feat(markdown): 只读内容支持 Markdown 渲染

- 新增 MarkdownRenderer.vue 组件，基于 marked 解析 GFM
- 学习残片/报告历史列表：纯文本 {{ }} 替换为 MarkdownRenderer
- ReviewDetail.vue content-body：p 标签逐行渲染替换为 MarkdownRenderer
- 结束会话总结框：增加「编辑/预览」切换，预览模式实时渲染 markdown
- 学习预期展示也改为 MarkdownRenderer

package-lock.json

@@ -12,6 +12,7 @@
         "axios": "^1.7.7",
         "css-loader": "^7.1.2",
         "element-plus": "^2.8.7",
+        "marked": "^18.0.5",
         "mind-elixir": "^5.13.0",
         "normalize": "^0.3.1",
         "normalize.css": "^8.0.1",
@@ -2683,6 +2684,17 @@
         "@jridgewell/sourcemap-codec": "^1.5.0"
       }
     },
+    "node_modules/marked": {
+      "version": "18.0.5",
+      "resolved": "https://registry.npmmirror.com/marked/-/marked-18.0.5.tgz",
+      "integrity": "sha512-S6GcvALHg6K4ohtu4E7x0a1AqhAjp6cV8KhLSyN9qVapnzJkusVBxZRcIU9AeYsbe6P1hKDusSbEOzGyyuce6w==",
+      "bin": {
+        "marked": "bin/marked.js"
+      },
+      "engines": {
+        "node": ">= 20"
+      }
+    },
     "node_modules/memoize-one": {
       "version": "6.0.0",
       "resolved": "https://registry.npmmirror.com/memoize-one/-/memoize-one-6.0.0.tgz",
@@ -6453,6 +6465,11 @@
         "@jridgewell/sourcemap-codec": "^1.5.0"
       }
     },
+    "marked": {
+      "version": "18.0.5",
+      "resolved": "https://registry.npmmirror.com/marked/-/marked-18.0.5.tgz",
+      "integrity": "sha512-S6GcvALHg6K4ohtu4E7x0a1AqhAjp6cV8KhLSyN9qVapnzJkusVBxZRcIU9AeYsbe6P1hKDusSbEOzGyyuce6w=="
+    },
     "memoize-one": {
       "version": "6.0.0",
       "resolved": "https://registry.npmmirror.com/memoize-one/-/memoize-one-6.0.0.tgz",

package.json

@@ -21,6 +21,7 @@
     "axios": "^1.7.7",
     "css-loader": "^7.1.2",
     "element-plus": "^2.8.7",
+    "marked": "^18.0.5",
     "mind-elixir": "^5.13.0",
     "normalize": "^0.3.1",
     "normalize.css": "^8.0.1",

