修复: 队列发送失败回填不丢消息+池权重revert+lang解析DRY+注释变量名修正

crates/df-storage/src/secret.rs

@@ -101,7 +101,7 @@ pub fn get_provider_secret(id: &str) -> Option<String> {
     }
 }
 
-/// 消费点用:解析 provider 真实密钥 — keyring 优先,fallback DB.api_key(兼容未迁移老库)
+/// 消费点用:解析 provider 真实密钥 — DB 优先,fallback keyring(兼容未迁移老库)
 pub fn resolve_provider_secret(record: &AiProviderRecord) -> String {
     if !record.api_key.is_empty() {
         return record.api_key.clone();