feat(llm 對話): 新增 prompt builder 與 few-shot 範例組裝,強化 Claude 對話品質

apps/api/src/llm/dialogue.service.ts

@@ -63,7 +63,7 @@ export class DialogueService {
     options: HandleMessageOptions = {},
   ): Promise<HandleMessageResult> {
     const now = options.now ?? new Date();
-    this.workingMemory.append(sessionId, { role: "user", content: userInput, timestamp: now });
+    await this.workingMemory.append(sessionId, { role: "user", content: userInput, timestamp: now });
 
     // I-6：按需生成離線事件（今天只生成一次），成為話題來源。
     await this.offlineEvent.maybeGenerate(characterId, now);
@@ -138,7 +138,7 @@ export class DialogueService {
       this.outputFilter.filter(text, forbiddenWords),
       context.character.personalityArchetype,
     );
-    this.workingMemory.append(sessionId, { role: "character", content: filteredText, timestamp: now });
+    await this.workingMemory.append(sessionId, { role: "character", content: filteredText, timestamp: now });
 
     return { text: filteredText, actions, isFastChannel, availability: effectiveAvailability, exceptionType, context };
   }