fix: don't use content field of v2 message

Author: pmh-only

src/ChatEventHandler.ts

@@ -190,7 +190,14 @@ export class ChatEventHandler {
 
   private async initializeResponseMessage() {
     this.alreadySentMessages[0] = await this.message.reply({
-      content: `> ${ChatEventHandler.DISCORD_LOADING_EMOJI_PLACEHOLDER} 생각중...`,
+      components: [
+        new TextDisplayBuilder()
+          .setContent(
+            `> ${ChatEventHandler.DISCORD_LOADING_EMOJI_PLACEHOLDER} 생각중...`
+          )
+          .toJSON()
+      ],
+      flags: [MessageFlags.IsComponentsV2],
       allowedMentions: {
         repliedUser: false
       }
@@ -231,7 +238,9 @@ export class ChatEventHandler {
             ? '---\n' +
               `> **${streamData.metadata.model}** ${streamData.metadata.isWebSearchEnabled ? '(:globe_with_meridians: 검색 활성화됨)' : ''}\n` +
               `> 입력: ${streamData.metadata.inputToken} 토큰 (${cost.input.toFixed(4)}$)\n` +
-              `> 캐시: ${streamData.metadata.inputCachedToken} 토큰 (${cost.cachedInput.toFixed(4)}$)\n` +
+              (streamData.metadata.inputCachedToken > 0
+                ? `> 캐시: ${streamData.metadata.inputCachedToken} 토큰 (${cost.cachedInput.toFixed(4)}$)\n`
+                : '') +
               (streamData.metadata.reasoningToken > 0
                 ? `> 생각: ${streamData.metadata.reasoningToken} 토큰 (${cost.reasoning.toFixed(4)}$)\n`
                 : '') +
@@ -312,6 +321,7 @@ export class ChatEventHandler {
     if (isSame) return
 
     const components = newContents
+      .filter((content) => content.length > 0)
       .map((content) => [
         new TextDisplayBuilder().setContent(content).toJSON(),
         new SeparatorBuilder()

src/Models.ts

@@ -12,6 +12,7 @@ export interface Model {
   description: string
   emoji: string
   tools: string[]
+  toolRequired?: boolean
   reasoningEffort?: ReasoningEffort
   system?: string
   cost: {
@@ -28,6 +29,7 @@ export const MODELS: Record<string, Model> = {
     label: 'o3 (high)',
     description: '생각하는데 더 많은 시간을 투자하여 전문적인 주제에 적합',
     emoji: '🤔',
+    system: 'use [name](url) syntax for citing webpage',
     tools: ['web_search_preview'],
     cost: {
       input: 2,
@@ -44,6 +46,7 @@ export const MODELS: Record<string, Model> = {
     emoji: '🔍',
     tools: ['web_search_preview'],
     reasoningEffort: 'medium',
+    system: 'use [name](url) syntax for citing webpage',
     cost: {
       input: 1.1,
       cached_input: 0.28,
@@ -57,7 +60,10 @@ export const MODELS: Record<string, Model> = {
     description: '웹 검색을 최대한 활용하여 최신 주제에 적합',
     emoji: '🌐',
     tools: ['web_search_preview'],
-    system: 'utilize web search on every response',
+    toolRequired: true,
+    system:
+      'utilize web search on every response\n' +
+      'use [name](url) syntax for citing webpage',
     cost: {
       input: 2,
       cached_input: 0.5,

src/OpenAIClient.ts

@@ -22,7 +22,9 @@ export class OpenAIClient {
 
   private static readonly OPENAI_DEFAULT_PROMPT =
     process.env.OPENAI_DEFAULT_PROMPT ??
-    'respond in discord-flavored markdown format. (for example, you CAN NOT use table and 4~6 level heading but you can use 1~3 level heading with #)\n' +
+    'respond in discord-flavored markdown format.\n' +
+      'you CAN NOT use 4~6 level heading but you can use 1~3 level heading with #\n' +
+      'you CAN NOT use table syntax for markdown\n' +
       'also you CAN NOT use bold, italic, underline etc in code block and code span\n' +
       'DO NOT use latex syntax, use unicode characters for math equation. use code block(```...```) and code span(`...`)\n' +
       'DO NOT append spaces before code block start and end\n' +
@@ -47,7 +49,6 @@ export class OpenAIClient {
       model: model.id,
       tools: model.tools.map((v) => ({ type: v })) as Tool[],
 
-      tool_choice: model.tools.length > 0 ? 'required' : undefined,
       reasoning:
         model.reasoningEffort !== undefined
           ? { effort: model.reasoningEffort, summary: 'detailed' }
@@ -58,6 +59,7 @@ export class OpenAIClient {
         ...chats.map((v) => v.convertToOpenAIResponse())
       ],
 
+      tool_choice: model.toolRequired === true ? 'required' : 'auto',
       truncation: 'auto',
 
       user: userIdent.toString()