From dcd58538080e81f1ad3d5708211a609bcc1e2010 Mon Sep 17 00:00:00 2001
From: Your Name <your.email@example.com>
Date: Mon, 9 Feb 2026 11:39:55 +0800
Subject: [PATCH] =?UTF-8?q?=E5=AF=B9=E7=94=9F=E5=9B=BE=E4=BC=98=E5=8C=96?=
 =?UTF-8?q?=E6=8F=90=E7=A4=BA=E8=AF=8D=E8=A1=A5=E5=85=85=E5=8E=9F=E5=A7=8B?=
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---
 app/(chat)/api/chat/route.ts | 12 +++++++++++-
 1 file changed, 11 insertions(+), 1 deletion(-)

diff --git a/app/(chat)/api/chat/route.ts b/app/(chat)/api/chat/route.ts
index 9762ae9..34b3bf5 100644
--- a/app/(chat)/api/chat/route.ts
+++ b/app/(chat)/api/chat/route.ts
@@ -146,7 +146,17 @@ function applyOptimizedPromptToLatestUserMessage(
     const textPart = msg.parts.find(
       (part): part is { type: "text"; text: string } => part.type === "text",
     );
-    const finalPrompt = `${hiddenPromptPrefix}${prompt}`.trim();
+    const originalText = textPart?.text?.trim() || "";
+    const normalizedOriginal = hiddenPromptPrefix && originalText.startsWith(hiddenPromptPrefix)
+      ? originalText.slice(hiddenPromptPrefix.length).trim()
+      : originalText;
+    const shouldAppendOriginal =
+      normalizedOriginal &&
+      normalizedOriginal !== prompt &&
+      !prompt.includes(normalizedOriginal);
+    const finalPrompt = shouldAppendOriginal
+      ? `${hiddenPromptPrefix}${prompt}\n\n用户原始需求：${normalizedOriginal}`.trim()
+      : `${hiddenPromptPrefix}${prompt}`.trim();
 
     if (textPart) {
       textPart.text = finalPrompt;