From f719546b12d32d68c33b89cc0e9b6bdd16820539 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=E7=BB=9D=E5=B0=98?= <237809796@qq.com>
Date: Sun, 2 Aug 2026 03:11:44 +0800
Subject: [PATCH] =?UTF-8?q?=E4=BC=98=E5=8C=96:=20=E5=89=8D=E7=AB=AF?=
 =?UTF-8?q?=E8=B5=B0=E6=9F=A5=20P1(MessageList/MessageItem=20=E4=B8=A4?=
 =?UTF-8?q?=E5=A5=97=E6=B8=B2=E6=9F=93=E6=94=B6=E6=95=9B)?=
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MessageItem 删 AI/system/error 死分支(301→175 行,仅 user 角色)+ 删悬空 regenerate/retry emits + 清孤立 props/isLastAi;MessageList 挂载清理。消除两套 AI 消息渲染并存(死代码+职责混乱)。
---
 src/components/ai/MessageItem.vue | 149 +++---------------------------
 src/components/ai/MessageList.vue |   7 +-
 2 files changed, 12 insertions(+), 144 deletions(-)

diff --git a/src/components/ai/MessageItem.vue b/src/components/ai/MessageItem.vue
index f854fbd..b9cbd28 100644
--- a/src/components/ai/MessageItem.vue
+++ b/src/components/ai/MessageItem.vue
@@ -1,43 +1,26 @@
 <script setup lang="ts">
-//! 单条消息渲染 — 从 MessageList.vue 提取,降低 God 文件复杂度
+//! 单条「用户」消息渲染 — 从 MessageList.vue 提取,降低 God 文件复杂度
 //!
-//! 职责:按 role(user/assistant/system)渲染单条消息气泡,
-//! 含用户消息的 Mention chip + 图片、助理消息的流式分块/完成态、
-//! 系统消息的压缩摘要。不涉滚动/折叠段/工具卡片等聚合逻辑。
+//! 职责(单一,仅 user 角色):渲染用户消息气泡,
+//! 含 Mention chip + 图片附件。
+//!
+//! 设计说明:assistant / system / error 三角色由 MessageList 内联渲染
+//! (含流式分块、工具卡片、token 用量、错误重试、压缩摘要置顶等聚合逻辑),
+//! 本组件专注 user,不做 AI 消息渲染,避免两套渲染入口并存导致的死代码与职责混乱。
 
 import { useI18n } from 'vue-i18n'
-import { useMarkdown } from '../../composables/useMarkdown'
 import type { AiMessage, ContentPart, MentionSpan } from '../../api/types'
 
 const { t } = useI18n()
-const { renderMd } = useMarkdown()
 
 defineProps<{
   msg: AiMessage
-  /** 是否为末条 assistant 消息(流式分块渲染判定) */
-  isLastAi: boolean
-  /** 是否为末条 user 消息(编辑按钮显示) */
-  isLastUser: boolean
-  /** 当前正在编辑的消息 id(隐藏编辑按钮) */
-  editingMsgId?: string | null
-  /** 流式渲染分块(末条 assistant 当前流式内容的分块结果) */
-  streamingBlocks?: { html: string; key: string }[]
-  /** 是否正在生成(控制光标闪烁) */
-  isViewingGenerating?: boolean
 }>()
 
 const emit = defineEmits<{
-  (e: 'start-edit', msg: AiMessage): void
   (e: 'copy', msg: AiMessage): void
-  (e: 'regenerate', msg: AiMessage): void
-  (e: 'retry', msg: AiMessage): void
 }>()
 
