30);
+/// 上游无数据时，丢弃连接的超时阈值（90s = 6 个心跳，给 thinking 模型更多时间）
+const STREAMBRIDGE_TIMEOUT: Duration = Duration::from_secs(90);
 
 /// 流结束后延迟清理的时间窗口
 const STREAMBRIDGE_CLEANUP_DELAY: Duration = Duration::from_secs(60);
@@ -526,9 +526,9 @@ fn build_stream_bridge(
                         idle_heartbeats as u64 * STREAMBRIDGE_HEARTBEAT_INTERVAL.as_secs(),
                     );
 
-                    // After 2 consecutive heartbeats without real data (30s),
+                    // After 6 consecutive heartbeats without real data (90s),
                     // terminate the stream to prevent connection leaks.
-                    if idle_heartbeats >= 2 {
+                    if idle_heartbeats >= 6 {
                         tracing::warn!(
                             "[StreamBridge] Timeout ({:?}) no real data, closing stream for task {}",
                             STREAMBRIDGE_TIMEOUT,