diff --git a/scripts/eed_web_opencode.py b/scripts/eed_web_opencode.py
index fa0af7f..4757abb 100644
--- a/scripts/eed_web_opencode.py
+++ b/scripts/eed_web_opencode.py
@@ -2932,11 +2932,12 @@ class Handler(http.server.BaseHTTPRequestHandler):
                "--tools", "Read,WebSearch,Bash",
                "--output-format", "stream-json",
                "--system-prompt", EED_SYS]
-        if sid in WB_SESS:
-            return self._stream_cmd(cmd + ["--resume", sid, "-p", message], token)
-        # 全新会话：把之前的对话历史带过去（跨大脑共享记忆），再开 codebuddy 场
+        # 每次都用前端最新的完整历史当权威上下文（DeepSeek/WB 切换后也不丢新增内容），
+        # codebuddy 会话文件只用来给模型"参考之前自己说过什么"。
         if history:
             message = build_prompt(history, message)
+        if sid in WB_SESS:
+            return self._stream_cmd(cmd + ["--resume", sid, "-p", message], token)
         acc = self._stream_cmd(cmd + ["--session-id", sid, "-p", message], token)
         WB_SESS[sid] = {"ts": time.time()}
         _save_wb_sess()