-/// 完成/历史消息用 renderMd(整段 string)
-function renderContent(msg: AiMessage): string {
-  return renderMd(msg.content)
-}
-
 // ── Input Augmentation: 按 mention 区间切段 ──
 type UserContentSegment =
   | { type: 'text'; text: string }
@@ -97,14 +80,8 @@ function imgAlt(img: ImageContentPart): string {
     :class="'ai-msg--' + msg.role"
     :data-msg-id="msg.id"
   >
-    <!-- 系统消息:压缩摘要 -->
-    <div v-if="msg.role === 'system'" class="ai-msg-system">
-      <span class="ai-msg-system-label">{{ t('aiChat.compressedSummaryLabel') }}</span>
-      <div class="ai-msg-system-summary ai-md" v-html="renderContent(msg)"></div>
-    </div>
-
-    <!-- 用户消息 -->
-    <div v-else-if="msg.role === 'user'" class="ai-msg-user">
+    <!-- 用户消息(本组件唯一渲染角色;assistant/system/error 由 MessageList 内联渲染) -->
+    <div class="ai-msg-user">
       <div class="ai-msg-avatar ai-msg-avatar--user">
         <svg width="11" height="11" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2"><path d="M20 21v-2a4 4 0 00-4-4H8a4 4 0 00-4 4v2"/><circle cx="12" cy="7" r="4"/></svg>
       </div>
@@ -123,50 +100,6 @@ function imgAlt(img: ImageContentPart): string {
         </button>
       </div>
     </div>
-
-    <!-- 助理消息 -->
-    <div v-else-if="msg.role === 'assistant'" class="ai-msg-ai">
-      <div class="ai-msg-avatar ai-msg-avatar--ai">
-        <svg width="11" height="11" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2"><path d="M12 2a7 7 0 014 12.74V17a1 1 0 01-1 1H9a1 1 0 01-1-1v-2.26A7 7 0 0112 2z"/><line x1="9" y1="21" x2="15" y2="21"/></svg>
-      </div>
-      <div class="ai-msg-bubble ai-msg-bubble--ai ai-md">
-        <!-- 流式分块渲染(末条 assistant 生成中) -->
-        <template v-if="isLastAi && streamingBlocks && streamingBlocks.length">
-          <span v-for="(block, _bi) in streamingBlocks" :key="block.key" v-html="block.html"></span>
-          <span v-if="isViewingGenerating" class="ai-cursor-blink">&#x258A;</span>
-        </template>
-        <!-- 完成/历史消息:整段 Markdown 渲染 -->
-        <template v-else>
-          <span v-html="renderContent(msg)"></span>
-        </template>
-        <!-- Token 用量 -->
-        <span v-if="msg.model" class="ai-msg-model-badge" :title="'Model: ' + msg.model">
-          {{ msg.model }}
-        </span>
-      </div>
-      <!-- 操作按钮:复制/重新生成/编辑 -->
-      <div class="ai-msg-actions">
-        <button class="ai-copy-btn" :title="t('aiChat.copyMsg')" @click.stop="emit('copy', msg)">
-          <svg width="12" height="12" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2"><rect x="9" y="9" width="13" height="13" rx="2" ry="2"/><path d="M5 15H4a2 2 0 01-2-2V4a2 2 0 012-2h9a2 2 0 012 2v1"/></svg>
-        </button>
-        <button v-if="isLastAi" class="ai-regen-btn" :title="t('aiChat.regenerate')" @click.stop="emit('regenerate', msg)">
-          <svg width="12" height="12" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2"><polyline points="1 4 1 10 7 10"/><path d="M3.51 15a9 9 0 102.13-9.36L1 10"/></svg>
-        </button>
-      </div>
-    </div>
-
-    <!-- 错误消息 -->
-    <div v-else-if="msg.isError" class="ai-msg-ai ai-msg--error">
-      <div class="ai-msg-avatar ai-msg-avatar--ai">
-        <svg width="11" height="11" viewBox="0 0 24 24" fill="none" stroke="var(--df-danger)" stroke-width="2"><circle cx="12" cy="12" r="10"/><line x1="15" y1="9" x2="9" y2="15"/><line x1="9" y1="9" x2="15" y2="15"/></svg>
-      </div>
-      <div class="ai-msg-bubble ai-msg-bubble--ai ai-msg-bubble--error">
-        <span>{{ msg.content }}</span>
-        <button class="ai-retry-btn" :title="t('aiChat.retry')" @click.stop="emit('retry', msg)">
-          <svg width="12" height="12" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2"><polyline points="1 4 1 10 7 10"/><path d="M3.51 15a9 9 0 102.13-9.36L1 10"/></svg>
-        </button>
-      </div>
-    </div>
   </div>
 </template>
 