src/components/MarkdownRenderer.vue

@@ -0,0 +1,133 @@
+<script setup lang="ts">
+import { computed } from "vue";
+import { marked } from "marked";
+
+const props = withDefaults(defineProps<{
+  content: string;
+}>(), {
+  content: "",
+});
+
+const rendered = computed(() => {
+  if (!props.content) return "";
+  return marked.parse(props.content, { breaks: true, gfm: true });
+});
+</script>
+
+<template>
+  <div class="markdown-body" v-html="rendered"></div>
+</template>
+
+<style scoped>
+.markdown-body {
+  line-height: 1.8;
+  color: #333;
+  word-break: break-word;
+}
+
+.markdown-body :deep(h1),
+.markdown-body :deep(h2),
+.markdown-body :deep(h3),
+.markdown-body :deep(h4) {
+  margin: 0.75em 0 0.5em;
+  color: var(--green-900, #1b5e20);
+  font-weight: 600;
+}
+
+.markdown-body :deep(h1) { font-size: 1.4em; }
+.markdown-body :deep(h2) { font-size: 1.25em; }
+.markdown-body :deep(h3) { font-size: 1.1em; }
+
+.markdown-body :deep(p) {
+  margin: 0.4em 0;
+  line-height: 1.8;
+}
+
+.markdown-body :deep(ul),
+.markdown-body :deep(ol) {
+  margin: 0.4em 0;
+  padding-left: 1.5em;
+}
+
+.markdown-body :deep(li) {
+  margin: 0.2em 0;
+  line-height: 1.7;
+}
+
+.markdown-body :deep(code) {
+  background: #f0f4f0;
+  padding: 0.15em 0.4em;
+  border-radius: 3px;
+  font-size: 0.9em;
+  color: #c62828;
+}
+
+.markdown-body :deep(pre) {
+  background: #f5f7f5;
+  padding: 12px 16px;
+  border-radius: 6px;
+  overflow-x: auto;
+  border: 1px solid #e0e8e0;
+  margin: 0.6em 0;
+}
+
+.markdown-body :deep(pre code) {
+  background: none;
+  padding: 0;
+  color: #333;
+  font-size: 0.85em;
+}
+
+.markdown-body :deep(blockquote) {
+  margin: 0.5em 0;
+  padding: 0.5em 1em;
+  border-left: 3px solid var(--green-600, #2f8f68);
+  background: #f1f8e9;
+  color: #555;
+}
+
+.markdown-body :deep(a) {
+  color: var(--green-600, #2f8f68);
+  text-decoration: underline;
+}
+
+.markdown-body :deep(a:hover) {
+  color: var(--green-900, #1b5e20);
+}
+
+.markdown-body :deep(strong) {
+  font-weight: 600;
+  color: #222;
+}
+
+.markdown-body :deep(hr) {
+  border: none;
+  border-top: 1px solid #e0e8e0;
+  margin: 1em 0;
+}
+
+.markdown-body :deep(table) {
+  border-collapse: collapse;
+  width: 100%;
+  margin: 0.6em 0;
+  font-size: 0.9em;
+}
+
+.markdown-body :deep(th),
+.markdown-body :deep(td) {
+  border: 1px solid #d0d8d0;
+  padding: 6px 10px;
+  text-align: left;
+}
+
+.markdown-body :deep(th) {
+  background: #e8f5e9;
+  font-weight: 600;
+}
+
+.markdown-body :deep(img) {
+  max-width: 100%;
+  border-radius: 4px;
+  margin: 0.5em 0;
+}
+</style>

src/components/ReviewDetail.vue

@@ -13,6 +13,7 @@ import {
 import { getSessionDetail } from "@/api/studySessions";
 import { updateFragments } from "@/api/reportFragments";
 import { ElMessage } from "element-plus";
+import MarkdownRenderer from "@/components/MarkdownRenderer.vue";
 
 const route = useRoute();
 const router = useRouter();
@@ -301,9 +302,7 @@ watch(
       <!-- 只读模式 -->
       <template v-else>
         <div class="content-body" v-if="content">
-          <p v-for="(line, idx) in content.split('\n')" :key="idx">
-            {{ line || " " }}
-          </p>
+          <MarkdownRenderer :content="content" />
         </div>
         <div v-else class="empty-content">暂无内容</div>
       </template>

src/components/StartTask.vue

@@ -13,6 +13,7 @@ import { useStudyFragment } from "@/components/composables/fragment";
 import { getFragmentsBySession, updateFragments } from "@/api/reportFragments";
 import { getExpectation, getReportDraft, getTaskFragments, getTaskReports, upsertExpectation } from "@/api/studySessions";
 import router from "@/router";
+import MarkdownRenderer from "@/components/MarkdownRenderer.vue";
 
