remove: 去掉今日定调摘要（prompt不再生成、前端移除高亮框、空标题卡不渲染）

src/routes/ai-analysis.tsx

@@ -46,7 +46,7 @@ function colorizeChildren(children: React.ReactNode): React.ReactNode {
   });
 }
 
-/** 按 "## " 二级标题拆分报告为多张卡片；首段（# 标题 + 定调引用块）单独一张 */
+/** 按 "## " 二级标题拆分报告为多张卡片；首段（# 标题等）若无正文则不单独成卡 */
 function splitReport(content: string): { intro: string; sections: { title: string; body: string }[] } {
   const parts = content.split(/\n(?=## )/);
   const sections = parts.slice(1).map((p) => {
@@ -55,7 +55,10 @@ function splitReport(content: string): { intro: string; sections: { title: strin
     const body = nl === -1 ? "" : p.slice(nl + 1).trim();
     return { title, body };
   });
-  return { intro: parts[0].trim(), sections };
+  const intro = parts[0].trim();
+  // intro 只剩标题（无其他内容）时置空，避免渲染一张只有大标题的空卡片
+  const introBody = intro.replace(/^#[^\n]*$/m, "").trim();
+  return { intro: introBody ? intro : "", sections };
 }
 
 function AiAnalysisPage() {
@@ -142,18 +145,6 @@ function AiAnalysisPage() {
               </CardContent>
             </Card>
 
-            {/* 今日定调摘要 */}
-            {report.summary && (
-              <div className="mb-3 sm:mb-4 rounded-lg border border-primary/30 bg-primary/5 px-3 sm:px-4 py-3">
-                <div className="flex items-start gap-2.5">
-                  <span className="shrink-0 mt-0.5 rounded bg-primary/10 px-1.5 py-0.5 text-[11px] font-semibold text-primary">
-                    今日定调
-                  </span>
-                  <p className="text-sm leading-relaxed">{report.summary}</p>
-                </div>
-              </div>
-            )}
-
             {/* 报告正文：按 ## 章节分卡片渲染 */}
             {(() => {
               const { intro, sections } = splitReport(report.content);