@@ -178,12 +111,6 @@ function imgAlt(img: ImageContentPart): string {
   align-items: flex-start;
   flex-direction: row-reverse;
 }
-/* AI 消息:头像在左 */
-.ai-msg-ai {
-  display: flex;
-  gap: 8px;
-  align-items: flex-start;
-}
 /* 头像通用 */
 .ai-msg-avatar {
   width: 22px;
@@ -198,10 +125,6 @@ function imgAlt(img: ImageContentPart): string {
   background: var(--df-info-bg, rgba(100,181,246,0.15));
   color: var(--df-info, #64b5f6);
 }
-.ai-msg-avatar--ai {
-  background: var(--df-accent-bg, rgba(108,99,255,0.15));
-  color: var(--df-accent, #6c63ff);
-}
 /* 气泡通用 */
 .ai-msg-bubble {
   border-radius: 10px;
@@ -213,13 +136,6 @@ function imgAlt(img: ImageContentPart): string {
   background: var(--df-info-bg, rgba(100,181,246,0.1));
   color: var(--df-text);
 }
-.ai-msg-bubble--ai {
-  background: var(--df-bg-secondary, #1f1f1f);
-  color: var(--df-text);
-}
-.ai-msg-bubble--error {
-  border: 1px solid var(--df-danger, #f44336);
-}
 /* chip */
 .ai-msg-chip {
   display: inline-block;
@@ -242,7 +158,7 @@ function imgAlt(img: ImageContentPart): string {
   max-height: 200px;
   border-radius: 6px;
 }
-/* 复制按钮 */
+/* 复制按钮(hover 显示) */
 .ai-copy-btn {
   opacity: 0;
   transition: opacity 0.15s;
@@ -252,50 +168,7 @@ function imgAlt(img: ImageContentPart): string {
   padding: 2px;
   color: var(--df-text-dim);
 }
-.ai-msg-user:hover .ai-copy-btn,
-.ai-msg-ai:hover .ai-copy-btn {
+.ai-msg-user:hover .ai-copy-btn {
   opacity: 1;
 }
-/* 操作按钮区 */
-.ai-msg-actions {
-  display: flex;
-  gap: 4px;
-  margin-top: 4px;
-}
-.ai-regen-btn {
-  background: none;
-  border: none;
-  cursor: pointer;
-  padding: 2px;
-  color: var(--df-text-dim);
-}
-.ai-regen-btn:hover {
-  color: var(--df-text);
-}
-/* model badge */
-.ai-msg-model-badge {
-  font-size: 10px;
-  color: var(--df-text-dim);
-  margin-left: 4px;
-}
-/* 光标 */
-.ai-cursor-blink {
-  animation: blink 1s step-end infinite;
-  color: var(--df-accent);
-}
-@keyframes blink {
-  50% { opacity: 0; }
-}
-/* 系统消息 */
-.ai-msg-system {
-  padding: 8px 12px;
-  border-left: 3px solid var(--df-accent);
-  background: var(--df-bg-secondary);
-  border-radius: 4px;
-}
-.ai-msg-system-label {
-  font-size: 11px;
-  color: var(--df-text-dim);
-  margin-bottom: 4px;
-}
 </style>
diff --git a/src/components/ai/MessageList.vue b/src/components/ai/MessageList.vue
index 88864f6..72565c8 100644
--- a/src/components/ai/MessageList.vue
+++ b/src/components/ai/MessageList.vue
@@ -678,16 +678,11 @@ defineExpose({
         <span class="ai-msg-system-label">{{ $t('aiChat.compressedSummaryLabel') }}</span>
         <div class="ai-msg-system-summary ai-md" v-html="renderMd(item.msg.content)"></div>
       </div>
-      <!-- 用户消息(提取至 MessageItem.vue) -->
+      <!-- 用户消息(提取至 MessageItem.vue,仅 user 角色;assistant/system 由本组件内联渲染) -->
       <MessageItem
         v-else-if="item.msg.role === 'user'"
         :msg="item.msg"
-        :is-last-ai="isLastAi(item.msg)"
-        :is-last-user="isLastUser(item.msg)"
-        :editing-msg-id="editingMsgId"
-        :is-viewing-generating="isViewingGenerating"
         @copy="copyMsgContent"
-        @start-edit="(m) => emit('start-edit', m)"
       />
 
       <!-- AI 消息 -->