Update BossAI workflow and workspace experience

src/services/shared/mod.rs

@@ -21,8 +21,17 @@ pub async fn enforce_key_request_limit(
         return Err(AppError::Forbidden("API key is disabled".into()));
     }
     if let Some(max_requests) = max_requests {
+        if max_requests <= 0 {
+            return Err(AppError::RateLimitedWithRetry {
+                message: "下游密钥请求额度已用完".into(),
+                retry_after_secs: 60,
+            });
+        }
         if used_requests.unwrap_or(0) + increment > max_requests {
-            return Err(AppError::RateLimited);
+            return Err(AppError::RateLimitedWithRetry {
+                message: "下游密钥请求额度已用完".into(),
+                retry_after_secs: 60,
+            });
         }
     }
     Ok(())