fix(saas): fix Box<dyn Error> to anyhow conversion in cache init

crates/zclaw-saas/src/main.rs

@@ -61,6 +61,24 @@ async fn main() -> anyhow::Result<()> {
         }
     });
 
+    // 初始化缓存并启动定时刷新 (60s)
+    state.cache.load_from_db(&db).await.map_err(|e| anyhow::anyhow!("{}", e))?;
+    info!("Cache initialized: {} providers, {} models", state.cache.providers.len(), state.cache.models.len());
+    {
+        let cache_state = state.clone();
+        let db_clone = db.clone();
+        tokio::spawn(async move {
+            let mut interval = tokio::time::interval(std::time::Duration::from_secs(60));
+            loop {
+                interval.tick().await;
+                if let Err(e) = cache_state.cache.load_from_db(&db_clone).await {
+                    tracing::warn!("Cache refresh failed: {}", e);
+                }
+                cache_state.cache.calibrate_queue_counts(&db_clone).await;
+            }
+        });
+    }
+
     let app = build_router(state).await;
 
     // 配置 TCP keepalive + 短 SO_LINGER，防止 CLOSE_WAIT 累积