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Date: Sun, 11 Oct 2026 07:38:04 +0800
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AiChatEvent 补 truncated_by_max_tokens, 与前端提示条消费配套
---
 src-tauri/src/commands/ai/mod.rs | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/src-tauri/src/commands/ai/mod.rs b/src-tauri/src/commands/ai/mod.rs
index 2c83c41..2eccb20 100644
--- a/src-tauri/src/commands/ai/mod.rs
+++ b/src-tauri/src/commands/ai/mod.rs
@@ -198,6 +198,13 @@ pub enum AiChatEvent {
         /// (provider 未报,前端 MessageList 据此标「估算」),false=真实值。仅影响展示,
         /// 不参与 TokenAccumulator/save 累加路径。
         is_estimated: bool,
+        /// 看板 953:最终收敛回复是否因 provider max_tokens 上限被截断(finish_reason=length)。
+        /// true=正常收敛路径文本被腰斩,前端主对话末条 assistant 气泡渲染截断提示条 + 继续输出;
+        /// false=完整。仅 agentic loop 正常收敛出口可传 true,停止/错误/保文/达轮次上限等
+        /// 退出点及零 token 收敛信号恒 false(截断语义与 incomplete 正交,不冒充不完整)。
+        /// #[serde(default)]:旧事件缺字段时前端按 false 兜底,向后兼容。
+        #[serde(default)]
+        truncated_by_max_tokens: bool,
         /// 不完整标记(可选):Some(true)=网络中断保文,None 或 Some(false)=完整回复
         incomplete: Option<bool>,
         /// 不完整原因(与 incomplete 配合):Some("max_rounds")=达最大轮次自动收尾,