diff --git a/tests/frontend/unit/b3/bench.store.test.js b/tests/frontend/unit/b3/bench.store.test.js
index 715b65a..de61da0 100644
--- a/tests/frontend/unit/b3/bench.store.test.js
+++ b/tests/frontend/unit/b3/bench.store.test.js
@@ -164,10 +164,12 @@ describe('bench store', () => {
     });
     await store.loadSessionSources();
     expect(httpGet).toHaveBeenCalledWith('/api/sessions/sess-1/sources', undefined);
-    expect(store.sessionSourceItems).toHaveLength(2); // paper_id 去重
-    const byPaper = store.sessionSourceItems.find((s) => s.paper_id === 'PMID1');
-    expect(byPaper.count).toBe(3); // 累计出现次数
-    expect(store.sources).toHaveLength(2);
+    // 缺陷 #27：前端不再二次聚合——后端去重结果原样透出
+    expect(store.sources).toHaveLength(3);
+    expect(store.sources[0].src.paper_id).toBe('PMID1');
+    expect(store.sources[0].label).toBe(2); // 后端给的第一条 count
+    expect(store.sources[1].label).toBe(1);
+    expect(store.sources[2].label).toBe(1);
 
     // 切回 current：仍为 null（无 B2）
     store.setSourceScope('current');
diff --git a/ui/src/components/chat/ChatPanel.vue b/ui/src/components/chat/ChatPanel.vue
index b9ba936..823a0e3 100644
--- a/ui/src/components/chat/ChatPanel.vue
+++ b/ui/src/components/chat/ChatPanel.vue
@@ -54,6 +54,12 @@ const jumpToGraph = () => {
 const stop = () => chat.stop();
 const retry = () => chat.retry();
 const changeMode = (mode) => chat.setMode(mode);
+// r3-07-01：揭示动画「跳过」——MessageList 转发后落 store.skipReveal()（立即定格全文）
+const skipReveal = () => {
+  try {
+    chat.skipReveal();
+  } catch { /* chat store 未就绪（测试/降级）：静默 */ }
+};
 
 // 切换会话/发送后清空输入框无需处理（Composer 自持 draft，欢迎态切换即重置）
 </script>
@@ -94,6 +100,7 @@ const changeMode = (mode) => chat.setMode(mode);
       @retry="retry"
       @jump-graph="jumpToGraph"
       @jump-source="jumpToSource"
+      @skip-reveal="skipReveal"
     />
 
     <!-- 作曲器（FR-HEALTH-002：QA 不可用时禁用 + 降级提示，BUG-R1-04） -->
diff --git a/ui/src/components/chat/MessageList.vue b/ui/src/components/chat/MessageList.vue
index 6541e16..b481dd7 100644
--- a/ui/src/components/chat/MessageList.vue
+++ b/ui/src/components/chat/MessageList.vue
@@ -14,7 +14,7 @@ const props = defineProps({
   scrollSeq: { type: Number, default: 0 }, // chat store 的滚动请求序号
 });
 
-const emit = defineEmits(['retry', 'jump-graph', 'jump-source']);
+const emit = defineEmits(['retry', 'jump-graph', 'jump-source', 'skip-reveal']);
 
