fix(consultation): decouple reply metadata from prompt

frontend/src/lib/agent-reply.ts

@@ -1,5 +1,7 @@
 export type ReplyTheme = "career" | "marriage" | "wealth" | "timing" | "general";
 
+import type { ConsultationReplyMetadata } from "./consultation-reply-metadata.ts";
+
 const fallbackSuggestions: Record<ReplyTheme, readonly [string, string, string]> = {
   career: ["我更适合怎样的职业路径？", "未来一年事业上要避开什么？", "我该如何发挥自己的优势？"],
   marriage: ["我在关系里容易重复什么模式？", "怎样的伴侣更适合我？", "未来一年关系上要注意什么？"],
@@ -46,12 +48,12 @@ function stripAgentReplyMetadata(value: string) {
   return { text, suggestions, title };
 }
 
-export function parseAgentReply(value: string, theme: ReplyTheme) {
+export function parseAgentReply(value: string, theme: ReplyTheme, metadata?: ConsultationReplyMetadata) {
   const parsed = stripAgentReplyMetadata(value);
   return {
     text: parsed.text,
-    suggestions: parsed.suggestions.length === 3 ? parsed.suggestions : [...fallbackSuggestions[theme]],
-    title: parsed.title,
+    suggestions: metadata?.suggestions ?? (parsed.suggestions.length === 3 ? parsed.suggestions : [...fallbackSuggestions[theme]]),
+    title: metadata?.title ?? parsed.title,
   };
 }