 const {
   fragmentsDialogVisible,
@@ -24,6 +25,7 @@ const {
 
 const summaryDialogVisible = ref(false);
 const summaryContent = ref("");
+const summaryPreview = ref(false);
 const summaryLoading = ref(false);
 const summaryLoadingSeconds = ref(0);
 let summaryLoadingTimer: ReturnType<typeof setInterval> | null = null;
@@ -666,7 +668,7 @@ onUnmounted(() => {
             <div v-loading="loadingHistory" class="history-list">
               <div v-for="item in historyFragments" :key="item.id" class="history-item">
                 <span class="session-tag">{{ item.sessionNum }}</span>
-                <span class="history-content">{{ item.content }}</span>
+                <MarkdownRenderer :content="item.content" />
               </div>
               <el-empty v-if="!loadingHistory && historyFragments.length === 0" description="暂未找到匹配的残片" :image-size="48"></el-empty>
             </div>
@@ -676,7 +678,7 @@ onUnmounted(() => {
             <div v-loading="loadingHistory" class="history-list">
               <div v-for="item in historyReports" :key="item.id" class="history-item report-item">
                 <span class="session-tag">{{ item.sessionNum }}</span>
-                <p class="history-content">{{ item.content }}</p>
+                <MarkdownRenderer :content="item.content" />
               </div>
               <el-empty v-if="!loadingHistory && historyReports.length === 0" description="暂未找到匹配的报告" :image-size="48" />
             </div>
@@ -721,21 +723,39 @@ onUnmounted(() => {
     </template>
   </el-dialog>
 
-  <el-dialog v-model="summaryDialogVisible" title="结束会话总结" width="560px">
+  <el-dialog v-model="summaryDialogVisible" title="结束会话总结" width="640px">
     <div v-if="expectationSaved" class="summary-expectation">
       <span class="expectation-label">本次预期</span>
-      <span>{{ expectationSaved }}</span>
+      <MarkdownRenderer :content="expectationSaved" />
     </div>
     <p v-if="summaryLoading" class="ai-waiting">
       AI 正在聚合残片生成草稿，已等待 {{ summaryLoadingSeconds }} 秒…
     </p>
-    <el-input
-      v-loading="summaryLoading"
-      type="textarea"
-      v-model="summaryContent"
-      placeholder="总结本次学到的内容（已有残片时自动生成草稿，可修改）"
-      :rows="8"
-    />
+    <div class="summary-editor">
+      <div class="summary-toolbar">
+        <el-button
+          size="small"
+          :type="summaryPreview ? '' : 'primary'"
+          @click="summaryPreview = false"
+        >编辑</el-button>
+        <el-button
+          size="small"
+          :type="summaryPreview ? 'primary' : ''"
+          @click="summaryPreview = true"
+        >预览</el-button>
+      </div>
+      <el-input
+        v-if="!summaryPreview"
+        v-loading="summaryLoading"
+        type="textarea"
+        v-model="summaryContent"
+        placeholder="总结本次学到的内容（已有残片时自动生成草稿，可修改）"
+        :rows="8"
+      />
+      <div v-else class="summary-preview">
+        <MarkdownRenderer :content="summaryContent" />
+      </div>
+    </div>
     <template #footer>
       <el-button @click="closeSummaryDialog">取消</el-button>
       <el-button type="success" @click="endTimer(summaryContent)">确认结束</el-button>
@@ -819,6 +839,33 @@ onUnmounted(() => {
   color: var(--text-secondary);
 }
 
+.summary-editor {
+  border: 1px solid #e0e8e0;
+  border-radius: 6px;
+  overflow: hidden;
+}
+
+.summary-toolbar {
+  display: flex;
+  gap: 0;
+  border-bottom: 1px solid #e0e8e0;
+  background: #f9fbf9;
+  padding: 4px;
+}
+
+.summary-toolbar .el-button {
+  border-radius: 4px;
+  border: none;
+}
+
+.summary-preview {
+  padding: 12px 16px;
+  min-height: 200px;
+  max-height: 360px;
+  overflow-y: auto;
+  background: #fff;
+}
+
 .status-text {
   font-size: 14px;
   color: var(--text-secondary);