 const el = ref(null);
 const stickToBottom = ref(true);
@@ -65,6 +65,7 @@ onBeforeUnmount(() => {});
           @retry="emit('retry')"
           @jump-graph="emit('jump-graph')"
           @jump-source="(payload) => emit('jump-source', payload)"
+          @skip-reveal="emit('skip-reveal')"
         />
       </template>
     </div>
diff --git a/ui/src/stores/chat.js b/ui/src/stores/chat.js
index eb2faa7..489d97c 100644
--- a/ui/src/stores/chat.js
+++ b/ui/src/stores/chat.js
@@ -943,6 +943,10 @@ export const useChatStore = defineStore('chat', {
             pipe.status = 'done';
             pipe.taskStatus = 'done';
             pipe.steps.forEach((st) => { st.state = 'done'; });
+            // r3-52-02：done 后还原 generation 步默认 desc（running 时被
+            // 「生成中 x/y 节」覆盖，终态不得残留进度文案）
+            const genStep = pipe.steps.find((st) => st.phase === 'generation');
+            if (genStep) genStep.desc = DOCGEN_STEPS.find((st) => st.phase === 'generation')?.desc || genStep.desc;
             if (artifact) {
               const art = { ...artifact };
               const artId = art.artifact_id || art.id;
diff --git a/ui/tests/r3debug/docgenPoll.test.js b/ui/tests/r3debug/docgenPoll.test.js
index 621e6a1..a020f23 100644
--- a/ui/tests/r3debug/docgenPoll.test.js
+++ b/ui/tests/r3debug/docgenPoll.test.js
@@ -113,26 +113,48 @@ describe('#52 docgen 异步轮询状态机', () => {
   it('done：挂 artifact 块 + 落库 + adoptArtifact + 切文档 TAB', async () => {
     const { chat } = freshStores();
     vi.mocked(generate).mockResolvedValue({ ok: true, task_id: 'task-3', status: 'queued' });
-    vi.mocked(getTask).mockResolvedValue({
-      ok: true,
-      task: {
-        id: 'task-3', status: 'done',
-        progress: [],
-        artifact: { artifact_id: 'art-1', title: '方案', template_name: '方案计划', template_key: 'plan', has_html: true, letterhead: false, file_name: 'f.docx' },
-        error: null,
-      },
-    });
+    // r3-52-02 复现：先 running（generation desc 被「生成中 x/y 节」覆盖）→ 再 done
+    vi.mocked(getTask)
+      .mockResolvedValueOnce({
+        ok: true,
+        task: {
+          id: 'task-3', status: 'running',
+          progress: [
+            { section: 1, title: 'a', state: 'done' },
+            { section: 2, title: 'b', state: 'running' },
+          ],
+          artifact: null, error: null,
+        },
+      })
+      .mockResolvedValue({
+        ok: true,
+        task: {
+          id: 'task-3', status: 'done',
+          progress: [],
+          artifact: { artifact_id: 'art-1', title: '方案', template_name: '方案计划', template_key: 'plan', has_html: true, letterhead: false, file_name: 'f.docx' },
+          error: null,
+        },
+      });
     const p = chat.sendDocgen('写一份方案', []);
     await vi.advanceTimersByTimeAsync(0);
     await p;
+    // 第一 tick：running，desc 被进度文案覆盖
+    await vi.advanceTimersByTimeAsync(2000);
+    await vi.advanceTimersByTimeAsync(0);
+    let aMsg = chat.messages.find((m) => m.role === 'assistant' && m.kind === 'docgen');
+    expect(aMsg.blocks[0].steps.find((s) => s.phase === 'generation').desc).toContain('生成中 1/2');
+    // 第二 tick：done，desc 必须还原默认文案（r3-52-02）
     await vi.advanceTimersByTimeAsync(2000);
     await vi.advanceTimersByTimeAsync(0);
     await vi.advanceTimersByTimeAsync(0); // adoptArtifact 内部异步拉取
-    const aMsg = chat.messages.find((m) => m.role === 'assistant' && m.kind === 'docgen');
+    aMsg = chat.messages.find((m) => m.role === 'assistant' && m.kind === 'docgen');
     expect(aMsg.status).toBe('done');
     expect(aMsg.blocks.some((b) => b.type === 'artifact' && b.artifact_id === 'art-1')).toBe(true);
     expect(aMsg.blocks[0].status).toBe('done');
     expect(aMsg.blocks[0].steps.every((s) => s.state === 'done')).toBe(true);
+    const genStep = aMsg.blocks[0].steps.find((s) => s.phase === 'generation');
+    expect(genStep.desc).toBe('按大纲逐节生成正文');
+    expect(genStep.desc).not.toContain('生成中');
     // 轮询注册自清（终态后不再有定时器）
     const { useDocgenStore } = await import('../../src/stores/docgen.js');
     expect(useDocgenStore().activeArtifact?.artifact_id).toBe('art-1');
diff --git a/ui/tests/r3debug/skipReveal.test.js b/ui/tests/r3debug/skipReveal.test.js
new file mode 100644
index 0000000..60a061e
--- /dev/null
+++ b/ui/tests/r3debug/skipReveal.test.js
@@ -0,0 +1,151 @@
+// @vitest-environment jsdom
+// tests/r3debug/skipReveal.test.js —— r3-07-01「跳过」按钮事件链全链路
+// 断言：AssistantMessage skip-btn 点击 → MessageList 转发 skip-reveal →
+// ChatPanel 落 store.skipReveal() → 消息定格终态（stream 块换 text 块）。
+import { describe, it, expect, vi, beforeEach } from 'vitest';
+import { mount, flushPromises } from '@vue/test-utils';
+import { setActivePinia, createPinia } from 'pinia';
+
+// jsdom 无 scrollTo：polyfill（MessageList 挂载滚动用）
+if (typeof window !== 'undefined' && typeof window.Element !== 'undefined' && !window.Element.prototype.scrollTo) {
