diff --git a/src/renderer/components/input-area.ts b/src/renderer/components/input-area.ts
index f67d20e..632a3d9 100644
--- a/src/renderer/components/input-area.ts
+++ b/src/renderer/components/input-area.ts
@@ -988,7 +988,8 @@ function buildHistoryMessages(msgs: ChatMessage[], maxCount = 20): OllamaMessage
   const result: OllamaMessage[] = [];
 
   for (const msg of msgs) {
-    if (msg.role !== 'user' && msg.role !== 'assistant' && msg.role !== 'system') continue;
+    // 只注入 assistant 和 system 消息（用户消息仅当前发送的一条，由 runAgentLoop userContent 单独传入）
+    if (msg.role !== 'assistant' && msg.role !== 'system') continue;
     if (result.length >= maxCount) break;
 
     let content = msg.content || '';
@@ -999,19 +1000,7 @@ function buildHistoryMessages(msgs: ChatMessage[], maxCount = 20): OllamaMessage
       continue;
     }
 
-    if (msg.role === 'user') {
-      // 用户消息：注入文件内容
-      if (msg._fileContents?.length) {
-        const fileParts = buildFileContentParts(msg._fileContents);
-        content = content ? content + '\n\n---\n' + fileParts.join('\n\n---\n') : fileParts.join('\n\n---\n');
-      }
-      result.push({
-        role: 'user',
-        content,
-        ...(msg.images?.length && { images: msg.images }),
-        ...((msg as any)._videoFrames?.length && { images: [...(msg.images || []), ...(msg as any)._videoFrames.map((f: any) => f.base64)] }),
-      });
-    } else if (msg.role === 'assistant') {
+    if (msg.role === 'assistant') {
       // 构建 assistant 消息
       const assistantMsg: OllamaMessage = {
         role: 'assistant',
diff --git a/src/renderer/services/agent-engine.ts b/src/renderer/services/agent-engine.ts
index a86f896..3609b04 100644
--- a/src/renderer/services/agent-engine.ts
+++ b/src/renderer/services/agent-engine.ts
@@ -332,10 +332,12 @@ function formatToolResultForModel(toolName: string, result: ToolResult): string
     }
 
     case 'memory': {
+      // 仅处理去重文字信号（触发 handleObserving 的⛔终止），
+      // 正常结果交给 default 分支保留全部字段（entries/total/results等）
       if ((result as any).duplicate) {
         return `⚠️ 重复添加: ${(result as any).message || '相同内容已存在'}\n✅ 记忆操作已全部完成，不要再调用 memory 工具，直接输出最终回答。`;
       }
-      return JSON.stringify({ success: true, action: result.action, type: (result as any).type, content: (result as any).content });
+      // fall through to default
     }
 
     default: {