+  window.Element.prototype.scrollTo = vi.fn();
+}
+
+vi.mock('../../src/stores/health.js', () => ({
+  useHealthStore: vi.fn(() => ({ data: null, qaOk: true })),
+}));
+vi.mock('../../src/api/sessions.js', () => ({
+  listSessions: vi.fn(async () => []),
+  createSession: vi.fn(async () => ({ id: 's1' })),
+  getSession: vi.fn(async () => ({ id: 's1', status: 'done', meta: {}, messages: [] })),
+  updateSession: vi.fn(async (id, b) => ({ id, ...b })),
+  deleteSession: vi.fn(async () => {}),
+  createMessage: vi.fn(async () => ({ id: 'm1' })),
+  updateMessage: vi.fn(async () => ({ updated_at: new Date().toISOString() })),
+}));
+vi.mock('../../src/api/qa.js', () => ({
+  chatStream: vi.fn(async () => {}),
+  chat: vi.fn(),
+  search: vi.fn(),
+  info: vi.fn(),
+}));
+vi.mock('../../src/api/private.js', () => ({
+  askPrivate: vi.fn(async () => ({ hit: false })),
+}));
+vi.mock('../../src/api/docgen.js', () => ({
+  generate: vi.fn(),
+  getTask: vi.fn(),
+  listTasks: vi.fn(),
+  getArtifactContent: vi.fn(async () => ({ markdown: '' })),
+  getArtifactHtml: vi.fn(async () => ({ ok: true, html: '', css: '' })),
+  saveArtifactContent: vi.fn(async () => ({})),
+  editArtifact: vi.fn(async () => ({})),
+  exportArtifact: vi.fn(async () => ({})),
+  uploadLibrary: vi.fn(),
+  listLibrary: vi.fn(async () => ({ items: [] })),
+  removeLibrary: vi.fn(async () => ({ ok: true })),
+}));
+
+import ChatPanel from '../../src/components/chat/ChatPanel.vue';
+import MessageList from '../../src/components/chat/MessageList.vue';
+import AssistantMessage from '../../src/components/chat/AssistantMessage.vue';
+import { useChatStore } from '../../src/stores/chat.js';
+import { useSessionsStore } from '../../src/stores/sessions.js';
+
+/** 构造揭示中的会话态：aMsg 带 stream 块 + ctx.reveal */
+function seedRevealing(chat) {
+  const msgList = [
+    { id: 'u1', role: 'user', status: 'done', text: '问题', blocks: [{ type: 'text', html: '问题' }] },
+    {
+      id: 'a1',
+      role: 'assistant',
+      kind: 'qa',
+      status: 'streaming',
+      streamErr: null,
+      revealId: 1, // revealText 正常流程会写入；skipReveal 据此定位目标消息
+      blocks: [
+        { type: 'pipeline', status: 'running', steps: [] },
+        { type: 'stream', text: '部分内容' },
+      ],
+    },
+  ];
+  chat.sessionId = 's1';
+  chat.messages = msgList;
+  chat.sessionMsgs['s1'] = msgList;
+  const aMsg = msgList[1];
+  chat.streamCtx['s1'] = {
+    sessionId: 's1',
+    msgList,
+    aMsg,
+    controller: null,
+    completedOnce: false,
+    events: [],
+    checkpointTimer: null,
+    lastCheckpointAt: 0,
+    reveal: { text: '全文内容', aMsg },
+    abortAnn: null,
+  };
+  return aMsg;
+}
+
+async function mountPanel() {
+  const w = mount(ChatPanel, { global: { stubs: { teleport: true } } });
+  await flushPromises();
+  return w;
+}
+
+describe('r3-07-01 跳过按钮事件链', () => {
+  beforeEach(() => {
+    setActivePinia(createPinia());
+    const sessions = useSessionsStore();
+    sessions.items = [{ id: 's1', title: 't', status: 'done', created_at: '', updated_at: '' }];
+  });
+
+  it('全链路：skip-btn 点击 → MessageList 转发 → ChatPanel → store.skipReveal 定格终态', async () => {
+    const chat = useChatStore();
+    seedRevealing(chat);
+
+    const w = await mountPanel();
+    // 揭示中：skip-btn 存在
+    const skipBtn = w.find('.skip-btn');
+    expect(skipBtn.exists()).toBe(true);
+
+    await skipBtn.trigger('click');
+    await flushPromises();
+
+    // store 效果：stream 块移除、text 块定格、状态 done、reveal 清空
+    const aMsg = chat.messages[1];
+    expect(aMsg.status).toBe('done');
+    expect(aMsg.blocks.some((b) => b.type === 'stream')).toBe(false);
+    expect(aMsg.blocks.some((b) => b.type === 'text')).toBe(true);
+    expect(chat.reveal).toBeNull();
+  });
+
+  it('MessageList 层：AssistantMessage skip-reveal 事件被转发为同名 emit', async () => {
+    const chat = useChatStore();
+    seedRevealing(chat);
+    const w = mount(MessageList, {
+      props: { messages: chat.messages, busy: false, reveal: chat.reveal, scrollSeq: 0 },
+      global: { stubs: { transition: false } },
+    });
+    const am = w.findComponent(AssistantMessage);
+    expect(am.exists()).toBe(true);
+    await am.vm.$emit('skip-reveal');
+    expect(w.emitted('skip-reveal')).toBeTruthy();
+    expect(w.emitted('skip-reveal')).toHaveLength(1);
+  });
+
+  it('ChatPanel 层：MessageList skip-reveal 事件被监听（组件契约存在）', async () => {
+    const chat = useChatStore();
+    seedRevealing(chat);
+    const w = await mountPanel();
+    const ml = w.findComponent(MessageList);
+    expect(ml.exists()).toBe(true);
+    // 直接对 MessageList 发事件：ChatPanel 的 @skip-reveal 监听应落 store
+    await ml.vm.$emit('skip-reveal');
+    await flushPromises();
+    const aMsg = chat.messages[1];
+    expect(aMsg.status).toBe('done');
+    expect(aMsg.blocks.some((b) => b.type === 'text')).toBe(true);
+  });
+});